E+H电导率分析仪精讲

电导率分析仪的特点都有哪些分析仪如何操作电导率分析仪（单双通道）是一款接受嵌入式技术，集信号采集、信号处理、显示、数据传输一体的智能化程度、测量精准明确高、操作便利的智能化专用化学仪表，可广泛应电导率分析仪（单双通道）是一款接受嵌入式技术，集信号采集、信号处理、显示、数据传输一体的智能化程度、测量精准明确高、操作便利的智能化专用化学仪表，可广泛应用于电力、冶金、石油、化工、制药等行业水质电导率值的连续测量。

特点1）192×64点阵液晶、多参数显示、内容丰富2）接受先进的嵌入式系统设计、贴片工艺技术提高了产品性能和牢靠性、符合EMC设计要求；3）中、英文双语可编程切换，充分不同用户需求；4）全中、英文引导式操作模式、使用简单、通俗易懂；5）可编程的自动或手动温度补偿方式、使用快捷、便利；6）两路完全隔离的电流信号输出，可分别设定输出电流范围；7）带有上、下限报警功能，可分别设定报警值；8）带有标准的485数字通讯接口，可实现远距离通讯；9）具有历史数据、运行、校准记录存储、查询功能，可查询100000条历史数据、1000条运行记录、100条校准记录；10）防护等级高,达到IP65，可以充分各种多而杂环境应用要求；11）可选择多种电极常数电极，每种电极均有2个量程且量程均可自动切换，最大程度充分用户测量范围和精度要求；—专业分析仪器服务平台,试验室仪器设备交易网,仪器行业专业网络宣扬媒体。

相关热词：等离子清洗机,反应釜,旋转蒸发仪,高精度温湿度计,露点仪,高效液相色谱仪价格,霉菌试验箱,跌落试验台,离子色谱仪价格,噪声计,高压灭菌器,集菌仪,接地电阻测试仪型号,柱温箱,旋涡混合仪,电热套,场强仪万能材料试验机价格,洗瓶机,匀浆机,耐候试验箱,熔融指数仪,透射电子显微镜。

频谱分析仪是扫瞄调谐频谱分析仪，其基本结构仿佛超外差式接收器，工作原理是输入信号经衰减器直接外加到混波器，可调变的本地振荡器经与CRT 同步的扫瞄产生器产生随时间作线性变化的振荡频率，经混波器与输入频谱分析仪是扫瞄调谐频谱分析仪，其基本结构仿佛超外差式接收器，工作原理是输入信号经衰减器直接外加到混波器，可调变的本地振荡器经与CRT 同步的扫瞄产生器产生随时间作线性变化的振荡频率，经混波器与输入信号混波降频后的中频信号（IF）再放大、滤波与检波传送到CRT 的垂直方向板，因此在CRT 的纵轴显示信号振幅与频率的对应关系。

电导率仪的原理及其使用介绍电导率仪主要是测液体介质之间传递电流能力的仪器，一般用于电力、化工、冶金、环保、制药、野外、湖泊、科研、食品和自来水等溶液中电导率值（TDS）的连续监测，同时在水处理，水产养殖试验方面也有应用。

电导率仪的工作原理：电导率是物体传导电流的能力，电导率测量仪的测量原理是将两块平行的极板；放到被测溶液中，在极板的两端加上一定的电势(通常为正弦波电压)，然后测量极板间流过的电流。

根据欧姆定律，电导率(G)--电阻(R)的倒数，由导体本身决定的。

电导率的基本单位是西门子(S)。

因为电导池的几何形状影响电导率值，标准的测量中用单位电导率S/m（常用的还有μS/cm）来表示，以补偿各种电极尺寸造成的差别。

单位电导率(C)简单的说是所测电导率(G)与电导池常数(L/A)的乘积.这里的L为两块极板之间的液柱长度，A为极板的面积。

水的电导率与其所含无机酸、碱、盐的量有一定关系。

当它们的浓度较低时，电导率随浓度的增大而增加，因此，该指标常用于推测水中离子的总浓度或含盐量。

电导率仪使用时的注意事项：1、在测量纯水或超纯水时，为了避免测量值的漂移现象，建议采用密封槽；在密封状态下的进行流动测量，如采用烧杯取样测量，则会产生较大的误差。

2、因温度补偿是采用固定的温度系数，所以，超、高纯水的测量，尽量采用温度不补偿方式进行，测量后查表。

3、电极插头座应防止受潮，仪表应安置于干燥环境，避免因为水滴溅射或受潮，引起仪表的漏电或测量误差。

4、测量电极是精密部件，不可以分解，不可以改变电极形状和尺寸，且不可以用强酸、碱清洗，以免改变电极常数，而影响仪表测量的准确性。

5、为确保测量的精度，电极使用前，应用蒸馏水(或去离子水)冲洗二次(铂黑电极干放一段时间后，在使用前，必须在蒸馏水中浸泡)，然后用被测试样水冲洗三次后，方可测量。

标签:电导率仪。

电导率基本调试说明（CLM2X3）
【功能键说明】：仪表基本调试要用3个按键
与：数字的加与减，上下菜单的选择；同时按为退出；
确定。

【基本调试】
1、设置电极参数：按键，到，通过按输入密码22，
，按到，继续按几次到，通过
与输入探头对应的电极常数k（k值一般在传感器标签的右下
角），按键确定，到通过与输入线缆的电阻补偿值
（0.165Ω/米），按键确定；
2、退出：同时按退出到；
3、设置量程：按几次到，再按几次进入到通过
与输入4mA对应值，输入完成后按确认到，通过与输入20mA对应值，输入完毕后按键确定；
4、同时按几次退出到测量界面。

【恢复出厂设置】
1、原始数据记录：（恢复出厂设置之前一定要记录与
中的主要参数）；
2、恢复出厂设置：主界面按到，通过按输入密码22，如
图：，按到，通过按几次到，
按几次进入，通过或者选择“Facty”,如图：
，按确定；
3、退出：同时按几次，退出到主界面，然后再按照上述【基本调试】
步骤设置参数。

TI193C/07/en/09.0551500279Technical InformationLiquisys M CLM223/253Conductivity/Resistivity MeasurementTransmitter for conductive and inductive sensorsApplicationThe modular design of the Liquisys M CLM223/253 allows easy adaption of the transmitter to a variety of customerrequirements. Starting with the basic version for "measurement and alarm generation", the transmitter can be equipped with additional software and hardware modules for specialapplications. These modules can also be retrofitted as required.Application•Ultrapure water •Water treatment•Ion exchanger, reverse osmosis •Cooling water desalinisationYour benefits•Field or panel-mounted housing •Universal application •Simple handling–Logically arranged menu structure –Ultrasimple two-point calibration •Safe operation–Overvoltage (lightning) protection–Direct access for manual contact control –User-defined alarm configurationThe basic unit can be extended with:•2 or 4 additional contacts for use as:–Limit contacts (also for temperature)–P(ID) controller–Timer for simple rinse processes–Complete cleaning with Chemoclean •Plus package:–User defined current output characteristics–Automatic cleaning trigger on alarm or limit violation –Ultrapure water monitoring acc. to USP (United States Pharmacopeia) and EP (European Pharmacopoeia) (conductive)–Polarisation detection (conductive)–Concentration measurement–Temperature compensation via table–Process Check System (PCS): live check of the sensor –Adaptive calibration with installation factor (inductive)•HART ® or PROFIBUS-PA/-DP•2nd current output for temperature, main measured value or actuating variable•Current input for flow rate monitoring with controller shut offor for feedforward controlLiquisys M CLM223/253Function and system designFeatures of the basic version Conductive or inductiveTwo instrument versions for measurement with conductive (two electrode) sensors or inductive sensors areavailable. The use of inductive sensors that are less sensitive to soiling than conductive sensors is recommendedfor high conductivity measurement, concentration measurement or adhering media.Measuring of conductivity and resistivity (conductive)This is selected via the menu. During measurement, the value measured can be displayed in the othermeasuring mode. The temperature is displayed at the same time or, if desired, not shown at all.Temperature compensationThe following temperature compensation selections are available:•Linear•NaCl curve according to IEC 746•Ultrapure water NaCl (neutral compensation)•Ultrapure water HCl (acid compensation, also ammonia)The reference temperature is user defined, the standard value is 25 °C (77 °F).ConfigurationDifferent alarms are required depending on application and operator. Therefore the transmitter permitsindependent configuration of the alarm contact and error current for each individual error. Unnecessaryor undesirable alarms can be suppressed in this manner. Up to four contacts can be used as limit contacts(also for temperature), to implement a P(ID) controller or for cleaning functions.Direct manual operation of the contacts (bypassing the menu) provides quick access to limit, control orcleaning contacts, permitting speedy correction of deviations.The serial numbers of the instrument and modules and the order code can be called up on the display.The cell constant can be edited and even calibrated for demanding special applications.Additional functions of the plus package Current output configurationIn order to output wide measuring ranges while still achieving a high resolution in specific ranges, the current output can be configured as required via a table. This permits bilinear or quasi-logarithmic curves, etc. Polarisation detectionPolarisation effects in the boundary layer between the sensor and the medium to be measured limit the measuring range of conductive conductivity sensors.The transmitter can detect polarisation effects using an innovative, intelligent signal evaluation process. Process Check System (PCS)This function checks the measuring signal for stagnation. If the measuring signal does not change for some time (several measured values), an alarm is triggered. Soiling, blockage or similar could be the cause of such behaviour.Ultrapure water monitoring acc. to USP (United States Pharmacopeia) and EP (European Pharmacopoeia)Ultrapure water monitoring according to USP <645> and EP means that the uncompensated conductivity and the temperature are measured and compared to a table.The transmitter (conductive with additional contacts) comes with the following functions:•Monitoring of "Water for Injection" (WFI) according to USP and EP•Monitoring of "Highliy Purified Water" (HPW) according to EP•Monitoring of "Purified Water" (PW) according to EPThe user-adjustable pre-alarm indicates undesirable operating values in due time. Full compliance with USP or EP requires the use of a precisely calibrated sensor, for example, the CLS16.Liquisys M CLM223/253Concentration measuringThe conversion from conductivity to concentration is effected using four user-definable concentration curves . This permits concentrations to be displayed in %, ppm, mg/l or TDS (total dissolved solids).Adaptive calibration for determination of the installation factor (inductive)Inductive measuring sensors must normally be installed in pipes at a required minimum distance from the pipe wall. If this minimum distance is not observed, the measured value changes. The built-in adaptive calibration using the installation factor allows you to compensate for this once the sensor is installed.Second current outputThe second current output can be configured for temperature, main measured value (conductivity, resistivity, concentration) or actuating variable.Current inputThe current input of the transmitter allows two different applications: controller shut-down in case of lower flow rate violation or total failure in the main flow as well as feedforward control. Both functions are also combinable.Explosion proof versions for zone 2Remarks:•Permissible sensors: all conductive conductivity sensors, inductive sensors CLS50 (Non-Ex version) and CLS52.•Do not use blue sensor cables. Electric circuits are not intrinsically safe according to EN 50039.Application of transmitter and sensor in hazardous area zone 2Field housing CLM253 with power supply 24 VApplication of transmitter as relatedelectrical equipment in non-hazardous area or in simple pressurised apparatus; application of sensor in hazardous area zone 2Field housing CLM253 with power supply 230 V orPanel mounted housing CLM223 with power supply 230V or 24 VLiquisys M CLM223/253Measuring systemA complete measuring systems comprises:•The transmitter Liquisys M CLM223 or CLM253•A sensor with or without an integrated temperature sensor•A measuring cable CYK71 (conductive), CPK9 for Condumax H CLS16 or CLK5 (inductive)Options: extension cable, junction box VBMComplete measuring system Liquisys M CLM223/2531234Conductive sensor CLS15Liquisys M CLM253Liquisys M CLM223Inductive sensor CLS52567Inductive sensor CLS50Conductive sensor CLS21Immersion assembly CLA111Liquisys M CLM223/253InputMeasured variables Conductivity, resistivity, temperature Measuring rangeCable specificationCell constantTemperature sensors Pt 100, Pt 1000, NTC 30KMeasuring frequencyBinary inputsCurrent input4...20mA, galvanically separated Load: 260Ω at 20mA (voltage drop5.2V)OutputCurrent range 0/4 ... 20 mA, galvanically separated, active Error current 2.4 or 22 mA in case of an error Loadmaximum 500 Ω Linearisation transmission behaviourResolutionmax. 700 digits/mAConductivity (conductive):0 ... 60 mS/cm (uncompensated)Conductivity (inductive):0 ... 2000 mS/cm (uncompensated)Resistivity:0 ... 200 M Ω⋅cmConcentration:0 ... 9999 (%, ppm, mg/l, TDS)Temperature:-35 ... +250 °C (-31 ... +482 °F)Cable length (conductive):conductivity: max. 100 m (328.1 ft) (CYK71)resistivity: max 15 m (49.22 ft) (CYK71)Cable length (inductive):max 55 m (180.46 ft) (CLK5)Cable resistance CYK71:165 Ω/km (conductivity measurement)Adjustable cell constant:k = 0.0025 ... 99.99 cm -1Conductivity, resistivity (conductive):170 Hz ... 2 kHz Conductivity (inductive): 2 kHz Voltage:10...50V Power consumption:max. 10mAConductivity:Resistivity:Concentration:Actuating variable:Temperature:adjustable adjustable adjustable adjustableadjustableLiquisys M CLM223/253Min. distance for 0/4...20mA signalIsolation voltage max. 350 V RMS /500 V DC Overvoltage protection according to EN 61000-4-5Auxiliary voltage outputContact outputsLimit contactorControllerAlarmConductivity:Measured value 0 ... 1.999 µS/cm 0.2 µS/cm Measured value 0 ... 19.99 µS/cm 2 µS/cm Measured value 20 ... 199.9 µS/cm 20 µS/cm Measured value 200 ... 1999 µS/cm 200 µS/cm Measured value 2 ... 19.99 mS/cm 2 mS/cm Measured value 20 ... 2000 mS/cm 20 mS/cmResistivityMeasured value 0 ... 199.9 k Ω⋅cm 20 k Ω⋅cm Measured value 200 ... 1999 k Ω⋅cm 200 k Ω⋅cm Measured value 2 ... 19.99 M Ω⋅cm 2.0 M Ω⋅cm Measured value 20 ... 200 M Ω⋅cm 20 M Ω⋅cmConcentration no minimum distance Temperature15 °COutput voltage:15V ± 0.6Output current:max. 10mASwitching current with ohmic load (cos ϕ= 1):max. 2A Switching current with inductive load (cos ϕ = 0.4):max. 2ASwitching voltage:max. 250V AC, 30V DC Switching power with ohmic load (cos ϕ = 1):max. 500 VA AC, 60W DC Switching power with inductive load (cos ϕ = 0.4):max. 500VA AC, 60W DC Pickup/dropout delay:0...2000sFunction (adjustable):pulse length/pulse frequency controller Controller response:PIDControl gain K p :0.01...20.00Integral action time T n :0.0...999.9min Derivative action time T v :0.0...999.9min Period for pulse length controller:0.5...999.9 s Frequency for pulse frequency controller:60...180 min -1Basic load:0...40% of max. set valueFunction (selectable):Latching/momentary contactAlarm threshold adjustment range:Conductivity, resistivity, concentration,temperature, USP, EP: complete measuring range Alarm delay:0 (2000)s (min)Liquisys M CLM223/253Power supplyElectrical connectionThe instrument has protection class II and is generally operated without protective earth connection. To ensure the measuring stability and the function for conductive sensors you have to connect the outer screen of the sensor cable to the PE terminal.Electrical connetion of the transmitterA B C D E F G H Sensor (conductive)Sensor (inductive)Temperature sensor Signal output 1 conductivity Signal output 2 variable Binary input 1 (Hold)Binary input 2 (Chemoclean)Aux. voltage outputIJ K L M N O Alarm (current-free contact position)Relay 1 (current-free contact position)Relay 2 (current-free contact position)Relay 3 (current-free contact position)Relay 4 (current-free contact position)Current input 4...20mA Power supplyConnection of sensorYou require screened special measuring cables to connect conductivity sensors to the transmitter. To extend the measuring cable, use junction box and extension cable (see accessories).Power supplyDepending on ordered version:100/115/230 V AC +10/-15 %, 48 ... 62 Hz 24 V AC/DC +20/-15 %Power consumption max. 7.5 VAMains protectionFine-wire fuse, medium-slow blow 250 V/3.15 APerformance characteristicResolutionDeviation of indication aRepeatability aTemperature compensationReference temperature 25 °C (77 °F); adjustable for the compensation of the medium temperature Temperature offset±5 °C; for the adjustment of the temperature displayConnection of conductive sensorsConnection of inductive sensorsConductivity:Temperature:depending on the measuring range: 0.001 µS/cm to 1.999µS/cm and k ≤ 0.5 cm -10.1 °Ca) acc. to IEC 746-1, for nominal operating conditionsConductivity:Display:max. 0.5 % of measured value ± 4 digits Conductivity signal output:max. 0.75 % of current output range Resistivity:Display:max. 0.5 % of measured value ± 4 digits Resistivity signal output:max. 0.75 % of current output range Temperature:Display:max. 1.0 % of measuring range Temperature signal output:max. 1.25 % of current output range Conductivity:max. 0.2 % of measured value ± 2 digits Resistivity:max. 0.2 % of measured value ± 2 digitsRange:-35 ... +250 °C (-31 ... +482 °F)Types of compensation:uncompensated, linear, NaCl, table;conductive only: ultrapure water NaCl, ultrapure water HClEnvironmentAmbient temperature -10 ... +55 °C (+14 ... +131 °F)Ambient temperature limit –20 ... +60 °C (-4 ... +140 °F)Storage and transport temperature–25 ... +65 °C (-13 ... +149 °F)Electromagnetic compatibility Interference emission and interference immunity acc. to EN 61326: 1997 / A1: 1998Ingress protectionRelative humidity10 ... 95%, non-condensingMechanical constructionDimensionsWeightMaterialsTerminalsPanel mounted instrument:IP 54 (front), IP 30 (housing)Field instrument:IP 65Panel mounted instrument:96x 96x 145mm (3.78 x 3.78 x 5.71 inches)Installation depth: approx. 165mm (6.50")Field instrument:247x 170x 115mm (9.72 x 6.69 x 4.53 inches)Panel mounted instrument:max. 0.7kg (1.5 lb)Field instrument:max.2.3kg (5.1 lb)Housing of panel mounted instrument:Polycarbonate Field housing:ABS PC FrFront membrane:Polyester, UV-resistant Cross sectionmax. 2.5 mm2Liquisys M CLM223/253Human interfaceDisplay elementsOperating elements 1LC display for display of measured values, configuration data and current menu field 2Field for user labeling34 main control keys for calibration and instrument configuration 4Key for switching between automatic/manual operation of the relays 5LED indicators for limit contactor relay (switch status)6LED indicator for alarm function7Display of active contact and key for relay switching in manual modeThe display simultaneously shows the current measured value and the temperature - the essential process data. Brief information texts in the configuration menu provide assistance with parameter configuration.Instrument control functionsAll instrument control functions are arranged in a logical menu structure. Following access code entry, the individual parameters can be easily selected and modified as needed.Certificates and approvals4 symbolDeclaration of conformityThe product meets the legal requirements of the harmonized European standards. The manufacturer confirms compliance with the standards by affixing the 4 symbol.Ex approval for zone 2Explosion protection for Zone 2CLM253-..6...ATEX II 3G EEx nA[L] IIC T4CLM253-..4...CLM223-..4...CLM223-..6...ATEX II 3G [EEx nAL] IICLiquisys M CLM223/25314Endress+HauserOrdering informationProduct structure Additional functions of thePlus package •Current output table to cover large areas with varying resolution, fields O33x •Process Check System (PCS): live check of the sensor, function group P•Ultrapure water monitoring for "Water for injection" (WFI) and "Purified water" (PW) acc. to United States Pharmacopeia (USP) and European Pharmacopoeia (EP) with pre-alarm (conductive, additional contacts necessary), fields R26x and R27x•Polarisation detection (conductive), function group P•Concentration measurement, function group K•Temperature compensation via coefficient table, function group T•Adaptive calibration with installation factor (inductive), fields C13x•Automatic cleaning function start, field F8Scope of deliveryThe delivery of the field instrument includes:•1 transmitter CLM253•1 plug-in screw terminal•1 cable gland Pg 7•1 cable gland Pg 16 reduced•2 cable glands Pg 13.5•1 operating instructions BA 193C/07/en•versions with HART communication:1 operating instructions Field Communication with HART, BA 208C/07/en•versions with PROFIBUS communication:1 operating instructions Field Communication with PROFIBUS PA/DP, BA 209C/07/en•versions with explosion protection for hazardous area zone II (ATEX II 3G):Safety instructions for use in explosion-hazardous areas, XA 194C/07/a3The delivery of the panel mounted instrument includes:•1 transmitter CLM223•1 set of plug-in screw terminals VersionCDConductivity/resistivity measurement (conductive two-electrode sensor)CSConductivity/resistivity measurement (conductive two-electrode sensor) with additional functions (Plus package)IDConductivity measurement (inductive sensor)IS Conductivity measurement (inductive sensor) with additional functions (Plus package)Power supply; approval 0230V AC 1115V AC 2230V AC; CSA Gen. Purp.3115V AC; CSA Gen. Purp.4230V AC; ATEX II 3G [EEx nAL] IIC 5100VAC 624V AC/DC; ATEX II 3G [EEx nAL] IIC for CPM223, EEx nA[L] IIC T4 for CPM253724V AC/DC; CSA Gen. Purp.824V AC/DCOutput1 x 20 mA, conductivity/resistivity 12 x 20 mA, conductivity/resistivity and temperature/main measured value/actuating variable 3PROFIBUS PA 4PROFIBUS DP 51 x 20 mA, conductivity/resistivity HART ®62 x 20 mA, conductivity/resistivity HART ® and temp./main measured value/actuating variableAdditional contacts; analogue input05Not selected 102 x relay (limit/controller/timer)154 x relay (limit/controller/Chemoclean)164 x relay (limit/controller/timer)202 x relay (limit/controller/timer); current input 254 x relay with cleaning (limit/controller/timer/Chemoclean); current input 264 x relay with timer (limit/controller/timer); current inputCLM253-complete order codeCLM223-Liquisys M CLM223/253Endress+Hauser 15•2 tensioning screws•1 operating instructions BA 193C/07/en•versions with HART communication:1 operating instructions Field Communication with HART, BA 208C/07/en•versions with PROFIBUS communication:1 operating instructions Field Communication with PROFIBUS PA/DP, BA 209C/07/en •versions with explosion protection for hazardous area zone II (ATEX II 3G):Safety instructions for use in explosion-hazardous areas, XA 194C/07/a3AccessoriesSensors •Condumax W CLS12Conductive conductivity sensor for standard, Ex and high temperature applications;Ordering acc. to version, see Technical Information TI 082/C07/en•Condumax W CLS13Conductive conductivity sensor for standard, Ex and high temperature applications;Ordering acc. to version, see Technical Information TI 083/C07/en•Condumax W CLS15Conductive conductivity sensor for pure and ultra-pure water applications (incl. Ex);Ordering acc. to version, see Technical Information TI 109/C07/en•Condumax H CLS16Hygienic conductive conductivity sensor for pure and ultra-pure water applications (incl. Ex);Ordering acc. to version, see Technical Information TI 227/C07/en•Condumax W CLS19Conductive conductivity sensor for pure and ultra-pure water applications;Ordering acc. to version, see Technical Information TI 110/C07/en•Condumax W CLS21Conductive conductivity sensor for applications with middle to high conductivity (incl. Ex); Ordering acc. to version, see Technical Information TI 085/C07/en•Indumax P CLS50Inductive conductivity sensor for standard, Ex and high temperature applications;Ordering acc. to the sensor version, see Technical Information (TI118C/07/en)•Indumax H CLS52Inductive conductivity sensor with short response time in hygienic design;Ordering acc. to the sensor version, see Technical Information (TI167C/07/en)。

e+h电导率仪中文说明书（实用版）目录1.e+h 电导率仪简介2.e+h 电导率仪的工作原理3.e+h 电导率仪的操作方法4.e+h 电导率仪的维护与保养5.e+h 电导率仪的注意事项6.e+h 电导率仪的技术参数7.e+h 电导率仪的故障排除与处理正文一、e+h 电导率仪简介e+h 电导率仪是一款高精度、高可靠性的电导率测量仪器，适用于各种工业、科研和实验室的电导率测量需求。

该仪器具有测量范围宽、精度高、操作简便等特点，广泛应用于水质、化工、电力、环保等领域。

二、e+h 电导率仪的工作原理e+h 电导率仪的工作原理基于电导率的测量。

电导率是指在单位长度、单位截面积的条件下，电解质溶液导电的能力。

e+h 电导率仪通过测量电解质溶液中的电流和电压，计算出电导率。

三、e+h 电导率仪的操作方法1.开机：连接电源线，打开仪器电源开关，仪器自检并显示初始界面。

2.准备测量：将电极插入待测溶液中，确保电极与溶液充分接触。

3.测量：按下测量键，仪器开始测量并显示电导率值。

4.结束测量：测量完成后，按下停止键，仪器返回初始界面。

四、e+h 电导率仪的维护与保养1.定期校准：为了保证测量精度，建议每隔一段时间进行一次校准。

2.清洁电极：使用后，及时清洁电极以避免污染。

3.存储：长时间不使用时，请将仪器存放在干燥、通风的地方。

五、e+h 电导率仪的注意事项1.使用时，请勿将电极插入过于浑浊或含有颗粒的溶液中，以免损坏电极。

2.不使用时，请关闭电源，以免造成不必要的损耗。

3.仪器工作时，请勿让液体进入仪器内部，以免损坏电路。

六、e+h 电导率仪的技术参数1.测量范围：0-1000000 μS/cm2.测量精度：±1%FS3.温度补偿：自动4.输出信号：4-20mA/0-10V5.电源：AC 220V/50Hz七、e+h 电导率仪的故障排除与处理1.无法开机：检查电源线是否连接良好，电源是否正常。

2.测量不准确：检查电极是否污染，校准是否准确。