TDS说明书(2009.1)

1470经济型便携电导率/TDS测量仪●量程自动选择●自动或手动校准●32位读数储存●电导率和TDS模式●自检功能●500小时电池寿命宽测量范围由自动量程功能加以支持，保证所有结果能以所能获得的最高分辨率来显示。

校验可以10μS, 84μS, 1413μS和12.88mS 的标准溶液自动进行，或根据其他标准值手动进行。

在没有溶液的情况下，可快速设定池常数的K 值。

标准电导率测量可在缺省条件下迅速容易地进行，但对于更复杂的应用场合，要进行全程调节。

参考温度可以设定到18, 20或25°C，且温度系数可以在0 - 4%/°C之间调节。

使用备选TDS装置时，E/C 比率可以在从0.5 - 0.8 范围之间调节，以保证与所有操作步骤的一致性。

一个简单、双功能存储栏可以使多达32个读数储存于非易失性内存中，并从中调取。

技术参数电导率范围 6 档范围0 到19.99µS - 0 到1999mS*分辨率(精度)0.1µS 到1mS* (±0.5% ±2 digits)TDS范围6档范围0 到19.99mg/l - 0 到1999g/l*分辨率(精度)0.01mg/l 到1g/l* (±0.5% ±2数字)温度范围-10 到105°C / 14 到221°F分辨率(精度)0.1°C/1°F (±0.5°C/±1°F)ATC & 手动范围0 到100°C / 32 到212°F电导池常数0.01 到19.99参考温度18, 20 或25°C 可设定温度系数0.00 到 4.00%/°C 线性自动标准识别10µS, 84µS, 1413µS 或12.88mS探测器输入DIN接口电导/温度电源 2 AA 电池电池寿命500 小时(@25°C碱性电池)尺寸175(l) x 75(w) x 35(d)mm重量250g* 当电导池常数> 5标准配置470 271 470型电导率/TDS测量仪，配有便携箱，环氧树脂电导传感器，K=1（027 298），电池（已带）和操作说明书。

Transmitter for oxygen sensorsApplication•Wastewater treatment plants and wastewater treatment •Water treatment and drinking water monitoring •Surface water: rivers, lakes, sea•Fish farming•Boiler feedwater (trace measurement)Your benefits•Field or panel-mounted housing•Universal application•Easy to use–Simple menu structure–Simple calibration in air, air-saturated water or medium •Manual contact control and user-definedalarm configuration The basic device can be extended with:•2 or 4 contacts for use as–Limit contacts (also for temperature)–P(ID) controller–Timer for simple rinse processes or Chemoclean•Plus package:–Configurable current output characteristic–Cleaning started automatically–Process monitoring–Sensor signal live check•HART or PROFIBUS-PA/-DP•2nd current output: temperature, main measured value, actuating variable•Current input for flow monitoring or for feedforward controlProducts Solutions ServicesTechnical InformationLiquisys M COM223/253Dissolved oxygen measurementTI00199C/07/EN/15.1471273529Liquisys M COM223/2532Endress+HauserFunction and system designMeasuring systemA complete measuring system comprises:•Transmitter Liquisys M COM223 or COM253•Oxygen sensor–COS41 for Liquisys M COM2x3-DS/DX –COS61 for Liquisys M COM2x3-WS/WX Optionally:•Extension cable OM, junction box VS•Weather protection cover CYY101 for field housing1Complete measuring systems1Oxygen sensor2Immersion assembly CYA1123Universal suspended assembly holder CYH1124Weather protection cover CYY1015Liquisys M COM2536Liquisys M COM2237Retractable assembly COA451Liquisys M COM223/253Endress+Hauser 3Equipment architectureBlock diagramCOM2x3-DS/DX (COS41)2Block circuit diagram COM2x3-DS/DX A COS41 sensorH Relay 1 (current-free contact position)B Signal output 1, oxygen I Relay 2 (current-free contact position)C Signal output 2, temperature J Relay 3 (current-free contact position)D Binary input 1 (hold)K Relay 4 (current-free contact position)E Binary input 2 (Chemoclean)L Current input 4 to 20 mA F Auxiliary voltage outputM Power supplyGAlarm (current-free contact position)*Auxiliary voltage, terminal 85/86 can be usedThe device is approved for protection class II and is generally operated without a protective ground connection.Liquisys M COM223/2534Endress+HauserCOM2x3-WS/WX (COS61 from serial number 79xxxx)3Block circuit diagram COM2x3-WS/WX A COS61 sensor I Alarm (current-free contact position)B VS box for extensionJ Relay 1 (current-free contact position)CCOM253: plug-in connection for O 2 connectorCOM223: connector of sensor cable must be removed or VS box must be used KRelay 2 (current-free contact position)D Signal output 1, oxygen L Relay 3 (current-free contact position)E Signal output 2, temperature M Relay 4 (current-free contact position)F Binary input 1 (hold)N Current input 4 to 20 mAG Binary input 2 (Chemoclean)O Power supplyHAuxiliary voltage output*Auxiliary voltage, terminal 85/86 can be usedThe device is approved for protection class II and is generally operated without a protective ground connection.No function is associated with terminals 18 and 19 when a COS61 is connected.Liquisys M COM223/253Endress+Hauser 5DependabilityReliabilityCalibrationAmperometric sensors have no zero current and therefore only require one-point calibration. This calibration is performed in air, in air-saturated water or by reference calibration in the medium.The optical sensor is calibrated when delivered and can be calibrated in the air and at the zero point if necessary.Sensor live check (process check system, PCS (Plus package))The process check system (PCS) checks the measuring signal for stagnation. An alarm is triggered if the measuring signal does not change over a specific period (several measured values).The main causes of stagnating measured values are:•Contaminated sensor, or sensor outside of medium •Sensor defective•Process error (e.g. through control system)Current output configuration (Plus package)In order to display 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 and quasi-logarithmic curves etc.Second current outputThe second current output can be flexibly configured to output the temperature, the main measured value (conductivity, resistance, concentration) or the controller actuating variable.Current inputThe transmitter current input permits two different applications:•Flow monitoring with controller switch-off if flow falls below lower flow level in the main flow •Feedforward control to the controller The two functions can also be combined.Automatic pressure compensation (only DS/WS/WX versions)The oxygen concentration not only depends on the altitude but also on the weather conditions (pressure). Automatic pressure compensation also takes these fluctuations into consideration.SafetyProcess safetyDifferent alarms are required depending on the application and operator. The transmitter therefore permits the independent configuration of the fault-signaling contact and the error current for every individual error. Unnecessary or undesired alarms can be suppressed in this way. Up to four contacts can be used as limit contacts (also for temperature), as a P(ID) controller and for cleaning functions.The direct manual operation of the contacts (bypassing the menu) enables quick access to limit value, control or cleaning contacts. Any deviations can be quickly corrected in this way.InputMeasured valuesOxygenTemperature Measuring rangesConcentration 0 to 20 mg/l Saturation index 0 to 200 % SATPartial pressure 0 to 400 hPa (0 to 6 psi)Temperature -10 to 60 °C (can also be displayed in °F)Signal inputDS/DX version 0 to 3000 nAWS/WX versionDigital communication or 0 to -7500 mVLiquisys M COM223/253 Binary inputs Voltage10 to 50 VCurrent consumption Max. 10 mACurrent input 4 to 20 mA, galvanically isolatedLoad: 260 Ω for 20 mA (voltage drop 5.2 V)OutputOutput signal0/4 to 20 mA, galvanically isolated, activeHARTSignal encoding Frequency Shift Keying (FSK) + 0.5 mA via current output signalData transmission rate1200 baudGalvanic isolation YesPROFIBUS PASignal encoding Manchester Bus Powered (MBP)Data transmission rate31.25 kBit/s, voltage modeGalvanic isolation Yes (IO modules)PROFIBUS DPSignal encoding RS485Data transmission rate9.6 kBd, 19.2 kBd, 93.75 kBd, 187.5 kBd, 500 kBd, 1.5 MBdGalvanic isolation Yes (IO modules)Signal on alarm 2.4 or 22 mA in the event of an errorLoad Max. 500 ΩTransmission range ConcentrationΔ 0.2 to Δ 20 mg/lSaturation indexΔ 2 to Δ 200 % SATPartial pressureΔ 4 to Δ 400 hPaSignal resolution Max. 700 digits/mASeparation voltage Max. 350 V RMS / 500 V DCAuxiliary voltage output Output voltage15 V ± 0.6 VOutput current Max. 10 mAContact outputs Switching current with ohmic load (cos φ = 1)Max. 2 ASwitching current with inductive load (cos φ = 0.4)Max. 2 ASwitching voltage Max. 250 V AC, 30 V DCSwitching power with ohmic load (cos φ = 1)Max. 500 VA AC, 60 W DCSwitching power with inductive load (cos φ = 0.4)Max. 500 VA AC, 60 W DCLimit contactors Pickup/dropout delay0 to 2000 s6Endress+HauserLiquisys M COM223/253Endress+Hauser 7Controller Function (configurable)Pulse length/pulse frequency controller,continuous controllerController behavior P, PI, PD, PID, basic load dosing Control gain K p0.01 to 20.00Integral action time T n 0.0 to 999.9 min Derivative action time T v0.0 to 999.9 min Period length for pulse length controller 0.5 to 999.9 s Frequency for pulse frequency controller 60 to 180 min -1Basic load 0 to 40 % of max. actuating variable AlarmFunction (switchable)Latching/momentary contactAlarm threshold adjustment range O 2 / temperature: entire measuring range depending on sensor used Alarm delay0 to 2000 s Monitoring time for lower limit violation 0 to 2000 min Monitoring time for upper limit violation0 to 2000 minProtocol-specific dataHARTManufacturer ID 11h Device type0094h Transmitter-specific revision 0001h HART version5.0Device description files (DD)/hart HART load (communication resistor)250 ΩDevice variables None (only dynamic variables PV and SV)Supported features-PROFIBUS PA Manufacturer ID 11h Device type 1518h Device revision 0001h Profile version 2.0GSD files /profibusGSD version Output values Primary value, temperature Input variables PCS display valueSupported featuresDevice lock: The device can be locked using the hardware or software.Liquisys M COM223/2538Endress+HauserPROFIBUS DP Manufacturer ID 11h Device type 151E h Profile version 2.0GSD files /profibusGSD version Output values Primary value, temperature Input variables PCS display valueSupported featuresDevice lock: The device can be locked using the hardware or software.Power supplySupply voltageDepending on order version:•100/115/230 V AC +10/-15 %, 48 to 62 Hz •24 V AC/DC +20/-15 %Power supply via fieldbusHART Supply voltageNot applicable, active current outputs Reverse polarity protectionNot applicable, active current outputsPROFIBUS PA Supply voltage9 V to 32 V, max. 35 V Sensitivity to reverse polarityNo FISCO/FNICO compliant according to IEC 60079-27NoPROFIBUS DP Supply voltage9 V to 32 V, max. 35 V Sensitivity to reverse polarityNot applicable FISCO/FNICO compliant according to IEC 60079-27NoPower consumption Max. 7.5 VAMains fuse Fine-wire fuse, semi-delay 250 V/3.15 ACircuit breakerThe device does not have a power switch‣The customer must provide a protected circuit breaker in the vicinity of the device.‣The circuit breaker must be a switch or power switch, and you must label it as the circuit breakerfor the device.‣At the supply point, the power supply for the 24 V versions must be isolated from dangerous livecables by double or reinforced insulation.Cable specificationCable length COS61Max. 100 m (330 ft)Cable length COS41Max. 50 m (160 ft)Liquisys M COM223/253Endress+Hauser 9Overvoltage protection According to EN 61000-4-5Sensor connectionThe oxygen sensors are supplied with a measuring cable. Use a junction box and a cable to extend this measuring cable (see Accessories).4COS41 to COM2x3-DX/DS5COS61 to COM2x3-WX/WSPerformance characteristicsReference operatingconditionsReference temperature:25 ˚C (77 ˚F)Reference pressure:1013 hPa (15 psi)Reference application:Air-saturated waterMeasured value resolutionOxygen0.01 mg/l / 0.1 % SAT / 1 hPa Temperature 0.1 °CMaximum measured errorDisplayOxygen Max. 0.5 % of measuring range Temperature Max. 1.0 % of measuring range Signal outputOxygenMax. 0.75 % of measuring range TemperatureMax. 1.25 % of measuring rangeMeasured errors in accordance with DIN IEC 746 Part 1, at rated operating conditionsRepeatability Max. 0.2 % of measuring range Slope adjustmentCOS4175 to 140 % (nominal 290 nA, in air, 20 °C, 1013 hPa)COS6175 to 140 % (nominal 1340 nA, in air, 20 °C, 1013 hPa)Liquisys M COM223/25310Endress+HauserInstallationInstallation instructionsField device wall mounting6Field device wall mounting 1Fixing bore holes 2Plastic capsField device post mounting7Field device on horizontal or vertical pipes 1Securing screws 2Fixing screws 3Securing plateLiquisys M COM223/2538Field device with universal post and weather protection cover1Bore holes in the weather protection cover to secure to the upright post2Bore holes in the upright post to secure the weather protection cover3Bore holes in the weather protection cover to secure the field devicePanel mounting9Dimensions in mm (inch)1Mounting plate2Seal3Tensioning screws*Necessary installation depthEndress+Hauser11Liquisys M COM223/25312Endress+HauserEnvironmentAmbient temperature range -10 to +55 °C (+10 to +130 °F)Storage temperature –25 to +65 °C (-10 to +150 °F)Electromagnetic compatibility Interference emission and interference immunity as per EN 61326-1:2006, EN 61326-2-3:2006Degree of protection Field deviceIP 65 / integrity according to NEMA 4X Panel-mounted device IP 54 (front), IP 30 (housing)Electrical safety As per EN/IEC 61010-1:2010, overvoltage category II for installations up to 2000 m (6500 ft) above MSLCSA Device versions with CSA General Purpose approval are certified for indoor use.Relative humidity 10 to 95%, not condensingDegree of contamination The product is suitable for pollution degree 2.Mechanical constructionDesign 1234A002464010View into the field device housing 1Removable electronics box 2Terminals 3Partition plate 4FuseLiquisys M COM223/25311Field device: dimensions in mm (inch)12Panel-mounted device: dimensions in mm (inch)Weight Panel-mounted device Max. 0.7 kg (1.54 lbs.)Field device Max. 2.3 kg (5.07 lbs.)Endress+Hauser13Liquisys M COM223/25314Endress+HauserMaterials Panel-mounted device housingPolycarbonate Field housingABS PC FR Front membrane Polyester, UV-resistant TerminalsCable cross-section Max. 2.5 mm 2 (14 AWG)OperabilityOperating concept All the device's operating functions are arranged in a clear menu structure. The individual parameters can be selected and modified once the access code has been entered.Display and operating elementsThe display shows the current measured value and the temperature simultaneously, which means you have an overview of the most important process data at once. Help text in the configuration menu helps users configure the device parameters.13Operating elements 1LC display for displaying the measured values and configuration data 2Key to switch relays in manual mode and to display the active contact 3LED for alarm function 4Changeover switch for automatic/manual mode 5LEDs for limit contactor relay (switch status)6Main operating keys for calibration and device configuration 7Field for user-defined informationCertificates and approvalsmark The product meets the requirements of the harmonized European standards. As such, it complies with the legal specifications of the EC directives. The manufacturer confirms successful testing of theproduct by affixing to it the mark.CSA General PurposeThe following device versions meet the requirements of CSA and ANSI/UL for Canada and the US:•COM253-**2/3/7***•COM223-**2/3/7***Liquisys M COM223/253Endress+Hauser 15Ordering informationProduct page //com253Product Configurator The navigation area is located on the right of the product page.2.Under "Device support" click "Configure your selected product". The Configurator opens in a separate window.3.Select all the options to configure the device in line with your requirements. In this way, you receive a valid and complete order code for the device.4.Export the order code as a PDF or Excel file. To do so, click the appropriate button at the top of the screen.Scope of delivery The delivery of the field device comprises:•1 transmitter COM253•1 plug-in screw terminal, 3-pin •1 cable gland Pg 7•1 cable gland Pg 16 reduced •2 cable glands Pg 13.5•1 set of Operating Instructions •For versions with HART communication:1 set of Operating Instructions: Field communication with HART •For versions with PROFIBUS interface:1 set of Operating Instructions: Field communication with PROFIBUS PA/DPThe delivery of the panel-mounted device comprises:•1 transmitter COM223•1 set of plug-in screw terminals •2 tensioning screws •1 set of Operating Instructions •For versions with HART communication:1 set of Operating Instructions: Field communication with HART •For versions with PROFIBUS interface:1 set of Operating Instructions: Field communication with PROFIBUS PA/DPLiquisys M COM223/25316Endress+HauserAccessoriesThe following are the most important accessories available at the time this documentation was issued. For accessories not listed here, please contact your service or sales office.Sensors Oxymax COS41•Oxygen sensor for drinking water and industrial water measurement, amperometric measuring principle •Material: POM •Product Configurator on the product page: /cos41Technical Information TI00248COxymax COS61•Optical oxygen sensor for drinking water and industrial water measurement •Measuring principle: quenching •Material: stainless steel 1.4571 (AISI 316Ti)•Product Configurator on the product page: /cos61Technical Information TI00387CConnection accessories CMK •Unterminated measuring cable for COS41 oxygen sensors •For extension between VBM junction box and transmitter •Sold by meter, Order No.: 50005374OMK •Unterminated measuring cable for COS61 oxygen sensors •For extension between VS junction box and transmitter •Sold by meter, Order No.: 50004124VBM •Junction box for cable extension •10 terminal strips •Cable entries: 2 x Pg 13.5 or 2 x NPT ½"•Material: aluminum •Degree of protection: IP 65•Order numbers –Cable entries Pg 13.5 : 50003987–Cable entries NPT ½": 51500177VS •Junction box for cable extension of COS61 sensor with SXP plug-in connector •With socket and 7-pin connector •Degree of protection: IP 65•Order number: 50001054Installation accessories CYY101•Weather protection cover for field devices •Absolutely essential for field installation •Material: stainless steel 1.4301 (AISI 304)•Order No. CYY101-A14Dimensions in mm (inch)Liquisys M COM223/253Endress+Hauser 17Post mounting kit •For securing the field housing to horizontal and vertical posts and pipes •Material: stainless steel 1.4301 (AISI 304)•Order No. 5008684215Dimensions in mm (inch)Universal post CYY102•Square pipe for mounting transmitters •Material: stainless steel 1.4301 (AISI 304)•Order No. CYY102-A16Dimensions in mm (inch)。

产品说明:亚健康检测仪(TDS)简介远程健康检测仪（简称：TDS）是一种无创伤、十分钟内全面准确检测人体健康状况的高新技术产品,也是目前国内唯一可对亚健康状态进行量化测定的医疗器械,有人形象地把它称作人体健康的“天气预报”。

它对被检测者存在的倾向性、潜在性疾病作出判断，提出进一步检查或对症调理的防治建议，有利于被检测者把握健康主动权，控制疾病的发生与发展。

研发背景20世纪60年代初，前苏联宇航员进入太空，为及时掌握宇航员的身体状况，前苏联科学院开始从事人体自动反射诊断的应用研究，他们结合中国传统人体经络理论，运用电子设备对人体经络穴位进行测试，发现人体经穴的生物电值能够较准确的反映身体健康状况。

于是集中了一批医学专家，进行深入研究，至八十年代末期，开始初步形成了自动反射诊断系统。

贝斯生命科学研究所根据这一发现，在引进有关技术和成果后，组织中外医学和信息技术专家开展了大量研究和临床应用，从而形成了自己独特的TDS。

亚健康&TDS世界卫生组织（WHO）和我国政府先后在1996年和1998年提出医学新概念——亚健康，并指出这是“健康与疾病之间的临界状态”。

1999年世界卫生组织（WHO）宣告“亚健康与爱滋病是21世纪人类最大的健康敌人”。

根据有关资料显示，目前，在全球60亿人口中，有60%以上的人群处于亚健康状态，在中国约有70％的人群处于亚健康状态，究其原因是没有建立很好的健康预防观念。

从医学理论上说每个健康的人都能活到120－150岁，但现实生活中没有多少人能如此长寿，这是因为从健康到疾病之间有个亚健康状态，或不完满状态即各脏腑的不完满及全身性的不完满，而人们没有重视这个状态，干预这个状态，慢慢地积劳成疾。

亚健康在临床上没有阳性指标，人们无法指出哪个部位是否亚健康，现有的医疗器械也无法测定。

而TDS无需被检测者指明检查项目，在不干扰生命状态的前提下，动态把握多种病理信息，能准确地检查出人体实时机能状态，为动态地观察人体健康——亚健康——疾病状态提供诊断依据，继而针对性地对症调理，实现检测亚健康，干预亚健康，控制疾病发生发展，提高人群健康水平。

中节能（合肥）可再生能源有限公司渗滤液站TDS仪表标定规程1、键盘和面板概览2、主测量屏示例3、传感器校准3.1校准前准备——清洗传感器事先准备：准备温和的肥皂溶液、温水及餐具洗洁精、硼砂洗手液或类似的脂肪酸盐。

定期检查传感器是否存在碎屑和沉淀物。

当形成沉淀物或性能降低时，务必清洗传感器。

1、拆下传感器并小心放置半空中，用干净的软布清除传感器断臂上的碎屑，然后用干净的温水冲洗传感器。

2、将传感器浸入肥皂溶液中2到3分钟。

3、使用试管刷或软毛刷清洗传感器头部环形测量端，小心清洗磁环内部。

4、若仍有碎屑，将传感器放置肥皂液中2到3分钟。

5、使用干净的温水冲洗传感器3.2温度校准正常情况下，仪器已经校准为精确的温度测量值。

若处于极端天气下仪表显示温度值明显不准，则需校准温度以提高测量精度。

1、将传感器放置于存满温水的容器中，并用温度计或温枪（中控室有）测得此时的水温。

2、按Menu键，然后选择“Sensor Setup(传感器设置)——“Select Sensor(选择传感器)——Calibrate(校准)3、选择“1 PT Temp Cal（1点温度校准）”，再按ENTER4、等待数值稳定后按ENTER5、输入之前记录的精确值，再按ENTER6、将传感器重新放入过程溶液，然后按ENTER3.3零点校准程序由于TDS仪表长期处于使用状态，难免需要定期校准。

而校准的步骤首先就是使用零点校准程序定义电导率传感器唯一的零点，只有先定义零点，然后再使用参考溶液或过程试样校准传感器。

1、从过程溶液中取出传感器，使用干净的毛巾擦干传感器。

2、按Menu键，然后选择“Sensor Setep(传感器设置)”——“Select Sensor(选择传感器)”——“Calibrate(校准)”3、按ENTER选择“Zero Cal(零点校准)”。

4、在校准过程中选择输出信号的选项：Active(激活)——仪器在校准过程中发送当前测量的输出值。

地表水监测仪器操作指南说明书一、引言地表水监测仪器是用于监测、分析和评估水体质量的工具。

本操作指南旨在为用户提供关于地表水监测仪器的操作说明，确保正确使用仪器并准确获取监测数据。

二、仪器概述地表水监测仪器由以下主要部件组成：1. 传感器：用于测量水体的不同参数，例如温度、PH值、溶解氧等。

2. 数据采集装置：用于接收、存储和传输传感器采集到的数据。

3. 供电系统：提供仪器所需的电力。

4. 控制面板：用于设置监测参数，显示监测数据以及进行故障排除等操作。

三、操作步骤1. 准备工作a) 确保供电系统正常工作，并接好电源适配器。

b) 检查传感器是否安装到位，确保与数据采集装置连接良好。

c) 打开仪器，等待系统启动，确保控制面板正常显示。

2. 设置参数a) 通过控制面板菜单进入设置界面。

b) 根据监测要求，设置所需的参数，例如监测间隔时间、报警阈值等。

c) 确认参数设置无误后保存并退出设置界面。

3. 开始监测a) 在控制面板上选择“开始监测”选项。

b) 仪器将根据预设参数开始定时监测，并将采集到的数据存储到数据采集装置中。

4. 数据传输与分析a) 使用数据采集装置上的数据传输功能，将监测数据传输至计算机或其他设备。

b) 利用专业的数据分析软件对传输的数据进行处理和分析。

c) 根据实际需要，生成监测数据报告或图表。

5. 故障排除a) 如果仪器出现异常情况，例如显示屏无法正常显示或数据采集不准确等问题，首先检查供电是否正常。

b) 检查传感器与数据采集装置的连接是否牢固。

c) 如果问题仍未解决，联系仪器的售后服务部门或专业维修人员进行检修。

四、注意事项1. 在操作仪器时，应遵循安全操作规程，避免将仪器暴露于极端温度、湿度或强光等环境下。

2. 定期清洁传感器以确保数据的准确性。

3. 严禁将仪器接触到化学物质或放置在含有腐蚀性物质的环境中。

4. 如需更换传感器或进行维修，请联系专业人员进行操作，切勿私自拆卸或修理仪器。

TDS计高精度电导率传感器的使用方法TDS计（ 总溶解固体计）使用高精度电导率传感器来测量水体电导率，进而估算水中的总溶解固体含量。

以下是一般TDS计高精度电导率传感器的可能使用方法：1.准备工作：检查TDS计和电导率传感器的状态，确保设备处于正常工作状态。

如果需要校准或标定，按照设备的说明书进行操作。

2.准备水样：采集待测水体样本，并确保水样具有代表性。

如果需要，根据实际情况对水样进行处理，如过滤或搅拌。

3.电极安装：安装TDS计的电导率传感器。

确保电极清洁，没有污物或氧化物影响电导率测量。

4.连接电源：如果TDS计和电导率传感器需要外部电源供电，将设备连接到电源。

确保电源连接正确并稳定。

5.校准：使用已知电导率的标准水样对TDS计进行校准。

按照设备说明书的指导进行校准步骤，以确保测量的准确性。

6.浸入水样：将TDS计的电导率传感器浸入待测水样中，确保电极与水样充分接触。

7.启动测量：启动TDS计进行测量。

电导率传感器将施加交流电流，测量电流和电压之间的关系，并计算水样的电导率。

8.温度补偿：如果TDS计和电导率传感器具有温度补偿功能，确保温度传感器正常工作，并根据温度变化调整测得的电导率值。

9.记录测量值：记录测得的电导率值和TDS值。

有些设备可能具有显示屏，直接显示测量结果，而其他设备可能通过连接到计算机或数据记录器来记录数据。

10.清洁和维护：测量完成后，及时清洁电导率传感器以防止污染，同时按照设备说明书的建议进行维护，以确保设备的长期稳定性。

11.关机：关闭TDS计的电源，将设备置于适当的存储位置。

需要注意的是，具体的TDS计和电导率传感器使用方法可能有所不同，因此在使用之前，务必详细阅读设备的说明书以了解其特定型号的操作方式和功能。

此外，根据需要，定期进行设备的校准和维护，以确保其准确性和可靠性。

Specifications - Installation and Operating InstructionsBulletin TE-TDS2-10SPECIFICATIONSWetted Materials:ABS plastic and 316 SS.Range:Conductivity: 0 to 1999 uS or 0 to 19.99 mS;TDS: 0 to 1999 ppm or 0 to 19.99 ppt.Accuracy: ±1% FS.Display: 30(H) x 18(W) mm LCD dual display.Resolution:Conductivity: 1uS or .01 mS;TDS: 1 ppm or .01 ppt.Temperature Range: 32 to 122°F (0 to 50°C).Power Requirements: 4 LR44 batteries, 1.5 V ea.Enclosure Rating:IP65.Weight:4.3 oz (115 g).Agency Approval: CE.instrument.- C or F is the unit of the liquid temperature.- is the battery low icon.Keypad1. Remove the probe cover from the meter to expose the electrode.2. Press to power on the meter. The LCD will display parameters (ex: tnr, tCo, tds,rAn) in turns and then it will enter normal display.3. The meter is default in auto-ranging status once powered on. Auto-rangingyou prefer the meter to display a reading such as .50 mS instead of 500 uS, you press for more than 2 seconds.measurement mode. When the reading is stable, the unit will stop flashing.10. Press to freeze current readings. The text “Hold” will appear on the LCD. Pressagain to release.11. Turn off the meter by pressing .12. Make sure your electrode is clean and store it carefully. Before storage, rinse it To disable the auto power off:Before power on, press + simultaneously until an “n” appears on the screen. Then, release the keys to return to normal mode.The advanced setup mode lets you customize your meter’s preferences and defaults. To change the parameters, you can press for more than 2 seconds. You will enter setup mode when the meter is in measurement mode.1. When the meter is in measurement mode, press f for more than 2 seconds toenter setup mode.2. Press , , or to select P1.0.3. Press momentarily again to enter unit setting.4. Press or to select C or F.5. Press momentarily to confirm the unit, or press it for more than 2 seconds toreturn to P1.0 without saving.6. While in P1.0, press for more than 2 seconds to return to measurement mode.1. In P3.0, press momentarily to enter P3.1.2. Press or to select Y or N.3. Press momentarily to confirm the state and return to P3.0, or press it for morethan 2 seconds to return to P3.0 without confirming the P3.1 value.P4.0 Review Calibration Information (CAL)In P3.0, press or to select P4.0.P4.1 Range 1 Calibration Informationpress momentarilyconcentration. If the meter is not yet calibrated, “---”will display on the LCD.In P4.1 or P4.2, press momentarily to confirm the state and return to P4.0. In P1.0, P2.0, P3.0, P4.0, you can press for more than 2 seconds to return to1. Turn off the meter and stay in normal measurement mode.2. Press or for more than 2 seconds to select the range.temperature.7. Press for more than 2 seconds to begin the calibration. The conductivity andTDS value will blink on the LCD.8. Press the or to adjust the value to match the value to the calibrationstandard. You can adjust the conductivity or TDS reading up to ±30% from the 9. When the “CAL” stops blinking, you can press to confirm the value. The meterwill switch back to conductivity and TDS measurement mode. If “CAL” always©Copyright 2012 Dwyer Instruments, Inc.Printed in U.S.A. 6/12FR#R6-444017-00 Rev. 1 DWYER INSTRUMENTS, INC. Phone: 219/P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057e-mail:*******************。

tds技术说明书TDS技术说明书概述：TDS（Total Dissolved Solids）技术又称总溶解固体技术，是指将水中所有的溶解性无机和有机物的总量测定出来，并通常以ppm（part per million，百万分之一）或mg/L（毫克/升）为单位表达。

TDS技术广泛应用于水质分析、食品工业、药品制造、环境监测等领域，在水处理行业中尤为常见。

原理：TDS技术的原理是通过导电度来测量溶解于水中的离子的总含量。

水中的离子会导电，因此通过在两个导电板之间测量电阻，可以计算出水中的总溶解固体量。

TDS含量是影响水质的一个重要因素，不同的水源因地理位置和环境的不同，TDS 含量也会有所不同，因此合理的TDS含量是需要根据具体情况来确定的。

应用：1. 水质分析：TDS技术在水质分析中被广泛应用，水中的总溶解固体量是影响其质量的一个重要因素，TDS检测能够快速、准确地测量水中溶解物质的含量。

2. 食品工业：TDS技术在食品加工过程中也有应用，例如在咖啡、茶叶、果汁等饮品中添加水时，水中的TDS含量会影响饮品的味道和色泽，因此需要及时检测水质。

3. 药品制造：药品中含有很多溶解于水中的成分，TDS 技术可以快速测量药品中的总溶解固体量，确保药品质量。

4. 环境监测：在环境监测中，TDS技术可以用来测量地下水、表面水和废水等中的总溶解固体量，以确定水体的污染程度。

检测方法：目前常用的检测方法有电导法和重量法两种。

1. 电导法：电导法是通过测量水中电导率来确定TDS含量的一种方法。

电导率是由水中溶解物质的离子浓度、种类和温度等因素决定的，因此需要在测量之前进行标定和校正。

2. 重量法：重量法是通过蒸发水样，将溶解在水中的固体物质浓缩并称重，然后计算其质量含量的方法。

这种方法比较直接，但时间较长，适用于检测较小的样品。

总结：总溶解固体（TDS）技术是一种广泛应用于水质分析、食品工业、药品制造、环境监测等领域的检测方法。

A guide to product lifespansnormal wear? Damage i.e. breaking something is not wear and tear – meaning either replacement or repair. Light marks on a carpet might have to be viewed as unavoidable. On the contribution to the cost of redecoration from the tenant to be unreasonable.In considering whether cleaning/repair is necessary versus complete replacement at the end of the tenancy, an adjudicator will examine the check-in/out reports, any statements of condition and any photographs or videos in order to compare the condition of the property at the start and end of the tenancy. In some cases, the damage may not be so extensive as to require the complete replacement of an item at the tenantsexpense (such as a kitchen worktop or carpet); however the adjudicator will award sums in recognition of any damage which has occurred. Whilst the landlord may wish to replace a damaged item, it is not always the case, even where the damage is admitted by the tenant, that the extent of the damage is such that the tenant should automatically bear the full replacement cost. In circumstances where damage to the property is so extensive or severe as to affect the achievable rent level or market quality, the most appropriate remedy might be replacement and to apportion costs according to the age and useful lifespan of the item. Click here to access more information about how disputes involving dmaged items would be approached by TDS.An example of how this might be calculated is set out below:Cost of similar replacement carpet/item - £500.00 Actual age of existing carpet/item – 2 years Average useful lifespan of that type ofcarpet/item – 5 yearsResidual lifespan of carpet/item calculatedas (c) less (b) – 3 yearsDepreciation of value rate calculated as(a) divided by (c) – £100 per yearReasonable apportionment cost to tenant calculated as (d) times (e) – £300.00Please note that, the adjudicator must make a decision that is reasonable in view of the evidence that is presented to them by the parties in that particular dispute. Therefore, it may not always be appropriate to apply this approach.If you are not yet a member of the NRLA, click here to join and receive £15 off membership!TDS InsuredNRLA members receive the leading deposit protection rates with TDS! Protect your tenant’s deposit with TDS Insured, via your NRLA member dashboard.Have any outstanding deposits to protect?TDS CustodialAs a NRLA member, you can alsoprotect your tenant’s deposit today for FREE with TDS Custodial, via your NRLA member dashboard.Not yet ready to join the NRLA? Protect your deposits today with TDS.NRLA help landlords understand the legislation that surrounds rentedproperties, which include common factors such as the ones above. They offer some of the most comprehensive learning resources and market-leading intelligence available in the sector.********************************* 0300 037 1000。