介绍HHP352-T智能手持式压力计美国OMEGA欧米茄

e-mail:**************HH-21A,HH-22A and HH-23AHandheld Microprocessor DigitalThermometersconstantly pursuing certification of its products to the European New Approach Directives.OMEGA will add the CE mark to every appropriate device upon certification.The information contained in this document is believed to be correct but OMEGA Engineering,Inc.accepts no liability for any errors it contains,and reserves the right to alter specifications without notice.WARNING:These products are not designed for use in,and should not be used for,patient connected applications.TABLE OF CONTENTSGeneral Information (2)Specifications (2)Difference Specifications (4)Features (5)Manual Addenda (5)Unpacking and Inspection (5)Safety Information (6)Safety Precautions (6)Battery Installation/Replacement (8)Memory Backup (9)Operation with Rechargeable Battery (9)Operating Instructions (9)1.Diagnostics (9)2.Display Annunciators (11)3.Function Keys (13)Service Information (18)1.Calibration Procedure (18)2.Disassembly Instructions (19)3.Mechanical Parts Diagram (21)1MAXIMUM COMMON MODE VOLTAGE:42V peak to earth.POWER:9volt transistor battery(NEDA1604).BATTERY LIFE,CONTINUOUS:50hrs typical,carbon-zinc;100hrs typical,alkaline; 200hrs typical,lithium;15hrs typical,Ni-Cd(rechargeable).BATTERY INDICATOR:Display indicates BAT when less than10%of life remains.DISPLAY:5digit LCD,0.4"height.Polarity indication,and decimal point.Annunciators•Readout Parameter:T1,T2,T1-T2,SCAN•Record Parameter:MIN or MAX(when viewing recorded data).•Readout Scale:°F,°C•TC Type:K,J,T•Hold(when activated)•Reading Trend:up-arrow for increasing readings,down-arrow for decreasing readings.Both arrows on for stable reading.•Record MIN/MAX readings for T1,T2,and/or T1-T2;Flashing annunciator indi-cates data being collected.Steady annunciator indicates data available,but not being up-dated.KEYPAD:9momentary switches with tactile feedback select;•Power ON/OFF•Readout:T1,T2,T1-T2,or SCAN•TC type:K,J,T•Readout scale:°F/°C•Resolution:0.1°/1°•Display Hold•Record MIN/MAX•View MIN/MAX•Stop recording MIN/MAX(first keystroke),clear recorded MIN/MAX(second keystroke)POWER OFF CONFIGURATION RETENTION:Instrument retains last selected;•Readout:T1,T2,T1-T2,SCAN•TC type:K,J,T•Resolution:0.1°/1°•Scale:°F/°CDIAGNOSTICS:Display codes indicate the following conditions:•Low Battery:‘BAT’•Open Thermocouple(s):‘OPEN’•Invalid Keypad Entry:Momentary‘E-1’•Temperature Reading exceeds TC Rating:‘E-2’•Internal Hardware Fault:‘E-3’(consult factory)•LCD Test:During power-up,all segments/annunciators turned on momentarily.ELECTROMAGNETIC COMPATIBILITY:Add±0.5%of range to accuracy specific-tions for RF fields up to1volt/meter.Accuracy not specified for fields greater than1volt/meter.DIMENSIONS,WEIGHT:7.0"x2.9"x1.1".Net weight10oz.3DIFFERENCE SPECIFICATIONSMODEL HH-21A:THERMOCOUPLE INPUTS:1DISPLAY:5digit LCD,0.4"height.Polarity indication,and decimal point.Annunciators•Readout Scale:°F,°C•TC T ype:K,J,T•Hold(when activated)KEYPAD:5momentary switches with tactile feedback select;•Power ON/OFF•TC type:K,J,T•Readout scale:°F/°C•Resolution:0.1°/1°•Display HoldPOWER OFF CONFIGURATION RETENTION:Instrument retains last selected;•TC type:K,J,T•Resolution:0.1°/1°•Scale:°F/°CMODEL HH-22A:THERMOCOUPLE TYPES:K,J4FEATURES•T emperature trend indication(rising,falling,or stable)•Full range resolution of0.1degree•Work with thermocouple types K,J and T•Keypad selectable°F or°C•T wo probe inputs(for two point temperature measurements)•Calculates and displays temperature difference between the two probe inputs•Maximum and minimum temperature storage•Dust proof,splash proof,drop proof construction•Built-in tilt stand/hanger for bench use or hands free field measurements •User friendly function programming•Performs self diagnostic test and displays error readout•Retains function settings,even when turned off•Low battery and open sensor indication•Input data scan and display hold modesMANUAL ADDENDAImprovements or changes to this manual will be explained on an addendum included with the instrument.All change information should be incorporated immediately into the appropriate places in the manual.UNPACKING AND INSPECTIONEach instrument is inspected both mechanically and electrically before ship-ment.Upon receiving your instrument unpack all items from the shipping container and check for any obvious damage that may have occurred during transit.Report any damage to the shipping agent.Retain and use the origi-nal packing materials if reshipment is necessary.5SAFETY INFORMATIONSAFETY SYMBOLS AND TERMS!The symbol on the instrument denotes that the user should refer to theoperating instructions.The WARNING used in this manual explains dangers that could result inpersonal injury or death.The CAUTION used in this manual explains hazards that could damagethe instrument.SAFETY PRECAUTIONSWARNINGThese instruments are intended for use by qualified per-sonnel trained in the safe operation of electronic testingequipment.Read the instruction manual thoroughly beforeusing,to become familiar with the instrument’s operationsand capabilities.WARNINGDo not touch a temperature probe sheath when measuringexcessively high or low temperatures,or toxic substances.WARNINGDo not attempt to measure temperatures beyond the rangeof the probe being used.Probe damage or personal injurycould result from exceeding a probe’s maximum tempera-ture rating.WARNINGThe American National Safety Institute(ANSI)states that ashock hazard exists when probes or sensors are exposedto voltage levels greater than42VDC or42V peak AC.Donot use this instrument where voltages at the measure-ment surface exceed these levels.6WARNINGDo not substitute a metal part for the nylon screw in therear case. Doing so will degrade electrical isolation of the case.WARNINGThe battery is accessible through a cover on the back ofthe instrument. To avoid electrical shock hazard, discon-nect all temperature probes and sensors and turn the unitoff before removing the cover.WARNINGNever use this instrument or any probe or sensor inside a microwave oven.CAUTIONAvoid making sharp bends in probe or sensor lead wires. Bending lead wires at a sharp angle can damage the wire causing probe failure.CAUTIONWhen using both thermometer inputs, and a voltage differ-ential exists between the two measurement points, at leastone probe should be electrically insulated. If not, ground-loop current can flow through the thermocouple leads causing measurement error or instrument damage.7BATTERY INSTALLATION/REPLACEMENTA 9V battery is supplied with the instrument but not installed. Read the fol-lowing installation instructions before attempting to install or remove the bat-tery.WARNINGTurn the unit off and disconnect any input connectionsbefore replacing the battery. Put the cover back into placeon the battery compartment before resuming use of theinstrument.1.Remove the cover from the battery compartment by sliding it off inthe direction of the arrow located on the battery cover.2.Remove the old battery and wait at least 20 seconds beforeinstalling the new battery.3.Place the new battery in the battery compartment. Be sure toobserve proper polarity.4.Re-install the battery cover before resuming use of the instrument.Figure 1. Battery InstallationNOTES:•Less than 10% of battery life remains when the BAT annun-ciator turns on.•If the instrument is going to be stored for a long period of time or in a high temperature environment, remove the battery toprevent leakage damage.•After a new battery is installed, allow approximately 30 sec-onds for reading stabilization the first time the instrument isturned on.•The ON button may need to be pressed twice, the first time the unit is turned on, after battery replacement.8MADE IN THE U.S.A.MADE IN THE U.S.A.TYPE K TC NiCr-NiAlTYPE J TC Fe-CuNiTYPE T TC Cu-CuNiFigure 2. Display-Keypad Formats for Models HH-21A & HH-23AMEMORY BACKUPDuring battery replacement, the contents of user-programmed memory (data, operating modes, etc.) can be saved. Prior to removing the old battery, turn off the instrument, and connect a Model HH22A-AC battery charger in the U.S.A.. Then exchange batteries, and disconnect the battery charger. Do not leave the battery charger connected to instruments with non-recharge-able batteries.OPERATION WITH RECHARGEABLEBATTERYModel HH22A-AC provides a 9-volt Ni-Cd battery and recharger suitable for use with the unit in the U.S.A.. This battery provides 15 hours of continuous operation. This duration can be extended indefinitely by operating simultane-ously from both the battery and recharger.OPERATING INSTRUCTIONSThe following instructions make reference to keypad inputs, and display read-outs. Refer to Figure 2 to locate key switches, and identify display differences between thermometer models. Model HH-22A is similar in layout to the HH-23A, except operation is limited to K and J thermocouples.1. DIAGNOSTICSAutomatic diagnostics provide error indicators which are described below. PROBLEM:LIKEL Y CAUSE:Blank display, unit does not(1)Improper battery installation. Check power-up.battery polarity.(2)Dead battery.Low BAT Annunciator.(1)Low battery voltage, install a newbattery. If problem persists, consultfactory.Display reads momentarily.Display reads during temperature measurement.SERVICE INFORMATIONWARNINGAll service information is intended for qualified electronicmaintenance personnel only.1. CALIBRATION PROCEDURETest Equipment Required:1.Thermocouple calibrator (Omega CL521, or equivalent).2.Calibration cable for each thermocouple type handled by unit under test(U.U.T.):T ype KT ype JT ype TAmbient Conditions:Units should be calibrated at an ambient temperature of 23°C ±1°C, with rel-ative humidity less than 80%. Avoid air currents and heat sources that can disturb the thermal equilibrium of the U.U.T.Procedure:1.T urn OFF U.U.T.2.Remove rear cover. Refer to Disassembly Instructions.3.Install shorting-plug on circuit board. At the J1.Cal location (Do notremove any shorting plugs from other J1 locations.) Refer to Mechanical Parts Diagram for location (P/N CS-791).4.Replace rear cover. Reinstall battery. T urn on U.U.T.5.Connect input of U.U.T. to the thermocouple calibrator with a type Kcable. Use input T1 on Models HH-22 and HH-23.6.Set calibrator output to 32°F, type K.7.Wait for U.U.T. readout to stabilize, then press HOLD key once, and waita few seconds. U.U.T. should read 32.0°F ±0.5°F, type K.8.Set calibrator to 2500°F, type K.9.Wait for U.U.T. readout to stabilize, then press HOLD key once, and waita few seconds. U.U.T. should read 2500.0°F ±1.0°F, type K.10.Replace type K cable with T ype J.11.Set calibrator output to 32°F, type J.12.Wait for U.U.T. readout to stabilize, then press HOLD key once, and waita few seconds. U.U.T. should read 32.0°F ±0.5°F, type J.13.Set calibrator output to 1400°F, type J.14.Wait for U.U.T. readout to stabilize, then press HOLD key once, and waita few seconds. U.U.T. should read 1400.0°F ±1.0°F, type J.NOTE:On Model HH-22, go to step 21 to complete calibra-tion. On Models HH-21 and HH-23, continue calibra-tion at step 15.15.Replace type J cable with T ype T.16.Set calibrator output to 32°F, type T.17.Wait for U.U.T. readout to stabilize, then press HOLD key once, and waita few seconds. U.U.T. should read 32.0°F ±0.5°F, type T.18.Set calibrator output to 750°F, type T.19.Wait for U.U.T. reading to stabilize, then press HOLD key once, and waita few seconds. U.U.T. should read 750.0°F ±1.0°F, type T.20.Press HOLD key one last time. Wait for HOLD annunciator to show onreadout. (Indicates that calibration data is stored in EEPROM.)21.Carefully remove battery cover while holding battery in place. Loss ofbattery power at this time will cause loss of calibration data.22,Remove back cover while holding battery in place.23.Remove shorting-plug J1 (from the Cal position only) to write-protectEEPROM.24.T urn off U.U.T. and remove battery. Replace rear cover and battery coverand then re-install battery. Calibration is complete.2. DISASSEMBLY INSTRUCTIONSBefore opening the case, remove all input/output connections. This includes input sensors, calibration cables, and the optional battery charger.T urn the instrument face down, and remove the three Phillips head screws from the rear cover. Lift off the rear cover. The circuit board can be lifted from the front case after removal of the hexagonal-standoff.NOTE:Be sure to keep the case face down during this laststep. Otherwise, the LCD and its associated hardwaremay fall free and break.19Re-assemble the instrument by following the reverse of the above procedure.CAUTIONDo not use excessive torque when re-installing the nylonmachine-screw into the rear case. Excess torque will dam-age the part.WARNINGDo not substitute a metal part for the nylon machine-screw.Doing so will degrade the electrical isolation of the instru-ment.203. MECHANICAL PARTS DIAGRAMBOTTOM COVERMODEL HH-21819A-307HH-22819A-307HH-23819A-307TOP COVERMODEL HH-21819A-305HH-21820A-305HH-23820A-305TC CONNCECTORS (2)OVERLAY(NOT SHOWN)MODEL HH-21HH21A-320HH-22HH22A-320HH-23HH23A-320MEMBRANE KEYPAD(NOT SHOWN)MODEL HH-21A819-322-AHH-21A821-322-DHH-21A821-322-DLCD SUPPORT130A-307-1BA TTERY COVER INCLUDED W/BOTTOM COVERTILT BAIL8660-304-121222324WARRANTY/DISCLAIMEROMEGA ENGINEERING,INC.warrants this unit to be free of defects in materials and workmanship for a period of 37months from date of purchase.OMEGA Warranty adds an additional one (1)month grace period to the normal three (3)year product warranty to cover handling and shipping time.This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit should malfunction,it must be returned to the factory for evaluation.OMEGA’s Customer Service Department will issue an Authorized Return (AR)number immediately upon phone or written request.Upon examination by OMEGA,if the unit is found to be defective it will be repaired or replaced at no charge.OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,including but not limited to mishandling,improper interfacing,operation outside of design limits,improper repair,or unauthorized modification.This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion;or current,heat,moisture or vibration;improper specification;misapplication;misuse or other operating conditions outside of OMEGA’s ponents which wear are not warranted,including but not limited to contact points,fuses,and triacs.OMEGA is pleased to offer suggestions on the use of its various products.However,OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with informa-tion provided by OMEGA,either verbal or written.OMEGA warrants only that the parts manufactured by it will be as specified and free of defects.OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER,EXPRESSED OR IMPLIED,EXCEPT THAT OF TITLE,AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.LIMITATION OF LIABILITY:The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order,whether based on contract,warranty,negligence,indemnification,strict liability or otherwise,shall not exceed the purchase price of the component upon which liability is based.In no event shall OMEGA be liable for consequential,incidental or special dam-ages.CONDITIONS:Equipment sold by OMEGA is not intended to be used,nor shall it be used:(1)as a “Basic Component”under 10CFR 21(NRC),used in or with any nuclear installation or activity;or (2)in medical applications or used on humans.Should any Product(s)be used in or with any nuclear installation or activity,medical application,used on humans,or misused in any way,OMEGA assumes no responsibility as set forth in our basic WARRANTY/DISCLAIMER language,and additionally,purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s)in such a manner.RETURN REQUESTS /INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department.BEFORE RETURNING ANY PRODUCT(S)TO OMEGA,PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS).The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges,freight,insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS,please have the fol-lowing information available BEFORE contacting OMEGA:1.P.O.number under which the product wasPURCHASED,2.Model and serial number of the product underwarranty,and 3.Repair instructions and/or specific problems relative to the product.FOR NON-WARRANTY REPAIRS,consult OMEGA for current repair charges.Have the following information available BEFOREcontacting OMEGA:1.P.O.number to cover the COSTof the repair,2.Model and serial number of product,and3.Repair instructions and/or specific problems relative to the product.OMEGA’s policy is to make running changes,not model changes,whenever an improvement is possible.This affords our customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING,INC.©Copyright 1996OMEGA ENGINEERING,INC.All rights reserved.This document may not be copied,photocopied,reproduced,translated,or reduced to any electronic medium or machine-readable form,in whole or in part,without prior written consent of OMEGA ENGINEERING,INC.Where Do I Find Everything I Need for Process Measurement and Control?OMEGA…Of Course!TEMPERATUREⅪߜThermocouple,RTD&Thermistor Probes,Connectors,Panels&AssembliesⅪߜWire:Thermocouple,RTD&ThermistorⅪߜCalibrators&Ice Point ReferencesⅪߜRecorders,Controllers&Process MonitorsⅪߜInfrared PyrometersPRESSURE,STRAIN AND FORCEⅪߜTransducers&Strain GaugesⅪߜLoad Cells&Pressure GaugesⅪߜDisplacement TransducersⅪߜInstrumentation&AccessoriesFLOW/LEVELⅪߜRotameters,Gas Mass Flowmeters&Flow ComputersⅪߜAir Velocity IndicatorsⅪߜTurbine/Paddlewheel SystemsⅪߜTotalizers&Batch ControllerspH/CONDUCTIVITYⅪߜpH Electrodes,Testers&AccessoriesⅪߜBenchtop/Laboratory MetersⅪߜControllers,Calibrators,Simulators&PumpsⅪߜIndustrial pH&Conductivity EquipmentDATA ACQUISITIONⅪߜData Acquisition&Engineering SoftwareⅪߜCommunications-Based Acquisition SystemsⅪߜPlug-in Cards for Apple,IBM&CompatiblesⅪߜDatalogging SystemsⅪߜRecorders,Printers&PlottersHEATERSⅪߜHeating CableⅪߜCartridge&Strip HeatersⅪߜImmersion&Band HeatersⅪߜFlexible HeatersⅪߜLaboratory HeatersENVIRONMENTALMONITORING AND CONTROLⅪߜMetering&Control InstrumentationⅪߜRefractometersⅪߜPumps&TubingⅪߜAir,Soil&Water MonitorsⅪߜIndustrial Water&Wastewater TreatmentⅪߜpH,Conductivity&Dissolved Oxygen Instruments M0739/12/07。

OMEGAHHM599 Digital Trms Clamp-On MeterOMEGAnet On-Line Service Internet e-mail **************Servicing North America:USA: ISO 9001 Certified Canada:One Omega Drive, Box 4047976 Bergar Stamford, CT 06907-0047Laval (Quebec) H7L5A1 Tel: (203) 359-1660Tel: (514) 856-6928 FAX: (203)359-7700FAX: (514) 856-6886e-mail:**************e-mail:**************SAFETY INFORMATIONThe following safety information must be observed to insure maximum personal safety during the operation at this meter:1. Do not use the meter if the meter or test leads look damaged, or if you suspect that the meter is not operating properly.2. Use caution when working above 60V dc or 30V ac rms. Such voltages posea shock hazard.3. When Using the probes, keep your fingers behind the finger guards on the probes.4. Measuring voltage which exceeds the limits of the clampmeter may damage the meter and expose the operator to a shock hazard. Always recognize the meter voltage limits as stated on the front of the meter.5. If the equipment is used in a manner not specified by the manufacturer, the protection provided the equipment may be impaired.SPECIFICATIONSDisplay: 3¾ digit (4000 counts), 9999counts (Frequency mode), 40 segments analog bar graph and function units sign annunciators.Polarity: Automatic, positive implied, negative polarity indication. Overrange: "4000"or"-4000" Most Significant Digit blinks.Low battery indication: the "" is displayed when the battery voltage drops below the operating level.Measurement rate: 2/sec,nominal. 1/sec, Capacitance and Frequency mode. 20/sec, Analog display.Operating Environment: 0°C to 40°C at < 70% relative humidity.Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery removed from meter.Accuracy: Stated accuracy at 23°C ± 5°C, <75% relative humidity. Safety: According to EN61010-1 protection class II overvoltage category (CAT III 600V) pollution degree 2.Auto Power off: 30minutes after rotary switch or mode changes.Clamp jaw: According to EN61010-2-032 CAT IV 600V.Power: single standard 9-volt battery.Battery life: 150 hours typical.Dimensions: 250mm (H) x 100mm (W) x 46mm (D).Weight: Approx. 380g including battery.Accessories: One pair test leads, 9V battery.DC VOLTSRanges: 400mV,4V,40V,400V,600VResolution: 100µVAccuracy:±(0.25%rdg + 1dgt) on 400mV to 400V ranges ±(0.25%rdg + 3dgts) on 600V rangeInput impedance: >10M WOverload protection: 600VDC or AC rmsAC VOLTS (True RMS) (50Hz-500Hz)Ranges: 4V,40V,400V,600VResolution: 1mVAccuracy:±(0.75%rdg + 4dgts) on 50-60Hz±(2.0%rdg + 4dgts) on 40-500HzInput impedance: >10M WEffect Reading: 100 - 3999Overload protection: 600VDC or 600VAC rms RESISTANCERanges: 400W,4K W,40K W,400K W,4000K W,40M W Accuracy:±(0.3%rdg + 5dgts) on 400W range±(0.3%rdg + 1dgt) on 4K W to 400K W ranges±(0.5%rdg + 1dgt) on 4000K W range±(2.0%rdg + 4dgts) on 40M W rangeOpen circuit volts: 0.4VdcOverload protection: 600VDC or AC rmsCONTINUITYAudible indication: less than 40W±20WOverload protection: 600VDC or AC rmsDIODE TESTTest current: 1.0mA±0.6mAAccuracy:±(3.0%rdg + 3dgts)Open circuit volts: 3.0Vdc typicalOverload protection: 600VDC or AC rms FREQUENCY (Autoranging)Ranges: 100Hz,1KHz,10KHz,100KHz,500KHz Resolution: 0.01HzAccuracy:±(0.1%rdg + 2dgts)Sensitivity: 2.0Vrms minEffect reading: 10-9999Overload protection: 600VDC or AC rms CAPACITANCERanges: 4nF,40nF,400nF,4µF,40µFAccuracy:±(3.0%rdg + 20dgts) on 4n Frange(use D ZERO)±(3.0%rdg + 4dgts) on 40nF to 20µF ranges±(6.0%rdg + 4dgts) above 20µFOverload protection: 600VDC or AC rmsDC CURRENT (Put conductor at the center of the jaws)Ranges: 400A,700AResolution: 100mAAccuracy:±(1.5%rdg + 5dgts)*700A to 1200A: ±(2.0%rdg + 5dgts)Overload protection: 1200Adc max. for 1 minuteAC CURRENT (True RMS) (40Hz-500Hz)(Put conductor at the center of the jaws)Ranges: 400A,700AResolution: 100mAAccuracy:±(1.75%rdg + 5dgts) on 50Hz-60Hz±(3.5%rdg + 5dgts) on 40Hz-500Hz*700A to 1000A(50Hz/60Hz): ±(2.5%rdg + 5dgts)Overload protection: 1000Aac max. for 1 minuteOPERATIONBefore taking any measurements, read the Safety Information Section. Always examine the instrument for damage, contamination (excessive dirt, grease, etc.) and defects. Examine the test leads for cracked or frayed insulation. If any abnormal conditions exist do not attempt to make any measurements.In the Data Hold mode, the "HOLD" annunciator is displayed and the last reading is held on the display, the beeper emits a tone. Pressing (MIN / MAX) button when you are in the Data Hold mode causes you to exit Data Hold and enter the MIN MAX Recording mode.In the MIN MAX Recording mode, press (HOLD) button to stop the recording of readings, press (HOLD) again to resume recording.PEAK HOLD Button: (only AC current ranges 40-60Hz)PEAK Hold mode, the "HOLD" annunciator is displayed. {Accuracy:MIN / MAX buttonPress (MIN / MAX) button to enter the MIN MAX Recording mode. The minimum, maximum values are then reset to the present input, the readings are stored in memory, and the "HOLD" annunciator turns on. Push the button to cycle through the minimum (MIN), maximum (MAX), and present readings. The MIN or MAX annunciator turns on to indicate what value is being displayed.In the MIN MAX Recording mode, press (HOLD) button to stop the recording of readings, press again to restart recording. If recording is stopped, the minimum, maximum, or present values and analog diaplay are frozen. In the MIN MAX Recording mode, when a new minimum value is exceed the actual minimum readings or a new maximum value is overload, the minimum or maximum value will held on the display, but the analog display continues to be active.AC current ranges without MIN/MAX function.D ZERO ButtonPress (D ZERO) button to enter the Relative mode, the "D ZERO" annunciator turn on, zero the display, and store the displayed reading as a reference value. Press and hold down the (D ZERO) button for 2 seconds to exit the relative mode.RANGE ButtonPress (RANGE) button to select the Manual Range mode and turn off the "AUTO" annunciator. (The meter remains in the range it was in when manual ranging was selected).In the Manual Range mode. each time you press (RANGE) button, the range (and the input range annunciator) increments, and a new value is displayed. To exit the Manual Range mode and return to autoranging, press and hold down (RANGE) button for 2 seconds. The "AUTO" annunciator turns back on. Voltage Measurements1. Connect the red test lead to the "V" jack and the black test lead to the "COM" jack.2. Set the Function/Range switch to the desired voltage range (AC or DC). The meter will automatically select the best voltage range.3. Connect the test leads to the device or circuit being measured.4. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied. Current Measurements1. Set the Function/Range switch to the desired highest 700A range (AC or DC). In DC current measurement use D ZERO button, offset the residual magnetic of the jaws.2. Press the trigger to open transformer jaws and clamp onto one conductor only. Read the current directly on the display. It is recommended that the conductor be placed at the center of the closed jaws for maximum accuracy.3. When the reading is lower than 400 counts, set the range switch to the next lower range position. For maximum accuracy, select the lower range possible without overranging the meter.Resistance Measurements1. Set the Function/Range switch to the resistance range.2. Remove power from the equipment under test.3. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.4. Touch the probes to the test points. In ohms, the value indicated in the display is the measured value of resistance.WARNINGThe accuracy of the functions might be slightly affected, when exposed to a radiated electromagnetic field environment, eg, radio, telephone or similar.Continuity Measurements1. Set the Function/Range switch to the "" position.2. Remove power from the equipment under test.3. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.4. Touch the probes to the test points. the beeper sounds continuously, if the resistance is less than 40W.Diode Tests1. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.2. Set the Function/Range switch to the "" position.3. Turn off power to the circuit under test.4. Touch probes to the diode. A forward-voltage drop is about 0.6V (typical fora silicon diode).5. Reverse probes. If the diode is good, "4000" is displayed. If the diode is shorted, ".000" or another number is displayed.6. If the diode is open, "4000" is displayed in both directions.Frequency Measurements1. Set the Function/Range switch to the Hz position.2. Connect the red test lead to the " + " jack and the black test lead to the "COM" jack.3. Connect the test leads to the point of measurement and read the frequency from the display.Capacitance Measurements1. Set the Function/Range switch to the " " range.2. Connect the test leads to the " + " jack and the black test lead to the "COM" jack.3. Connect the red test lead to the capacitor and read the eapacitance dircetly from the display.MAINTENANCEWARNINGRemove test leads before changing batteryor performing any servicing.Battery ReplacementPower is supplied by a 9 volt "transistor" battery. (NEDA 1604, IEC 6F22). The "" appears on the LCD display when replacement is needed. To replace the battery, remove the two screws from the back of the meter and lift off the battery cover. Remove the battery from battery contacts.CleaningPeriodically wipe the case with a damp cloth and detergent, do not use abrasives or solvents.WARRANTY / DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA's customers receive maximum coverage on each product.If the unit should malfunction, it must be returned to the factory for evaluation. OMEGA's Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced at no charge. OMEGA's WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive corrosion; or current, heat moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA's control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a "Basic Component" under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS / INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBT AIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA'S CUSTOMER SERVICE DEP ARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:1.P.O. number under which the product was PURCHASED.2.Model and serial number of the product under warranty, and3.Repair instructions and/or specific problems relative to theproduct.FOR NON-WARRANTY REP AIRS, consult OMEGA for current repair charges. Have the following informationavailable BEFORE contacting OMEGA:1.P.O. number to cover the COST of the repair.2.Model and serial number of product , and3.Repair instructions and/or specific problems relative to theproduct.OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC. © Copyright 1999 OMEGA ENGINEERING,Where Do I Find Everything I Need for Process Measurement and Control?OMEGA...Of Course!TEMPERATUREþThermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies þWire: Thermocouple, RTD & Thermistor þCalibrators & Ice Point ReferencesþRecorders, Controllers & Process Monitors þInfrared PyrometersPRESSURE/STRAIN AND FORCEþTransducers & Strain GaugesþLoad Cells & Pressure GaugesþDisplacement TransducersþInstrumentation & AccessoriesFLOW/LEVELþRotameters, Gas Mass Flowmeters& Flow ComputersþAir Velocity IndicatorsþTurbine/Paddlewheel SystemsþTotalizers & Batch ControllerspH/CONDUCTIVITYþpH Electrodes, Testers & AccessoriesþBenchtop/Laboratory MetersþControllers, Calibrators, Simulators& PumpsþIndustrial pH & Conductivity Equipment DATA ACQUISITIONþData Acquisition &Engineering SoftwareþCommunications-Based Acquisition SystemsþPlug-in Cards for Apple, IBM& CompatiblesþDatalogging SystemsþRecorders, Printers & Plotters HEATERSþHeating CableþCartridge & Strip HeatersþImmersion & Band HeatersþFlexible HeatersþLaboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL þMetering & Control Instrumentation þRefractometersþPumps & TubingþAir, Soil & Water MonitorsþIndustrial Water & Wastewater TreatmentþpH, Conductivity & Dissolved Oxygen Instruments。

e-mail:**************For latest product manuals:HHM-MG300Wireless TRMS Multimeterand Insulation TesterShop online at ®User’s GuideMADE IN TAIWANIt is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.WARNING: These products are not designed for use in, and should not be used for, human applications.HHM-MG300Wireless TRMS Multimeter and Insulation TesterSoftware IntroductionThe MultiMeter software is a program for collecting data from the meter when it is connected to a Desktop or Notebook PC(Personal Computer). The data may be displayed graphically within this software application or may be export to spreadsheet software programs. The softwareʼs functions are presented in the main window.The maximum number of data points that can be captured is 20,000. Supported Operating Systems:Windows 2000/Windows XP /Vista/Windows 7Minimum Hardware Required:•Desktop or Notebook PC with a minimum clock speed of 90MHz•32 MB RAM•7 MB hard disk space•Monitor display resolution of 1280 x 1024 with High Color (32 bit)Main Menu•FileSave Save the recorded data to the PCOpen Open a file previously saved on the PCPrint Setup Modify the print optionsPrint Preview Preview the data graph or the data listPrint Print the data graph or the data list•ViewToolbar Show or hide the ToolbarStatus Bar Show or hide the Status BarInstrument Show or hide the instrument window •InstrumentReal Time Chart Recording Start collecting real time dataStop Recording Stop collecting real time data•WindowCascade Arrange windows in an overlapping styleTile Arrange windows in a non-overlapping tile style •HelpAbout Show the software version informationHelp Topics Show the software help utilityOperationEnabling Communication1. Switch the meter ON2. Put the meter in the “USB” mode by pressing and holding the meter’s USB buttonfor two seconds (meter will beep when USB mode is accessed)3. Connect the receiver to the PC’s USB port using the supplied cable4. Run the MultiMeter software program5. Double click the small meter icon on the software screen (shown in the diagrambelow). The larger meter image will appear6. If communication is successful, the larger virtual meter image will accuratelyreflect the current state of the meter (shown in diagram below)Downloading Datalogged Information from UnitDownloading data from the Unit to the PC takes a few steps:Do not establish communication prior to downloading data. If there is communicationbetween the unit and the PC unwanted data may be included in the List/Graph of thedatalogged information.1. After the software has been started, Press and HOLD the STORE button for twoseconds to enter the RECALL function. “RCL” will appear on the bottom left of thedisplay2. A real time recording must be initiated before data can be downloaded.Refer to the Real Time Chart Recording section for assistance—recommendedmaximum data points for a real time recording is 8000.3. Press and Hold the HOLD button for two seconds and the data will be transferred to thePC.4. The data will form a graph and a data list in the software’s main window.Real Time Chart Recording1. Click to open the Sampling Setup dialog box as shown below.2. Enter the desired number of samples to record and then click “OK”. The data willbegin plotting on the graph (as shown below).Custom Scale: Configure the vertical scale.•Enter the minimum scale value in the minimum edit box (as shown above). •Enter the maximum scale value in the maximum edit box.Auto scale: Select Auto Scale to allow the vertical scale to be automatically configured based on the data plot.Custom scale: Select Custom Scale to configure the vertical scale as described above. Graph Format: Configure the graph and data format.The “Data Visible” check box allows the user to show/hide the data on the graph.The HORIZONTAL and VERTICAL check boxes allow the user to add/remove grid lines from horizontal and vertical axis.The “Mark Points” feature shows the individual data points on the graph.“Save the setting” allows the user to save the settings with the document.Click these buttons in the Graph Format window to open the color selector chart for the related feature (the color chart is shown below).Zoom in: When the ZOOM IN icon is selected, the icon will highlight1. Press the left mouse button and drag a rectangle around the area to beexpanded.2. Release the mouse button.3. Use the scrollbar to scroll through the data.Zoom out: Zoom out to the full view by clicking.Cursor: When the cursor icon is selected, the icon will highlight When the cursor mode is selected:•Click a data point on the graph to indicate its value.•Click on or near a data point to indicate the value of the data point. The data point selected can be changed by navigating the cursor or by: •Using the clicking method.•Clicking and dragging the mouse horizontally in the graph..Click the “Data List” Tab to open the Data List window (as shown below).File Save and File Open1. Click the icon to open the file save dialog box.2. Name the file and save it using the default extension. The file will be saved withthe “.recorder” extension to be reopened in the Multimeter software program and also as a “.xls” file to be opened in a spreadsheet program.3. To open an existing data file for viewing on the data graph window, click on theicon and select a “. recorder” document.Print graph and listPrint Setup:Print Preview: Preview the data graph or the data list. Print: Print the graph or the list.WARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request.Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY /DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS/INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have thefollowing information available BEFOREcontacting OMEGA:1.Purchase Order number under which the productwas PURCHASED,2.Model and serial number of the product underwarranty, and3.Repair instructions and/or specific problemsrelative to the product.FOR NON-WARRANTY REPAIRS,consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:1. Purchase Order number to cover the COST of the repair,2.Model and serial number of the product, and 3.Repair instructions and/or specific problems relative to the product.OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.© Copyright 2012 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without theprior written consent of OMEGA ENGINEERING, INC.Where Do I Find Everything I Need for Process Measurement and Control?OMEGA…Of Course!Shop online at SMTEMPERATUREⅪߜThermocouple, RTD & Thermistor Probes, Connectors, Panels & AssembliesⅪߜWire: Thermocouple, RTD & ThermistorⅪߜCalibrators & Ice Point ReferencesⅪߜRecorders, Controllers & Process MonitorsⅪߜInfrared PyrometersPRESSURE, STRAIN AND FORCEⅪߜTransducers & Strain GagesⅪߜLoad Cells & Pressure GagesⅪߜDisplacement TransducersⅪߜInstrumentation & AccessoriesFLOW/LEVELⅪߜRotameters, Gas Mass Flowmeters & Flow ComputersⅪߜAir Velocity IndicatorsⅪߜTurbine/Paddlewheel SystemsⅪߜTotalizers & Batch ControllerspH/CONDUCTIVITYⅪߜpH Electrodes, Testers & AccessoriesⅪߜBenchtop/Laboratory MetersⅪߜControllers, Calibrators, Simulators & PumpsⅪߜIndustrial pH & Conductivity EquipmentDATA ACQUISITIONⅪߜData Acquisition & Engineering SoftwareⅪߜCommunications-Based Acquisition SystemsⅪߜPlug-in Cards for Apple, IBM & CompatiblesⅪߜData Logging SystemsⅪߜRecorders, Printers & PlottersHEATERSⅪߜHeating CableⅪߜCartridge & Strip HeatersⅪߜImmersion & Band HeatersⅪߜFlexible HeatersⅪߜLaboratory HeatersENVIRONMENTALMONITORING AND CONTROLⅪߜMetering & Control InstrumentationⅪߜRefractometersⅪߜPumps & TubingⅪߜAir, Soil & Water MonitorsⅪߜIndustrial Water & Wastewater TreatmentⅪߜpH, Conductivity & Dissolved Oxygen InstrumentsM5139/0612。

M3765/1201W h e r e Do I Find Everything I Need forP r ocess Measurement and Control?OMEGA…Of Course!Shop online at T E M P E R A T U RECalibrators &I ce P oint ReferencesLoad C ells &P ressure GagesAir V elocity IndicatorsBenchtop/Laboratory MetersCommunications-Based A cquisition SystemsRecorders,P rinters &P lottersH E A T E RSImmersion &B and HeatersR e f r a c t o m e t e r sIndustrial Water & Wastewater Treatmente-mail:**************Contents Contents (i)WARNING...............................................................................................i i CAUTION................................................................................................i i Chapter 1INTRODUCTION (1)Chapter 2SPECIFICATIONS (2)Chapter 3OPERATION (5)3.1 Initial Inspection and Setup (5)3.2. Connection (5)3.2.1 General Considerations (5)3.2.2 Electrical Considerations (5)3.2.3 Four-Wire Kelvin Lead Connections (5)3.2.4 Thermal emf Considerations (6)3.3 Dial Setting (6)3.4 Environmental Conditions (6)Chapter 4MAINTENANCE (7)4.1Verification of Performance (7)4.1.1 Calibration Interval (7)4.1.2 General Considerations (7)4.1.3 Procedure (7)4.2 Schematic (7)FiguresFigure 1.1 DBX Series High-Accuracy Decade Box (1)Figure 2.1 Typical Operating Guide Affixed to Unit (4)Figure 3.1 Optimal 4-Wire Kelvin Lead Connection (6)Figure 4.1 DBX Series Schematic Diagram (8)WARNINGOBSERVE ALL SAFETY RULES‘WHEN WORKING WITH HIGH VOLTAGES OR LINE VOLTAGES.ELECTRICAL SHOCK HAZARD. DO NOT OPEN CASE.REFER SERVICING TO QUALIFIED PERSONNEL.HIGH VOLTAGE MAY BE PRESENT WITH HIGH VOLTAGE OPTIONS. WHENEVER HAZARDOUS VOLTAGES (> 45 V) ARE USED, TAKE ALL MEASURES TOA VOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS:- USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARECONDUCTORS.REMOVE POWER WHEN HANDLING UNIT.POST WARNING SIGNS AND KEEP PERSONNEL SAFELY AWAY.CAUTIONDO NOT APPLY ANY VOLTAGES OR CURRENTS TO THE TERMINALS OF THIS INSTRUMENT IN EXCESS OF THE MAXIMUM LIMITS INDICATED ONTHE FRONT PANEL OR THE OPERATING GUIDE LABEL.Chapter 1 INTRODUCTIONThe Omega DB series of resistance decade boxes is a family of instruments providing a very broad choice of high-performance resistance sources. Any num-ber of decades from one to eleven is available in a choice of accuracies.The Omega DB decade box is a precision resis-tance source with excellent characteristics of stabil-ity, temperature coefficient, power coefficient, and frequency response.The Omega DB Series employs very-low-resistance switches with silver alloy contacts. A special design keeps zero resistance to less than 1 mΩ per decade. Self cleaning keeps the silver contacts from becom-ing tarnished when unused, or when only low cur-rents are passed through them. This is most often the case when only minute test currents are drawn by digital multimeters or other test instruments. Contact resistance is stable and remains low and repeatable. High-quality gold-plated tellurium-copper binding posts serve to minimize the thermal emf effects which would artificially reflect a change in dc resistance measure-ments. All other conductors within the instrument, as well as the solder employed, contain no metals or junc-tions that could contribute to thermal emf problems.The standard models offer a choice of one through eleven decades. The panels are clearly labeled show-ing the step size and maximum voltage and current limitations for each decade.With a resolution as low as 1 mΩ and a maximum available resistance of over 111 MΩ, the Omega DB series may be used for exacting precision measure-ment applications requiring high accuracy, good sta-bility, and low zero-resistance. They can be used as components of dc and ac bridges, for calibration, as transfer standards, and as RTD simulators.The Omega DB Series may be rack-mounted to serve as components in measurement and control sys-tems.Figure 1.1. DBX Series High Accuracy Decade BoxChapter 2SPECIFICATIONSFor convenience to the user, the pertinent specifications are given in an OPERATING GUIDE affixed to the case of the instrument. Figure 2.1 shows a typical example.SPECIFICATIONSSingle Decade DBX UnitSINGLE DECADE UNITSORDERING INFORMATIONSingle-decade units are available withresistance as low as 1 m Ω per step toas high as 10 M Ω per step. These unitssatisfy many system applications re-quiring only a single decade whilemaintaining all the quality features ofthe DB series.Each decade is enclosed in an alumi-num case which can serve as a shield.It may be panel mounted and inte-grated with additional units to form potentiometer circuits or other con-figurations.Each unit consists of low-inductance resistors in series, with a high-perfor-mance solid-silver-alloy-contact switch.* For less exacting applications, more economical tolerances are available:- For 0.02% accuracy substitute DBQ in part number in lieu of DBX- For 0.05% accuracy substitute DBA in part number in lieu of DBX- For 0.1% accuracy substitute DBB in part number in lieu of DBX OPTIONS - RM Rack mountable case for standard 19" rack - K Kelvin type 4-terminal binding posts - RO Rear output binding postsChapter 3OPERATION3.2.2 Electrical Considerations In order to make proper use of the full performance capabilities of the DBX unit, especially if low resis-tance or low-resistance increments are important,care must be taken in connecting to the terminals of the decade box.In particular, in order to keep contact resistance to a minimum, the most substantial and secure connec-tion to the binding posts should be made. They ac-cept banana plugs, telephone tips, spade lugs, alli-gator clips, and bare wire. The largest or heaviest mating connection should be made, and, where ap-plicable, the binding posts should be securely tight-ened.These considerations may be relaxed whenever single milliohms are considered significant for the task being performed.3.2.3Four-Wire Kelvin Lead Connections Whenever possible, 4-wire Kelvin leads, the ideal connection, should be employed. Such a connec-tion minimizes the effects of contact resistance and approaches ideal performance.If the four terminals are available as clamps similar to alligator clips, they may be connected to the necks of the binding posts. If the four terminals are avail-able separately, the optimal connection is shown in Figure 3.1, where the current leads are introduced into the top of the binding posts, and the voltage leads at the necks.3.1 Initial Inspection and SetupThis instrument was carefully inspected before ship-ment. It should be in proper electrical and mechanical order upon receipt.An OPERATING GUIDE is attached to the case of the instrument to provide ready reference to speci-fications.3.2 Connection3.2.1General ConsiderationsThe DBX Series Decade unit provides three termi-nals labeled H (high), L (low), and G (ground). The H and L terminals are connected to the ends of the resistance being set; the G terminal is connected to the case. The G terminal may be used as a guard or shield terminal. It may also be connected (using a shorting link) to either terminal to allow two-termi-nal as opposed to three-terminal measurements.In order to make the most stable measurements,determine which is the more sensitive of the two user leads, i.e. the one going into a higher impedance.This lead should be connected to the more protected one of the two DBX terminals. That would either be the DBX terminal that is shorted to the case, or the LOW DBX terminal whenever neither is con-nected to the case.3.2.4 Thermal emf ConsiderationsThe highest-quality low-ernf components are used in the DBX Series. There nevertheless may be some minute thermal emf generated at the test leads where they contact the gold banana jacks.This emf will not reflect itself if an ac measurement instrument is employed. It will also be eliminated if a meter with so called “True Ohm” capability is used. Otherwise it may represent itself as a false compo-nent of the dc resistance measurement.3.3 Dial SettingWhenever the dials are used in positions 0-9, the resulting resistance is simply read directly. Both the decimal point and the steps are clearly marked on the panel.For additional flexibility and range, each decade pro-vides a “10” position setting. This “10” position on any one decade equals the “1” position on the next higher decade. It adds about 11% to the nominal total decade resistance.To determine the resistance obtained when one or more “10” settings are used, simply add “1” to the next higher decade. For example, a setting of3-6-10-0-10 Ω becomes:330000660001010000001010____________________________ TOT37010and a setting of 10-10-10-l0-10.10 Ωbecomes:10100000.01010000.0101000.010100.01010.0.10 1.0________________________________ TOT11111 1.0 3.4 Environmental ConditionsFor optimal accuracy, the decade box should be used in an environment of 23o C. It should be allowed to stabilize at that temperature after any significant tem-perature variation.Humidity should be maintained at laboratory condi-tions. This is especially important if high resistances are involved.Figure 3.1 Optimal 4-Wire Kelvin Lead ConnectionChapter 4 MAINTENANCE4.1Verification of Performance4.1.1Calibration IntervalThe DB Series instruments should be verified for performance at a calibration interval of twelve (12) months. This procedure may be carried out by the user if a calibration capability is available, by Omega, or by a certified calibration laboratory.If the user should choose to perform this procedure, then the considerations below should be observed.4.1.2General ConsiderationsIt is important, whenever testing the DBX Series Decade Units, to be very aware of the capabilities and limitations of the test instruments used. A resis-tance bridge may be employed, and there are di-rect-reading resistance meters or digital multimeters available that can verify the accuracy of these units, especially when used in conjunction with standards that can serve to confirm or improve the accuracy of the testing instrumentSuch test instruments must be significantly more ac-curate than ±(l00ppm+2 mΩ) for all applicable ranges, allowing for a band of uncertainty of the in-strument itself. A number of commercial bridges and meters exist that can perform this task; consult Omega.It is important to allow both the testing instrument and the DBX Substituter to stabilize for a number of hours at the nominal operating temperature of 23O C, and at nominal laboratory conditions of hu-midity. There should be no temperature gradients across the unit under test.Substantial Kelvin type 4-wire test terminals should be used to obtain accurate low-resistance readings. It is convenient, once the zero resistance has been determined, to subtract it from the remaining mea-surements. This can be automatically done in many instruments which have an offset subtraction capa-bility.4.1.3 Procedure1.Confirm the zero resistance of the unit.2.Determine the allowable upper and lowerlimits for each resistance setting of each decade following the specified accuracy. For theDBX series, these limits for any resistance“R” are [R±(0.0001 R + 2 mΩ)]. For the A,B, or Q series, see specifications.3.Confirm that the resistances fall within theselimits after subtraction of the zero resistance.4.If any resistances fall outside these limits, theassociated switch assembly may requirereplacement.4.2 SchematicRefer to Figure 4.1 for a schematic of the DB de-cade unit.8MAINTENANCEFigure 4.1. DB Series Schematic DiagramServicing North America: USA:One Omega Drive, P.O. Box 4047ISO 9001 Certified Stamford CT 06907-0047TEL: (203) 359-1660FAX: (203) 359-7700e-mail:**************Canada:976 BergarLaval (Quebec) H7L 5A1TEL: (514) 856-6928FAX: (514) 856-6886e-mail:*************For immediate technical or application assistance: USA and Canada:Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA®Customer Service: 1-800-622-2378 / 1-800-622-BEST®Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN®TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA Mexico:En Espan˜ol: (001) 203-359-7803e-mail:*****************FAX: (001) 203-359-7807**************.mxServicing Europe:Benelux:Postbus 8034, 1180 LA Amstelveen, The NetherlandsTEL: +31 (0)20 3472121FAX: +31 (0)20 6434643Toll Free in Benelux: 0800 0993344e-mail:*****************Czech Republic:Rudé armády 1868, 733 01 Karviná 8TEL: +420 (0)69 6311899FAX: +420 (0)69 6311114Toll Free: 0800-1-66342e-mail:*************** France:9, rue Denis Papin, 78190 TrappesTEL: +33 (0)130 621 400FAX: +33 (0)130 699 120Toll Free in France: 0800-4-06342e-mail:**************Germany/Austria:Daimlerstrasse 26, D-75392 Deckenpfronn, GermanyTEL: +49 (0)7056 9398-0FAX: +49 (0)7056 9398-29TollFreeinGermany************e-mail:*************United Kingdom:One Omega Drive, River Bend Technology CentreISO 9002 Certified Northbank, Irlam, ManchesterM44 5BD United KingdomTEL: +44 (0)161 777 6611FAX: +44 (0)161 777 6622Toll Free in United Kingdom: 0800-488-488e-mail:**************.ukWARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 25 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal two (2) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit malfunctions, it must be returned to the factory for evaluation. O M E G A’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. O M E G A’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of O M E G A’s control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR R E P R E S E N T ATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PA R TICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF L I A B I L I T Y: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or a c t i v i t y, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WA R R A N T Y/DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS/INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPA R TMENT (IN ORDER TO AV O I D PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have thefollowing information available BEFOREcontacting OMEGA:1.Purchase Order number under which the productwas PURCHASED,2.Model and serial number of the product underwarranty, and3.Repair instructions and/or specific problemsrelative to the product.FOR NON-WARRANTY REPAIRS,consult OMEGAfor current repair charges. Have the followinginformation available BEFORE contacting OMEGA:1. Purchase Order number to cover the COSTof the repair,2.Model and serial number of the product, and3.Repair instructions and/or specific problemsrelative to the product.OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.© Copyright 2001 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.OMEGAnet®Online Service Internet e-mailw w i n f o@o m e g a.c o mIt is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. acceptsno liability for any errors it contains, and reserves the right to alter specifications without notice.WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.。

e-mail:**************For latest product manuals: /en-us/pdf-manualsShop online at User’s GuideDPG210-KITPressure Calibration KitNOTICE1.Please check the packaging and appearance after you received the product.2.Please check the mode and specification of the product. Ensure correct electrical connection and mounting method.3.Power: three AA battery or USB-power.4.During use, please note the technical and operation conditions: the temperature of medium, burst pressure, power supply.5.This product is a precision device, DO NOT use hard objects to touch the diaphragm or disassemble.6.During installation, do not install or uninstall with excessive forces, take special care with the installation of thread.7.Please install or uninstall with a suitable wrench.8.After starting the gauge, it is a normal phenomenon to take a few minutes to stabilize and work normally.9.During installation, the gauge may be affected by installation stress. After installation,please clear zero with no pressure applied.[!) Product damage caused by non-professional operation according to the operation instructions is not within the scope of the warranty.The DPG210-KIT pressure calibration kits combine the high accuracy of our DPG210 digital pressure gauges with a pneumatic or hydraulic hand pump, providing an excellent solution for field calibration needs. Kits include the DPG210 digital gauge in your selected pressure range, hand pump, rugged carrying case, and a selection of fittings and hose. Kits with ranges of 500 psi or below includes a pneumatic handpump capable of generating 0 to 500 psi pressure. For ranges of 1,000 psi or higher, a 0 to 10,000 psi hydraulic hand pump is included.Notice: The oil cup is made of plexiglass. It is forbidden to contact with volatile media such as alcohol, dimethyl pump, ether, etc., to avoid damage to the oil cupPneumatic and Hydraulic hand pumpsThe Pneumatic and Hydraulic hand-held pumps are both used in conjunction with the DPG210 digital pressure gauge. It is a fast pressure source. It can easily achieve vacuum and positive pressure by adjusting the pressure and vacuum valve. It is suitable for calibrating various differential pressure, vacuum, pressure vacuum and pressure meters. It can also be used as the above-mentioned meters. Pressure vacuum source. It is portable, light in weight, light in operation, easy to carry and use, and can be used with pressure and vacuum instruments. Ranges lower than 500 psi are for the Pneumatic hand pump and ranges higher than 500 psi are for the Hydraulic hand pump.The pressure fine-tuning handle is designed in structure, and the output pressure can be easily changed by rotating the fine-tuning handle. In addition, there is a high-pressure hose connection to be calibrated meter, output port connection standard meter. The hand-held pressure pump can be carried to the site and directly connected with the instrument to be calibrated, and the calibration is quick and simple. It is used to verify the pressure measuring instruments installed on site and various pressure instruments used in the control room. It can also provide a pressure source for the factory calibration of pressure measuring instruments.▪Output pressure:o Pneumatic (Ranges 100-500 psi): -13.78~595 psio Hydraulic (Ranges >500): 0~10007 psi▪Working environment:o Temperature: 0-40℃ (0-104℉)▪Threaded interface: ¼ NPT▪Weight: 2.0KG▪High pressure hose connector thread: ¼ NPT internal thread INSTRUCTIONS:▪After connecting the meter, close the pressure relief valve, and then hold the handle to start pressing (just a light hold with your hand)▪Push the pressure vacuum valve from one side of the reversing mark "V" to the other side to easily achieve vacuum; push the pressure vacuum valve from one side of the reversing mark "P" to the other side to easily achieve positive pressure▪In order to obtain an accurate pressure value during positive pressure, it can be achieved bya fine-tuner in a small range.▪After the pressure is suppressed, first release the pressure through the pressure relief valve, and then remove the meter.PRECAUTION:During the calibration process, attention should be paid to keeping all connections sealed. After calibration, the pressure relief valve must be rotated to release the pressure before disassembling the instrument, otherwise the instrument may be damaged.For the Hydraulic pump: Before using the pressure pump, unscrew the breather, fill it with a proper amount of oil (such as 1/2 cylinder of special oil), then tighten the breather, hold it firmly, loosen the handle, and drive out the gas in the cylinder for use. **************Servicing North America:U.S.A. Omega Engineering, Inc.Headquarters: T oll-Free: 1-800-826-6342 (USA & Canada only)Customer Service: 1-800-622-2378 (USA & Canada only) Engineering Service: 1-800-872-9436 (USA & Canada only)Tel: (203) 359-1660 Fax: (203) 359-7700e-mail:**************For Other Locations Visit /worldwideThe information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.WARRANTY/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outsideor vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, eitherLIMITATION OF LIABILITY: The remedies of purchaser setforth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component”under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY /D ISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS / INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR)NUM BER FROM OMEGA’SCUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence.The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:1.Purchase Order number under which the product was PURCHASED,2.Model and serial number of the product under warranty, and3.Repair instructions and/or specific problems relative to the product.of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moistureverbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED.FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:1.Purchase Order number to cover the COST of therepair,2.Model and serial number of the product, and3.Repair instructions and/or specific problems relative to the product.OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering. OMEGA is a trademark of OMEGA ENGINEERING, INC.© Copyright 2018 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.。

71 +44 (0)161 777 6611OMEGASCOPE®Handheld Infrared ThermometerLoaded with Features. New DistanceMeasurement Option Available!Shown close to actual size4 “AA” Lithium batteries includedShown with probe model 88006K-IEC,£77.05, sold separatelyCAUTION! – This product is not intended for medical use or use on humansPatents issued and pending on many aspects of this devicePATENTEDFREE SOFTWAREINCLUDEDOMEGASCOPE ®OS533E£369Other models availablestarting at £198N e w !B u i l t -I n Di s t a n c e M e a s u r e m e n t O p t i o n A v a i l a b l e !V i s i t o m e g a .c o .u kI N F R A R E D S72Rugged, High-Performance Design ߜBuilt-In Patented Laser Sighting is Switchable Between Laser Dot or Circle PatternsߜThe Laser Can be Flashing or ContinuousߜNew Series Includes Models with High-Performance, General Purpose, Close Focus, and High Resolution ߜModels Available with Temperature Ranges from -23 to 871°C ߜEmissivity Adjustablefrom 0.1 to 1.00 in 0.01 Steps ߜDistance Measuring Option—Either Field Mountable or Built-In (0.9 and 9 m Range)ߜDigital Video Camera Option Available ߜBacklit LCD DisplayߜDual Digital Display Indicates Current with Min, Max, Average, or Difference Temperatures ߜ°C/°F Selectableߜ1 mV/Degree Analogue Output Standard ߜRS232 Output Models Include FREE Data Logging Software ߜAudible and Visible Alarms ߜIntegral Tripod MountߜType K Thermocouple Input Available ߜTemperature Data Storage Available ߜElectronic Trigger Lock ߜLast Temperature RecallߜAll Models Include Built-In LaserSighting, Display and Lens Protective Bumpers, Wrist Strap, Soft Carrying Case, 4 “AA” Lithium Batteries, and User’s Manual with Emissivity Reference ChartOMEGASCOPE ®Unmatched Performance, Features,and ValueBacklit LCD Display High Alarm Icon Emissivity Setting Backlight Icon °C or °F UnitsTemperature Reading Function Key/Scrolling ▼For Decrementing Data;For Changing Units of Measure °F/°C or Ft/m Locks the Trigger/Enables/Disables Alarm▲For Incrementing Data;For Turning the DisplayBacklight On/OffG H I J Shown actual sizePatents issued and pending on many aspects of this device including but not limited to laser circle and distance measurement.PATENTED73 +44 (0)161 777 6611OMEGASCOPE ®Handheld Infrared ThermometerSeries Field of ViewOS533E and OS533E-DMOS530LE, OS530LE-DM, OS532E and OS532E-DMOS530LE-CF, OS533E-CFand OS534E-CFOS534E and OS534E-DMOMEGACARE SM extended warranty programme is available for models shown on this page. Ask your sales representative for full details when placing an order.OMEGACARE SM covers parts, labour and equivalent loan instrument.For DistanceMeasurement and Digital/Video Camera Options, Please See Page 71.F R E E d at a l o g g i n g s o f t w a r e i n c l u d e d w i t h m o s t m o d e l s .P l e a s e c o n s u l t s a l e s o r v i s i t om e g a .c o.u kA l l m o d e ls a v a i l a b l e w i t h b u i lt -i n d i s t a n c e m e a s u r i n g o p t i o n .C o n s u l t s a l e s f o r m o r e i n fo r m a t i o n .Model OS533E-DM with built-in distance measuring option, shown smaller than actual size, £419Probe sold separately Model 88006K-IEC, £77.054 “AA” lithium batteries and/or one 9 V battery includedBUILT-IN DISTANCE MEASURING OPTION +44 (0)161 777 6611 74HH-DM field installable distance-measuring meter, £50.25, and lightweight tripod with carrying case, £30.15, sold separately.Shown smaller than actual size.std * Or 1.7°C, whichever is greater.Ordering Examples: OS530LE , handheld infrared thermometer with built-in Laser Circle to Dot Switchable TM feature and thermocouple input, plus OCW-3,OMEGACARE SM 3-year extended warranty, £198 + 58 = £256.OS532E , handheld infrared thermometer with built-in Laser Circle to Dot Switchable TM feature and thermocouple input, plus OCW-3, OMEGACARE SM 3-year extended warranty, £302 + 92 = £394.OS534E-CF, close-focus handheld infrared thermometer with built-in Laser Circle to Dot Switchable TM feature, thermocouple input and RS232 output, plus OCW-3OMEGACARE SM 3-year extended warranty, £436 + 109 = £545.。

HHF-312Mini Anemometer-PsychrometerWith Compass And Memorye-mail:**************For latest product manuals:Shop online at SMUser’s Guide***********************Servicing North America:U.S.A.:Omega Engineering, Inc., One Omega Drive, P.O. Box 4047 S tamford, CT 06907-0047 USAToll-Free: 1-800-826-6342 (USA & Canada only)Customer Service: 1-800-622-2378 (USA & Canada only)Engineering Service: 1-800-872-9436 (USA & Canada only)Tel: (203) 359-1660 Fax: (203) 359-7700e-mail:**************For Other Locations Visit /worldwideThe information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.HHF-312MINI ANEMOMETER-PSYCHROMETER WITH COMPASS AND MEMORYUSER’S MANUALPlease read this manual carefully and thoroughly before using this product.TABLE OF CONTENTSIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 –3 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 What’s In the Package . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 –5 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Activate Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . .6 –13 Measuring Air/Wind Speed and Temperatures . .7 –9Displaying Min/Max/Avg Air and Wind Speeds . .9 –10Measuring Relative Humidity (RH) . . . . . . . . . . . . .10Measuring Barometric Pressure . . . . . . . . . . . . . . .10Storing and Recalling Records . . . . . . . . . . . .11 –12Using and Calibrating the Compass . . . . . . . .12 –13 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 –14 Maintenance Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 INTRODUCTIONThank you for purchasing OMEGA’s HHF-312 Mini-Anemometer-Psychrometer with Compass and Memory. Please read this user’s manual carefully and thoroughly before using the product.2The HHF-312is a one-piece vane anemometer-psychrometer that can measure all parameters needed to monitor environmental conditions indoors or track weather conditions outdoors.KEY FEATURES• Measures:Ambient temperatureDew Point and Wet Bulb temperaturesWind Chill Index (WCI)Air/wind speed and directionRelative humidity (RH)Barometric pressure• Stores/recalls 20 pairs of readings• All temperatures displayable in °F (default) or °C• Five available air/wind speed units: ft./min, mph, m/sec, km/hr, knots• Min, Max and Avg session values for air/wind speed• Barometric pressure readings available in kPa or mbar• Large backlit dual readout LCD• 5-minute Auto Power Off• Small and light enough for one-handed operation• Includes vane and sensor cap with wrist strap• Tripod mount• CE and RoHS approved• 1 year limited warranty3WHAT’S IN THE PACKAGEThe meter comes in a blister pack with a “CR2032” button cell pre-installed in the battery compartment. A hard copy of this user’s manual is inside the blister card. PRODUCT OVERVIEWFig. 1 below shows all controls, indicators and physical structures of the HHF-312,as well as the location of the battery compartment. Fig. 2 shows all possible indications on the meter’s LCD.Fig. 1. The controls,indicators andphysical structuresof the HHF-312A. Vane and sensor protection capB. VaneC. Temperature-humidity sensorD. LCDE. KeypadF. Battery compartmentG. Wrist strapH. Threaded tripod mounting hole4ABCDE G FHA. Air/windspeed mode indicator B. RH mode indicator C. Barometric pressure mode indicator D. Air/windspeedsessionvalue indicatorsE. Air/wind speed unitsF. Barometric pressure unitsG. RH unitH. Temperature units I. Lower readoutJ. Wind Chill Index, Dew Point and Wet Bulb indicators K. Measurement HOLD indicator L. Memory pointer M. Memory counterN. Memory recall mode indicator O. Low battery indicator P . CompassQ. Bearing readout R. Upper readout5Fig. 2.All possible display indicationsQ R A IK JB C D O L E P HG F M NSETUP INSTRUCTIONSACTIVATE BATTERY1. Turn the meter over and use your thumbs or a coin to turn the battery compartment cover (Fig. 1, Callout F) clockwise 30 degrees, in the direction marked OPEN .2. Pull and discard the tab under the pre-installed battery.3. Replace the battery compartment cover and turn it counterclockwise 30 degrees until it snaps shut.Complete Setup by carefully removing the plastic film protecting the LCD.OPERATING INSTRUCTIONSTo power on the HHF-312,press the red button. The LCD will illuminate with the backlight on and show all possible display indications for 2 seconds. The unit will then automatically enter the measurement mode in which it was operating when it powered off. The backlight will turn off after 15 seconds if nofront-panel button is pressed during that period. Pressing any button begins another 15 seconds of backlight.To power off the HHF-312,press and hold thebutton for at least 2 seconds.To change measurement mode, start by pressing the MODE button. This will cause the icon of the current mode to begin flashing on the top line. Then press the SET button once or twice,until the icon of the mode you want begins flashing on the top line.The figure below shows the three measurement modes in their sequence of selection using the SET button.6When the icon of the mode you want appears, flashing, on the top line, press the MODE button once to stop it from flashing. Doing this will cause one or more measurement unit icons below to begin flashing. Press the MODE button again to stop those icons from flashing. This causes the meter to enter real-time measurement mode for the chosen parameter (air/wind speed, RH or barometric pressure).To hold any pair of measurements(“freeze” the readouts), briefly press (but do not hold) the button (which has HOLD stenciled above it). To release the hold and resume displaying real-time values, briefly press the button again. This function is very useful for making measurements in low light or when the source of air or wind is above your head, below your knees, or around a corner. You can make a measurement, hold it, and then read the display up to 5 minutes later after positioning the LCD at eye level.Why do you have only 5 minutes? To extend battery life, the HHF-312automatically powers itself off following any 5-minute period in which no front-panel button is pressed. MEASURING AIR/WIND SPEED AND TEMPERATURESTo make an air/wind speed measurement, unsnap the vane and sensor protection cap (Fig. 1, Callout A) and let it hang from the unit by the wrist strap. Turn the vane at the top of the unit perpendicular to the source of air or wind. It makes no difference whether the front of back of the vane faces the flow. The measured air/wind speed value will appear on the upper readout. Allow a few seconds for the reading to stabilize.The HHF-312’s factory default air/wind speed measurement unit is feet/minute (ft/m). To change the air speed unit, begin by pressing the UNIT button. This will cause ft/m to begin flashing on the right side of the upper readout (Fig. 2, Callout E). Then, within 15 seconds (before the backlight extinguishes), press the SET7button. This will change the flashing ft/m term to mph, also flashing. Press the SET button again and mph will turn to knots. Press it again to change knots to m/s.Press the SET button as many times asnecessary until the air/wind speed unityou prefer appears, flashing, at theright of the upper readout. To save thisunit, press the UNIT button. The figureat right shows the five availableair/wind speed units in their selectionsequence.When you press the UNIT button tosave your preferred air/wind speed unit, °F—the HHF-312 factory default temperature measurement unit—will begin flashing in the lower right corner of the LCD. To keep °F as the temperature measurement unit, begin by pressing the UNIT button. This will cause °F to stop flashing and the meter to resume displaying real-time air/wind speed and temperature measurements. To change the temperature unit to °C, press the SET button, followed by the UNIT button to save the selection. The HHF-312will “remember” the air/wind speed and temperature units (as well as its operating mode and other selected units and parameters) in use each time it powers off and will resume operating in that mode and with those units upon restart. So if you always use ft/m and °F for air/wind speed and temperature measurements, you need not perform any of the above steps. And if you always use the same air/wind speed and temperature units (other than ft/m and °F), you need only perform the above procedure once. Unlike many instruments, changing the battery does not reset all units to their factory default.As mentioned earlier, the HHF-312automatically begins measuring and displaying ambient temperature upon startup. To display other temperatures whose calculation includes the8effect of wind speed or humidity(Wind Chill Index, or Wet Bulb and Dew Point temperatures, respectively), begin by pressing the MODE button with the meter operating in air/wind speed mode (with VEL appearing on the top line of the LCD). This will cause VEL to begin flashing. Then press the MODE button again. On meters that have come fresh from the factory, this will cause the three terms WCI, DEW and WET to appear, flashing, above the lower readout (Fig. 2, Callout J). Within 15 seconds (before the backlight turns off), press the SET button as many times as necessary until the temperature you want appears by itself, flashing, above the lower readout. Note that the temperature below changes with each press of the SET button. To save the temperature you want, press the MODE button while its abbreviated term (WCI, DEW or WET) is flashing.As with air/wind speed units, the type of temperature you select and save becomes the display default until you change it. When operating in Wind Chill Index mode, make sure the vane is perpendicular to the wind direction.DISPLAYING MIN/MAX/AVG AIRAND WIND SPEEDSThe HHF-312keeps track of the maximum and minimum (fastest and slowest) and average air speed values recorded over a measurement “session”—the period of time during which you measure speeds at multiple locations and/or speeds of multiple devices. The session begins when you power on the HHF-312;it typically ends 5 minutes after you finish making measurements with the activation of the APO function.The value of being able to quickly determine, for example, the fastest and slowest fans of a group should be obvious.To display the maximum, minimum or average air/wind speed during a measurement session, press the DISP button as many times as necessary until the label of the desired value (Max, Min9or Avg) appears above the upperreadout (Fig. 2, Callout D). The figureat right shows the three availablesession parameters in their selectionsequence relative to real-timemeasurement mode.MEASURING RELATIVEHUMIDITY (RH)To enter RH mode, press the SETbutton with VEL flashing on the top line of the LCD. This will change the flashing term to RH. To stop RH from flashing, press the MODE button.The HHF-312will now display real-time RH values on the upper readout and the current Wind Chill Index or Dew Point or Wet Bulb temperature on the lower readout. To change the unit of temperature measurement to or from °F or °C, press the SET button, followed by the UNIT button to save the selection. To leave the unit unchanged, press the UNIT button. MEASURING BAROMETRIC PRESSURETo enter barometric pressure mode, press the SET button with RH flashing on the top line of the LCD. This will change the flashing term to BP. To stop BP from flashing, press the MODE button. You can now enter your preference for using the metric or Imperial unit for barometric pressure—the kilopascal (kPa) or millibar (mBAR), respectively. To change kPa to mBAR, begin by pressing the UNIT button. This will cause kPa to begin flashing between the upper and lower readouts (Fig. 2, Callout F). Then press the SET button, followed by the UNIT button to save the selection. Saving the selected barometric pressure unit will cause the default temperature unit at the right of the lower readout to begin flashing. To change the unit, press the SET button, followed by the UNIT button to save the selection. To leave the unit unchanged, press the UNIT button.10STORING AND RECALLING RECORDSThe HHF-312can store up to 20 pairs of the measurements shown on the upper and lower readouts for later recall in chronological order (the order in which they were stored).To store the pair of readings currently on-screen, press the REC button. The readings will be stored at the location indicated by the memory counter (Fig. 2, Callout M) above the memory pointer JOB(Callout L). Note that each press of the REC button increments the memory counter by 1. The HHF-312’s memory is nonvolatile, so stored pairs of readings (collectively called a Record) are retained when the meter powers off, and also after the battery is changed.To recall one or more readings, make sure the meter is operating in one of the three real-time measurement modes (air/wind speed, RH or barometric pressure), with no terms flashing on screen. Then press the RCL/DEL button once. This will replace the term JOB by the memory recall mode indicator Rec(Fig. 2, Callout N) above. Both readouts will switch to displaying the oldest record saved (the pair of readings in memory location 01).To display the next-newest record, press the SET button. Continue pressing the SET button to sequentially display all stored records in the order in which they were saved. Pressing the SET button with the newest record on-screen resets the memory counter to 01. To exit memory recall mode, briefly press (but do not hold) the RCL/DEL button. This will replace the term Rec above the storage location number by the term JOB below it.When the HHF-312’s20-record memory is full, pressing the REC button will not store the current pair of readings—in other words, the memory is not over-writing. To store readings with a full memory, you must delete one or more records manually.11To delete an individual record, first make sure the meter is operating in one of the three real-time measurement modes. Then,1. Press the RCL/DEL button to enter memory recall mode, with Rec replacing JOB at the lower left of the LCD.2. Press the SET button repeatedly until the record to be deleted is on-screen, with its memory location number shown below Rec.3. Briefly press (but do not hold) the REC button to delete the record. This will change Rec to JOB(indicating exit from memory recall mode) and change the readouts to the next-newest pair of stored readings. If no newer readings have been stored, the readouts will switch to the next-oldest pair of readings.To bulk-erase the memory (delete all records), press and hold the REC button for at least 2 seconds with the meter operating in one of its three real-time measurement modes. This will reset the memory counter to 01.USING AND CALIBRATING THE COMPASSThe HHF-312is equipped with a magnetometer (electronic compass) capable of displaying direction within 45 degrees using the standard terms N, NE, E, SE, S, SW, W and NW. Bearings are simultaneously shown in two places: in the upper left corner of the LCD (Fig. 2, Callout Q), and below it at the end of an arrow pointing in that direction (Callout P).To provide accurate readings, the compass should be calibrated after each battery replacement. To begin the calibration process, take the meter outdoors to minimize the effects of indoor electromagnetic interference (EMI). Then:1. Use the MODE and SET buttons to place the meter in air/wind speed measurement mode, with VEL visible but not flashing on the top line of the LCD.122. Press and hold the RCL/DEL button until OH appears on the upper readout and OL appears on the lower readout.3. Holding the meter facing up in front of you, rotate your body through three full 360° turns.4. Press and hold the RCL/DEL button until OH and OL are replaced by real-time air/wind speed and temperature readings on the upper and lower readouts. SPECIFICATIONSAir/Wind Speed Measurement Range:80 to 5910 ft./min (0.4 to 30 m/s)Air/Wind Speed Measurement Accuracy:±(3% of full-scale value + 40 ft./min (0.2 m/s))Air/Wind Speed Measurement Resolution: 1 ft./min (0.1 m/s) Temperature Measurement Range: -4° to 158°F (-20° to 70°C) Temperature Measurement Accuracy: ±1.8°F (1°C) from 14° to 104°F (-10° to 40°C); ±3.6°F (2°C) elsewhere in range Temperature Measurement Resolution: 0.1°Relative Humidity (RH) Measurement Range: 0 to 100%RH Measurement Accuracy/Resolution: ±3% from 20 to 80%RH;±5% elsewhere/ 0.1%RHDew Point Measurement Range: -67° to 122°F (-55° to 50°C) Wet Bulb Measurement Range: -31° to 122°F (-35° to 50°C) Barometric Pressure Measurement Range:30 to 120 kPa (300 to 1200 mbar)Barometric Pressure Measurement Accuracy/Resolution:±1 kPa (0.1 mbar), from 70 to 115 kPa (700 to 1150 mbar);±2 kPa (0.2 mbar) elsewhere in rangeResponse Time: <2 seconds for air/wind speed13Display Size: 1.34 x 0.94 in. (34 x 24mm)Auto Power Off Trigger: 5 minutes of front-panel inactivity Backlight Duration: 15 seconds (without front-panel activity) Current Consumption: <3 mA with backlight off,<10 mA with backlight onOperating Temperature: -4°to 158°F (-20° to 70°C)@ 5 to 95%RH, non-condensingStorage Temperature (without battery): -22° to 140°F(-30° to 60°C) @ <85%RHDimensions: 5.83 x 2.08 x 0.87 in. (148 x 53 x 22mm) Weight (without battery): 2.93 oz. (83g)Power Source: (1) “CR2032” battery (pre-installed) MAINTENANCE TIPSicon appears on the left side of the LCD (Fig. 2,(although measurements will remain valid for several hours after the icon first appears). To change the battery, follow the Setup Instructions on p. 6.Remove the battery if you do not expect to use the HHF-312 for an extended period of time (months or years).Replace the vane and sensor protection cap (Fig. 1, Callout A) following each measurement session.Do not drop or disassemble the unit or immerse it in water.Do not operate the HHF-312:• Near a magnet• Near equipment like arc welders and induction heaters that generate an electromagnetic field14• In environments full of water vapor, dust or static electricityTo clean the housing or LCD, use a dry or damp cloth. Avoid using chemical cleaners.15FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:1. P urchase Order number under which the product was PURCHASED,2. M odel and serial number of the product under warranty, and 3. R epair instructions and/or specific problems relative to the product.FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA:1. Purchase Order number to cover the COST of the repair,2. M odel and serial number of the product, and 3. R epair instructions and/or specific problems relative to the product.OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.OMEGA is a registered trademark of OMEGA ENGINEERING, INC.© Copyright 2015 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s Warranty adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER W ARRANTIES OR REPRESENTATIONS OF ANY KIND W HATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED W ARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.CONDIT IONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.RETURN REQUESTS/INQUIRIESDirect all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RET URNING ANY PRODUCT (S) T O OMEGA, PURCHASER MUST OBT AIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER T O AVOID PROCESSING DELAYS). T he assigned AR number should then be marked on the outside of the return package and on any correspondence. The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.Where Do I Find Everything I Need for Process Measurement and Control?OMEGA…Of Course!Shop online at SMTEMPERATUREM U T hermocouple, RTD & Thermistor Probes, Connectors, Panels &AssembliesM U W ire: Thermocouple, RTD &ThermistorM U C alibrators & Ice Point References M U R ecorders, Controllers & Process MonitorsM U I nfrared Pyrometers PRESSURE, STRAIN AND FORCEM U Transducers & Strain GagesM U Load Cells & Pressure GagesM U Displacement TransducersM U Instrumentation & Accessories FLOW/LEVELM U R otameters, Gas Mass Flowmeters & Flow ComputersM U Air Velocity IndicatorsM U Turbine/Paddlewheel SystemsM U Totalizers & Batch ControllerspH/CONDUCTIVITYM U p H Electrodes, Testers &AccessoriesM U Benchtop/Laboratory MetersM U C ontrollers, Calibrators, Simulators & PumpsM U I ndustrial pH & Conductivity Equipment DATA ACQUISITIONM U D ata Acquisition & Engineering SoftwareM U C ommunications-Based Acquisition SystemsM U P lug-in Cards for Apple, IBM & CompatiblesM U Data Logging SystemsM U Recorders, Printers & Plotters HEATERSM U Heating CableM U Cartridge & Strip HeatersM U Immersion & Band HeatersM U Flexible HeatersM U Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL M U M etering & ControlInstrumentationM U RefractometersM U Pumps & TubingM U Air, Soil & Water MonitorsM U I ndustrial Water & Wastewater TreatmentM U p H, Conductivity & Dissolved Oxygen InstrumentsM5504/1015。