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T ELEDYNE H ASTINGS I NSTRUMENTS HFM-205 Flow MeterHFC-207 Flow ControllerHIGH CAPACITY FLOW METERSAND CONTROLLERSFEATURES• ± 1% full scale accuracy1• Input Power: +/- 15 VDC or +24 VDC(specify when ordering)• Available Flow Ranges:0 - 1000 slm up to 2500 slm (N2 Equivalent)• NIST Traceable Calibration CertificateAPPLICATIONS• Leak testing• Flame Spray• AerospaceBENEFITS• Excellent Stability• Proven Reliability• Outstanding Zero StabilityDownload a free QR reader from your smartphone app store FlowMetersandFlowControllersDESCRIPTIONThe Teledyne Hastings Instruments (THI) Model HFMMass Flowmeter and HFC Mass Flow Controller representover 65 years of experience in designing and manufacturingreliable, high quality mass flow instruments.The HFM/HFC Series of flow instruments is based on amodular design. At the heart of each instrument is an insu-lated thermal transfer sensor which provides enhanced zerostability. The HFC also features a two-stage, pilot-operatedcontrol valve.The instrument’s inherent linear response to flow changesand THI's long-proven reputation for quality, result in thefinest flow meters and flow controllers available today.Instruments are normally calibrated with the appropriatestandard calibration gas (air), then a gas conversion factor isused to adjust the output the intended gas. Special calibra-tion for other gases, such as oxygen, helium and argon, areavailable upon special request.Specifications and StandardsCOMMON SPECIFICATIONS HFM-205/HFC-207Accuracy 1 ± 1.0% of F.S. Repeatability ± 0.05% of F.S.Maximum Operating Pressure 500 psiPressure Coefficient -.0067% /psi Leak Integrity< 1x10-9 sccs HeTemperature Coefficient (zero) Temperature Coefficient (span) Zero ±.035%C of F.S. (0-60°C)Span ± .05%C of Rdg (0-60°C) Standard Output Optional Output 0 - 5 VDC4 - 20 mA, 0 - 20 mA Connector (± 15 VDC) Connector (+ 24 VDC)15 - pin subminiature D 9 - pin subminiature DSPECIFICATIONS HFM-205Power Requirements (±15 V) Power Requirements (+24 V) ± (14-16) VDC @ ±30mA (< 1 Watt) (14 - 32) VDC (< 1.9 Watt) Wetted Materials 302 SS, 316 SS, Nickel 200, Viton® Weight (approx.)8.1 lb (3.65 kg)Options:Fittings –VCR ®,VCO ®, Swagelok ®,, Seals - Kalrez Neoprene Buna-N Output - 0 - 5 VDC 4 - 20 mA 0 - 20 mAEMC:EN 61326-1AccessoriesPower Supplies available with; Integral Flow Totalizer Alarm Set Points Interconnecting cablesTHCD-100 Power Supply & DisplayHastings Instruments reserves the right to change or modify the design of its equipment without any obligation to provide notification of change or intent to change.Viton® is a registered trademark of DuPont Performance Elastomers Kalrez® Is a registered trademark of DuPont Dow Elastomers VCR® is a registered trademark of Swagelok Company.1See Product Manual for critical information on instrument accuracy and the use of GCFs (gas con-version factors). Stated accuracy is for nitrogen or other gas specific calibration and use with this gas only.SPECIFICATIONS HFC-207Power Requirements (±15 V) Power Requirements (+24 V) ± (14-16) VDC @ +60/-185 (<3 Watt) (14 - 32) VDC (< 3 Watt) Wetted Materials 302 SS, 316 SS, Nickel 200, Viton® Kalrez (Valve Seat)Weight (approx.)14.9 lb (6.76 kg)Setpoint Input 0-5 VDC (Std) /4-20mA (optional)HFC-207 Outline DrawingSelection Chart** 0-5 VDC InputPB-184_07/11 © Teledyne 2011 All Rights Reserved.Telephone: (757) 723-6531 Toll Free: (800) 950-2468 Fax: (757) 723-3925World Wide Web: E-mail:*********************************P.O. Box 1436Hampton, VA 23661。
JMDL-32xxAT 智能单点位移计长沙金码测控科技股份有限公司www 产品使用手册版本：V3.0修订日期：2023年4月版权声明 本文件所含信息归长沙金码测控科技股份有限公司所有，文件中所有信息、数据、设计以及所含图样均属长沙金码测控科技股份有限公司所有，未经书面许可，不得以任何形式（包括影印或其他方式）翻印或复制，间接或直接透露给外界个人或团体。
本仪器的安装、维护、操作需由专业技术人员进行，长沙金码测控科技股份有限公司对本产品拥有更改的权利。
长沙金码测控科技股份有限公司版权所有一. 产品概述二.型号及主要技术参数指标三.工作原理四.埋设安装五.记录存档六.传感器接线七.产品维护与其它注意事项1111223目录欢迎使用长沙金码测控科技股份有限公司的产品！您拥有金码传感器及其检测设备的同时，就标志着您掌握了最先进的工程检测手段和享有本公司的优质服务，使用本产品之前请详细阅读本说明书或来电垂询，谢谢！JMDL32xxAT单点位移计是一种埋入式电感调频类智能位移计。
适用于隧道岩体变形，大坝基岩变形，边坡或基坑面的滑移等工程项目的位移测试。
它由法兰、电测位移传感器、拉杆及锚头、PVC管等组成整体。
如下图所示，电测位移传感器上接法兰盘，下接拉杆并套PVC管、锚头。
1.使用温度范围：-30℃～80℃2.最大允许误差：±0.5%F·S电感调频位移计是利用电磁感应原理，与拉杆固接的导磁体活塞杆插入螺管线圈并可来回移动，线圈的电感量与导磁体活塞杆插入线圈的长度有关。
当发生位移时，将引起线圈电感量的变化，电感调频电路将线圈电感量的变化变换成频率信号，通过读数仪即可显示位移值。
将位移计整体埋设。
如图1所示，锚头锚固到基岩，位移计本体锚固到结构物表面，导线从位移计顶部引出。
当锚头和位移计本体之间发生拉伸或着压缩变化时，使传感器线圈与拉杆之间发生相对滑移，输出信号，获取位移读数，实现位移观测目的。
©KROHNE 03/20027.02425.21.00GRElectromagneticFlowmetersVariable area flowmetersVortex flowmetersFlow controllersElectromagnetic flowmetersUltrasonic flowmetersMass flowmetersLevel measuring instrumentsCommunications technologyEngineering systems & solutionsSwitches,counters,displays and recordersHeat meteringPressure and temperatureApplicationKROHNE electromagnetic flowmeters are to be found in many industrial sectors and applications.Just a small selection:G Chemical industry G Water and wastewaterGHydraulic transport,liquid products with up to 50% solids content G Paper and woodpulp production G Pharmaceutical G Food and beveragesG Filling and dispensing processes G Highly abrasive slurriesG High-pressure industrial processes GPartially filled pipelinesand many,many other applications in other industriesFIT and FORGET !All electromagnetic flowmeters are delivered ready for operation.Install the flowmeter in the pipeline,make the electrical connection,that's it.Always one step ahead with KROHNEThis highly accurate measurement technology is available with integrally or remote mounted converter,some with measuring errors of less than 0.2% of the measured value.The primary head is installed in the pipeline,while the signal converter for signal processing is remote mounted in a field housing or 19" plug-in unit.In the integral system,the signal converter is mounted in a housing with high protection category directly on the primary head.With meter sizes of DN2.5 - 3000 / 1/10" - 120",measurements can be carried out from 2l/h to 300 000m3/hand more.Most of the devices are approved for use in hazardous locations.Various materials are available for the measuring tube,liner and electrodes of the flowmeters for most applications. Electromagnetic flowmetersProduction and calibrationAll electromagnetic flowmeters from KROHNE meet the requirements of CE directives and EMC guidelines.Fabrication and production shops are certified to ISO 9001.At KROHNE,all electromagnetic flowmeters are calibrated by direct comparison of volumes,the most accurate calibration method of all.The KROHNE calibration rigs are the world's biggest and most accurate,and are accredited to EN17 025.Measurement uncertainty is less than 0.013% of themeasured value for meter sizes up to DN 3000 / 120" and above.7Electromagnetic flowmeters >0.05 µS /c m >5 µS /c m >20 µS /c m >50 µS /c mD N 2.5,4,6 1/10”,1/6”,1/4”D N 10 3/8”D N 32 11/2”Signal converterDatenblätterF l a n g e c o n n e c t i o n s F l a n g e l e s s ‘s a n d w i c h ’d e s i g n C h e m i c a l s W a t e r a n d s e w a g e P a r t i a l l y f i l l e d p i p e s P h a r m a c e u t i c a l s ,s a n i t a r y B a t c h i n g (1-10s )V e r y a b r a s i v e s l u r r i e s H i g h p r e s s u r e 2- o r 2 x 2-w i r e s y s t e mG e n e r a l p u r p o s e S a n i t a r y c o n n e c t i o n s H A R T ®/R S 485 (s t a n d a r d )P r o f i b u s P A H A R T ®/R S 485 (o p t i o n )H A R T ® (o p t i o n )O t h e r s o n r e q u e s t m Ao u t p u t ,2 w i r e c o n n e c t i o n ≤3 W ≤5 V A / ≤4.5 W ≤10 V A / ≤8 W ≤15 V A / ≤15 W ≤50 V A 2o r 2 x 2-w i r e s y s t e m 24,48,100 – 240 V A C ,48– 63 H z 24 V D C 24 V A C / D C 100 – 230 V A C ,48 –63 H z L i q u i d s ,p a s t e s S l u d g e a n d s l u r r i e s % s o l i d s /v o l u m e ≤3%S l u d g e a n d s l u r r i e s % s o l i d s /v o l u m e ≤5%S l u d g e a n d s l u r r i e s % s o l i d s /v o l u m e ≤30%P u l s a t i n g f l o w ,< 200 p u l s e s /m i n B a t c h i n g p r o c e s s > 1.5 s P a p e r a n d p u l p H y d r a u l i c t r a n s p o r t (o r e d r e s s i n g )o n l y I F C 090 K -C A P C a p a c i t i v e s i g n a l p i c k u p F ou n d a t i o n F i e l d B u s F A D N 251”D N 40 11/2”D N 502”D N 803”D N 1004”D N 1255”D N 1506”D N 2008”D N 25010”D N 30012”≤D N 1800≤72”≤D N 3000≤120”I S O f i t t i n g l e n g t h o n l y I F C 110 P F a n d I F C 210 E -P F P a r t i a l l y f i l l e d p i p e s ,AQUAFLUXECOFLUX 1000ALTOFLUX 2000ALTOFLUX 4000PROFIFLUX 5000VARIFLUX 6000ALTOFLUX 2W 2 wireBATCHFLUXCAPAFLUXTIDALFLUX partially filledALTOFLUX IFS 2005 FALTOFLUX IFS 4005 FALTOFLUX M 900IFC 010 K,FIFC 020 K,F ,EIFC 040 K 2 wireIFC 090 K,F IFC 090 K-CAP IFC 110 F IFC 110 PFIFC 210 E IFC 210 E-PFSC 150 FBatchflux IFC 012 KElectrical conductivitySizesConnectionsApplications (examples)Flow measurements (examples)Power supply Power consuptionInterfacesIFM 1080 KG Flangeless versionG Rugged measuring tube withstainless steel reinforced 080 KG Flanged connectionsG Steel housingµP-signal converter in plasticsIFM 4080 KG Flanged connectionsG Steel housingTeflon® PFA liner,reinforced withIFM 5080 KG Flangeless versionG Stainless steel housing The only precision flowmeter IFM 6080 KG Various sanitary/flangedconnectionsStainless steel housingG Precision flowmeterG With capacitive signal pickup(electrodes not in contact withG Flangeless versionG Rugged measuring tube withstainless steel reinforced G Flanged connectionsG Steel housingG Liner of Polypropylene,NSF-G Flanged connectionsG Steel housingG Teflon® PFA liner,reinforced withG Flangeless (sandwich) designG Stainless steel housingG The only precision flowmeter with G Flanged connectionsG Steel housingG Measuring tube made of Al2O3G Various sanitary/flanged connec-tions,stainless steel housingG FDA approved Teflon® PFA liner,G Designed for partially filled pipelinesG Excellent measuring accuracy,for low levels,through the integratedG IFC 010 K/IFC 020 K of integral design G IFC 010 F/IFC 020 F in field housing G IFC 020 E 19”plug-in version.G IFC 090 K of integral designG IFC 090 F in field housingG Signal processing by microprocessor,G Signal converter in field housingG Signal processing by microprocessor,outstanding interference rejection,G Signal converter in field housing for wall mounting G Signal processing by microprocessor,outstanding interference rejection,T o w e r h e i g h t 43 m e q u i v a l e n t t o 141 f t / n e t v o l u m e 350000 l i t r e s e q u i v a l e n t t o 95000 U S G a lPrecisionLM28 precision level switches control the flow volume and various computer-aided volume totalizersQmInlet run ≥10 ×DN (DN = meter size)©G The world’s largest and most accurate calibration rigGCalibration of flowmeters up to DN 3000 / 120”GCalibration by direct comparison of volumes,altogether the most accurate method GComparison measurements with so-called master meters are much less accurate and cannot be verifiedGThe volume measurement standards ofKROHNE calibration rigs have been calibrated by NMI,the Netherlands Standards Institute.Measurement uncertainty is less than 0.013% of the measured value.GKROHNE Altometer calibration rigs are accredited in conformity with EN 17 025.GCalibration accuracy is better than 99.97% of the measured value.GThe error of measurement of the calibration rigs is better by a factor of 10 than theaccuracy data of the flowmeter being tested.GAll flowmeters are calibrated underreference conditions,similar to EN 29 104.GAll calibration data are genuine and verifiable; documented in writing in the calibration reports,which are supplied together with each KROHNE flowmeter.An example is shown on the right.E r r o r o f m e a s u r e m e n t [% o f m e a s u r e d v a l u e ]Flow rate [m 3/h]0,50,402000400060008000100000,30,20,10,0-0,1-0,2-0,3-0,4-0,5+ 0.03%Accuracy inspires confidenceAt this flowrate,a typical public swimming-pool can be filled in less than 1 minute.Inaccuracy is less than 0.013% in terms of volume and less than 0.26 mm in terms of filling level (equal to the thickness of a single hair),based on an average pool depth of 2 metres.Flowmeters up to DN 3000/120”creates theKROHNE standardOutlet run ≥2 ×DN (DN =meter size)Volume flow rate Q max = 40 000 m 3/h= 11 m 3/sMeasuring Principle 3.1The induced voltage signal is picked up either by two measuring elec-trodes in conductive contact with the medium or indirectly bycapacitive coupling.A signal converter amplifies the signal and convertsit into a standard analog signal (e.g.4 to 20 mA) and a frequencysignal (e.g.1 pulse for every US gallon or cubic metre of mediumflowing through the measuring tube).To ensure that the voltage is not short-circuited by the pipe wall,themeasuring tube is made of an electrically insulating material or fittedwith an insulating liner.Measurement is largely independent of the flow profile and other prop-erties of the medium,such as pressure,temperature,viscosity,density,consistency,electrical conductivity,and electrode contamination.Measuring systemsThe electromagnetic flowmeter consists of a primary head,that isinstalled in the pipeline,and a signal converter.The compact design has the signal converter mounted directly on theprimary head.For systems with pulsed d.c.field the primary head field coils whichgenerate the magnetic field are energized by a pulsed direct currentfrom the signal converter.The measuring signal is a squarewave voltage of the same frequency.These systems feature extremely small measuring errors. Electromagnetic flowmeters measure the volume flow of electricallyconductive liquids and slurries.Measuring principleAn electric conductor,in this case the electrically conductive medium,passes through a magnetic field.The voltage U induced in this mediumis directly proportional to the mean flow velocity v.Magnetic inductionB (magnetic field strength) and the distance between electrodes D(nominal pipe diameter) are constant.K instrument constantB magnetic field strengthv mean flow velocityD electrode spacingThe volumetric flow rate qv can be calculated according toTherefore:q v=U x D xπ(4)K x B4The reducing angle (α) should not exceed 8°(equivalent to α/2 = 4°),otherwise measuring accuracy may be affected.If the reducing angle is greater,a straight inlet section must be fitted between reducing socket and primary head.Expanding sectionPressure Loss CalculationFor the expanding section,the optimum angle of expansion is α= 8°.ζat α= 8°d1/d2 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0ζ10.0180.0230.02550.0280.030.03080.03150.03230.0332Recommendations for installationSelection of meter sizeThe size of primary head should if possible be selected to provide a velocity of 2 to 3m/s or 6 to 9ft/sec.for the full-scale range. Minimum full-scale range is 0.5m/s or 1.5ft/sec.,maximum is 10 or 11m/s or 30 or 33ft/sec.,depending on flowmeter type.For fluids with a solids content,the velocity should be between 3 and 5m/s or 9 and 15ft/s to prevent deposits and minimize abrasion.Exact determination of flow velocityFor range setting purposes,the exact flow velocity can be determined using the flow table for each nominal pipe width.Example: v in m/sNominal pipe diameter DN150Desired measuring range200m3/hFrom the table we obtain for the flow velocity of 1m/sa flow rate of 63.617m3/h at DN150; for 200m3/hthe flow velocity v is:Example: v in ft/sNominal pipe diameter6”Desired measuring range1000 US GPMFrom the table we obtain for the flow velocity of 1ft/sa flow rate of 88.128 US GPM at 6”meter size;for 1000 US GPM the flow velocity v is:Flow tablesv = 1m/sMeter size Flow rate Meter size Flow rate DN mm m3/h DN mm m3/h2.50.017671250176.71 40.0452********.47 60.10179350346.36 100.28274400452.39 150.63617500706.86 20 1.131********.9 25 1.76717001385.4 32 2.89538001809.6 40 4.52399002209.2 507.068610002827.4 6511.94612004071.5 8018.09614005541.8 10028.27416007238.2 12544.17918009160.9 15063.617200011310 200113.10v = 1ft/sMeter size Flow rate Meter size Flow rate inch US GMP inch US GMP1/100.024********.801/80.03825012352.511/40.1530014479.813/80.3442516626.69 1/20.6120020979.21 3/4 1.3770241410.1 1 2.4480281919.211/4 3.8250322506.8 11/2 5.5080363172.6 29.7921403916.8 21/215.300485640.2 322.032567677.0 439.1686410027 561.2007212691 688.1288015667 8156.67Protection classes to IEC 529/EN 60529。
Yaxin-1303植物气孔计使用手册版本号：2017061501北京雅欣理仪科技有限公司北京市海淀区上地三街9号嘉华大厦F座707B室，100085电话：************62980353传真：************E-mail:***************目录目录一·仪器介绍...............................................................................................................................- 3 -二·原理与方法...........................................................................................................................- 4 -2.1基本原理........................................................................................................................- 4 -2.2蒸腾作用测定方法.......................................................................................................- 4 -2.2.1开路测量方式...................................................................................................- 5 -2.2.2闭路测量方式...................................................................................................- 5 -三·硬件介绍...............................................................................................................................- 6 -3.1主机 ................................................................................................................................- 6 -3.2手柄叶室........................................................................................................................- 7 -3.3 电源适配器...................................................................................................................- 8 -四·软件介绍.............................................................................................................................- 10 -五·主菜单介绍......................................................................................................................... - 11 -5.1开路测量（手动）..................................................................................................... - 11 -5.2开路测量（自动）..................................................................................................... - 11 -5.3闭路测量（手动）..................................................................................................... - 11 -5.4 RH-T曲线测量 ........................................................................................................... - 11 -5.5 数据管理.....................................................................................................................- 12 -5.6系统信息......................................................................................................................- 12 -5.7简明帮助......................................................................................................................- 12 -六·准备工作.............................................................................................................................- 13 -6.1充电 ..............................................................................................................................- 13 -6.2开/关机........................................................................................................................- 13 -6.3硬件连接......................................................................................................................- 13 -6.4键盘操作......................................................................................................................- 14 -6.5开/闭路气路连接 .......................................................................................................- 15 -6.6中英文系统切换 .........................................................................................................- 15 -七·数据测量.............................................................................................................................- 16 -7.1蒸腾速率测量 .............................................................................................................- 16 -7.1.1开路测量（手动） ........................................................................................- 16 -7.1.2开路动量（自动） ........................................................................................- 20 -7.1.3闭路测量（手动） ........................................................................................- 24 -7.2 RH-T曲线测量 ...........................................................................................................- 27 -7.2.1 实时监测环境中相对湿度...........................................................................- 27 -目录7.2.2 实时曲线算出蒸腾速率和气孔导度 ..........................................................- 29 -八·数据管理.............................................................................................................................- 35 -8.1数据传输......................................................................................................................- 35 -8.2数据删除......................................................................................................................- 38 -8.3数据复制到SD卡 .......................................................................................................- 39 -九·传输软件.............................................................................................................................- 40 -9.1数据上传......................................................................................................................- 40 -9.2查看数据......................................................................................................................- 40 -十·计算公式.............................................................................................................................- 43 -10.1蒸腾速率公式 ...........................................................................................................- 43 -10.2气孔导度公式 ...........................................................................................................- 44 -十一·维护与保养.....................................................................................................................- 45 -十二·技术参数.........................................................................................................................- 46 -十三·售后服务.........................................................................................................................- 48 -仪器介绍一·仪器介绍前言感谢选择北京雅欣理仪科技有限公司的产品。
使用说明书U-HSX2300-MICN2 1.产品介绍人工智能温控器/调节仪采用真正的人工智能算式，仪表启动自整定功能，可以根据被控对象的特性，自动寻找最优参数以达到很好的控制效果，无需人工整定参数。
控温精度基本达±0.1℃，无超调、欠调，达国际先进水平。
可与各类传感器、变送器配合使用，实现对温度、压力、液位、容量、力等物理量的测量显示，并配合各种执行器对电加热设备和电磁、电动阀进行PID调节和控制、报警控制、数据采集等功能。
适用于工业炉，电炉，烘箱，试验设备，制鞋机械，注塑机械，包装机械，食品机械，印刷机械等行业。
仪表具有多种输入类型，一台仪表可以配接不同的输入信号，大大减少了备表的数量。
仪表可选择单组PID控制或两组PID运算控制（如加热/冷却控制系统）。
PID控制输出可选：电流、电压、SSR固态继电器、单/三相SCR过零触发、阀门正反转控制等多种方式。
可附加位式报警控制、模拟变送输出、RS485/232通讯等功能。
2.技术参数表1输入输入信号电流电压电阻电偶输入阻抗≤250Ω≥500KΩ输入电流最大限制30mA输入电压最大限制＜6V输出输出信号电流电压继电器24V配电或馈电输出时允许负载≤500Ω≥250KΩ（注：需要更高负载能力时须更换模块）AC220V/0.5A（小）DC24V/0.5A（小）AC220V/2A（大）DC24V/2A（大）见备注≤30mA调节输出控制输出继电器单相可控硅双相可控硅固态继电器输出负载AC220V/0.5A（小）DC24V/0.5A（小）AC220V/2A（大）DC24V/2A（大）见备注AC660V/0.1AAC600V/5A（如果直接驱动必须注明）DC5-24V/30mA综合参数测量精度0.2%FS±1字设定方式面板轻触式按键数字设定；参数设定值密码锁定；设定值断电永久保存。
显示方式-1999～9999测量值显示，设定值显示，外给定值显示，0～100.0%阀位反馈值显示，0～100%输出量显示，发光二级管工作状态显示使用环境环境温度：0～50℃；相对湿度：≤85%RH；避免强腐蚀气体。
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。
Metrohm702SM电位滴定仪操作规程1、主题内容与适用范围本规程规定了Metrohm702SM电位滴定仪的操作方法，用于中煤龙化甲醇酸碱值的测定。
2、操作方法2.1、pH玻璃电极校正2.1.1、每天实验开始前，必须先校正pH电极。
且在校正电极前，请务必保证标准缓冲液已经稳定到室温。
2.1.2、打开702电位滴定仪的电源待仪器自检完成后，按一下操作键盘的…3…,显示屏出现recall method后按确定。
然后一下一下按sct直至显示屏出现pH-Cal,按enter确定。
2.1.3、将电极用蒸馏水洗净后用洁净的滤纸吸干水份放入6.86的缓STABT冲液中，按",屏幕显示温度，输入实际温度值然后按ntr,屏幕提示输入第一种缓冲液的pH值，输入6.86后按ntr。
屏幕显示读取的电位值(约8mV),待读值稳定后仪器自动提示第二种缓冲液的pH 值。
将电极用蒸馏水冲洗干净后用洁净的滤纸吸干水份再放入4.00的缓冲液中，输入4.00后按mtr,屏幕显示读取的电位值(约180mV),待读值稳定后仪器会自动出现pH(as)及Slope的计算结果。
2.1.4、pH(as)含义为校正曲线(pH值对mV值)y=kx+b的截距b值，即电位为0mV时候的pH值，应该落在6.85-7.15的范围内。
Slope含义为校正曲线的的斜率k值，应落在0.98-1.03的范围内。
2.1.5、pH电极应每天校正，当斜率超出0.98-1.03的范围时，请处理电极，电极处理依然无法改善，请及时更换电极。
2.2、甲醇酸值测定2.2.1、实验开始前，请确定pH玻璃电极当日已经经过校正。
2.2.2、实验开始前，请确定试样温度已经达到室温。
2.2.3、实验开始前，请确保滴定管内的NaOH为新鲜溶液，并已经排除滴定管及管线内的所有气泡。
可以使用如下方法排除气泡：打开702主机后将交换单元的滴定头放到一个废液杯内，然后一直按住主机屏幕下的<DOS>键，排出5mL以上的液体，直至所有的气泡均已去除。
