How to build a Conductivity Measurement System

Transcription

1 How to build a Measurement System F B E C D A A Immersion system in open basin B Flow-through system C 1/2 pipe mounted system D 3/4 pipe mounted system E Side-entry system in vessel F Top-entry system in closed vessel There are four major elements to make a complete measurement system 1. Transmitter: to translate the sensor s reading into a displayed measurement and transfer the data to the process control system 2. Sensor: directly mounted in the field to measure solutions 3. Cable: to transmit the signal between a sensor and a transmitter 4. Sensor Connection:to install the sensor and connect to the system, and protect the sensor in the measurement solutions

2 Illustration of Sensor Installation 2-Electrode Sensor 4-Electrode Sensor Correct Installation Less than 28 mm Less than 28 mm To avoid bubbles To avoid bubbles Incorrect Installation Insufficient immersion Insufficient immersion Insufficient immersion Insufficient immersion

3 EC-4300 Transmitter Robust protection and second output The EC-4300 conductivity transmitter has rugged IP 65 enclosure and can be wall, panel, pipe mounted for installation in almost any industrial application. With the second current output for temperature, EC-4300 is extremely ideal instrument for process applications. The transmitter inherits our reliable technology which features in accurate, robust, and easy to use functions. Applications: RO System Cooling Water Industrial Process Boiling Feed Water Ultra Pure Water System Water Treatment Features:,, Salinity, measurement IP 65 waterproof and dustproof design Back-lit LCD with ON/OFF/Auto programmable illumination Two sets of isolated current output DC 0/4~20mA according to measurement and temperature Two Hi/Lo Limited contact outputs;set points with programmable hysteresis function Automatic temperature compensation External washing switch function with programmable time-interval control LED indication alarm or wash status signal Password protection Model EC μS/cm~200.0 ms/cm in 6 ranges / Auto, ±1% (± 1Digit) Measuring 0.00~20.00MΩ.cm, ±1% (± 1Digit) range Salinity 0.0~70.0 ppt, ±1% (± 1Digit) & Accuracy -30.0~130.0 C, ±0.2 C (± 1Digit) Cell constant 0.01, 0.1, 0.7, cm -1 fixed, freely selectable ~19.99cm -1 Compensation coefficient Set point Wash Display Analog output 1 Analog output 2 Power Supply Installation Dimensions Contact Activate Contact Time Automatic with PT-1000 or NTC 30K or manual adjustment Linear compensation from 0.00~20.00% Back-lit LCD display with on/off/auto illumination Isolated DC 0/4~20 ma corresponding to measurement, max load 500Ω Isolated DC 0/4~20 ma corresponding to temperature, max load 500Ω 240 VAC, 0.5A max. Hi/Lo two limited programmable relay outputs One On/Off relay output, 240 VAC, 0.5A max. ON: 0~9999 sec. / OFF: 0~999.9 hours Switching power 88 ~ 265 VAC, 50~60 Hz Wall mounting, Pipe mounting, Panel mounting 144 mm x 144mm x 115 mm (H x W x D), 1/2 DIN Cut off dimensions 138 mm x 138 mm (H x W) Weight 0.8 kg Protection IP 65 (NEMX 4X) What s included? 4 panel mounting clips

4 EC-4200 Dual Channel Transmitter Cost-effective and % Rejection calculation The EC-4200 conductivity transmitter offers dual channel system in one instrument for saving your space and your cost. The built-in % rejection function is designed for indicating the performance of the water purification and controlling your relative systems. Applications: RO System Cooling Water Industrial Process Boiling Feed Water Ultra Pure Water System Water Treatment Features: Dual channel or single channel selectable for measuring conductivity, resistivity, % rejection, and temperature Menu driven display for easy operation Elegant, watertight, robust design with transparent cover Wash function relay output for external filter equipment Backup calibration data and setup parameters Independent Hi/Lo Limited contact output for dual channel Automatic temperature compensation LED indication alarm or wash status signal Model EC μS/cm~200.0 ms/cm (± 1Digit) Measuring 0.00~20.00MΩ.cm, ±1% (± 1Digit) range % Rejection 0.0~100.0%, ±0.01% (± 1Digit) & Accuracy 0.0~100.0 C, ±0.5 C Cell constant freely selectable ~ cm -1 Compensation coefficient Display Electrode status alarm Analog output 1 Set point Wash Analog output 2 Alarm output Power Supply Installation Dimensions Contact Activate Contact Time Automatic with PT-1000 or NTC 30K or manual adjustment Linear compensation from 0.00~5.00% Graphic LCD display Dual channel simultaneously or Ch 1/Ch 2 single display Yes Isolated DC 0/4~20 ma corresponding to ch 1 measurement, max load 500Ω Isolated DC 0/4~20 ma corresponding to ch 2 measurement, max load 500Ω One Hi/Lo relay output, 240 VAC, 2A max. 240 VAC, 2A max. Independent Hi/Lo two limited programmable relay for dual channel One relay output, 240 VAC, 2A max. (only activate in the display of % rejection) ON: 0~9999 sec. / OFF: 0~999.9 hours 115 or 230 VAC ±15%, 50/60 Hz Panel mounting 144 mm x 144mm x 195 mm (H x W x D), 1/2 DIN Cut off dimensions 135 mm x 135 mm (H x W) Weight What s included? Panel mounting kit 1.9 kg

5 EC-410/EC-430 Monitor Compact and Pragmatic The EC-410& EC-430 conductivity monitors utilize microprocessor technology provides you enhanced capabilities with economic price. The compact design fits in small space installation. The EC-410 features for water quality monitoring and the EC-430 offers one relay output to sufficiently activate your process system. Applications: RO System Cooling Water Industrial Process Boiling Feed Water Ultra Pure Water System Water Treatment Features: 48 x 96 mm Microprocessor Water Quality Monitor & Controller Compatible with both and resistivity measurement Compatible with 2-Electrode or 4-Electrode Sensors Automatic temperature compensation Compatible with Pt-1000 and NTC 30K temperature probe Linear and non-linear temperature coefficient Isolated current output DC 0/4~20mA EC-430 offers one relay contact output, one set point with programmable hysteresis function Model EC-410 EC-430 Measuring 0.00μS/cm~200.0 ms/cm in 5 ranges, ±1% (± 1Digit) Range 0.00~20.00MΩ.cm, ±1% (± 1Digit) & Accuracy 0~100.0 C, ±0.5 C Cell constant 0.01, 0.05, 0.7, 1.00, cm -1 fixed, freely selectable 0.001~19.99cm -1 Compensation coefficient Set point Display Analog output Power Supply Installation Dimensions Automatic with PT-1000 or NTC 30K or no compensation Linear compensation from 0.00~20.00% LCD display Isolated DC 0/4~20 ma corresponding to measurement, max load 500Ω Contact VAC, 0.5A max. Activate - Hi/Lo one relay output Switching power 88 ~ 265 VAC, 50~60 Hz Panel mounting 48 mm x 96mm x 110 mm (H x W x D), 1/8 DIN Cut off dimensions 44 mm x 92 mm (H x W) Weight What s included? 2 Panel mounting clips 0.25 kg

6 8-22X Series Sensor 2-Electrode Design The 8-22X series resistivity sensors are designed for measuring very low conductivity solutions in RO system, pure water and ultra-pure water system. With different cell constant, the 8-22X sensors provide different range of measurement. Its modular cable and sensor design provides the most convenience of sensor re-installation. Specifications 8-22X Series Model Type 2-electrode sensor 2-electrode sensor Typical application D.I. water R.O. system Range (μs/cm) (MΩ.cm) 0.05μs~100.0μs/cm 0~20.0MΩ.cm 0.1μs~200.0μs/cm 0~10.0MΩ.cm Working Temp. 0~80 C 0~80 C Pressure range at 25 C (77 F) 0~7 bar 0~7 bar T-Connector Electrode Material Titanium Titanium Body Material CPVC CPVC Sensor NTC 30K NTC 30K Cell Constant 0.05 cm cm -1 Process Connection 3/4" NPT 3/4" NPT Insertion length 63 mm 48 mm Accessory Max. length 144 mm 129 mm Compatible Cable length 5, 10, 20, 30, 50m 5, 10, 20, 30, 50m Flow-through chamber Model 8-TF01 8-TF02 Description 3/4 T-Connector 3/4 NPT flow-through chamber Cable Model Cable Cable length 5 m 10 m 20 m 30 m 50 m

7 8-24X Series Sensor 4-Electrode Design The 8-24X series conductivity sensors apply the state of art 4-Electrode measurement principle to accurately measure medium to high conductivity solutions. Its modular cable and sensor design provides the most convenience of sensor re-installation. Specifications / (gray) 8-242(light yellow) Model Type 4-electrode sensor 4-electrode sensor 4-electrode sensor Range (μs/cm) 1.00μs~200.0ms/cm 1.00μs~200.0ms/cm 1.00μs~200.0ms/cm Working Temp. 0~80 C 0~80 C 0~120 C Pressure range at 25 C (77 C) 0~7 bar 0~7 bar 0~7 bar Electrode Material Titanium, CPVC Monel, CPVC Titanium, PVDF Body Material CPVC CPVC PVDF HF Resistant electrode - Yes - Sensor NTC 30K NTC 30K NTC 30K Cell Constant 0.7 cm cm cm -1 Process Connection 3/4" NPT 3/4" NPT 3/4" NPT Insertion length 40 mm 40 mm 40 mm Max. length 120 mm 120 mm 120 mm Compatible Cable length 5, 10, 20, 30, 50m 5, 10, 20, 30, 50m 5, 10, 20, 30, 50m Accessory Model 8-TF01 8-TF02 Description 3/4 T-Connector 3/4 NPT flow-through chamber Cable Model T-Connector Cable length 5 m 10 m 20 m 30 m 50 m Flow-through chamber '' '' '' 3/4" 8-24X Series Cable

8 Fixed Cable Sensor 8-11 Series Cell The 8-11 Series resistivity cells features in both economic and robust design. The cells are designed for measuring in very low conductivity solutions of resistivity measurement Series Specifications Model Type 2-electrode sensor 2-electrode sensor Range (μs/cm) (MΩ.cm) 0.05 ~1.00μs/cm 1.0~20.0MΩ.cm 0.05 ~1.00μs/cm 1.0~20.0MΩ.cm Electrode Material SS 316L SS 316L Sensor NTC 30K NTC 30K Cell Constant 0.05 cm cm -1 Process Connection 1/2" NPT 1/2" NPT Insertion length 90 mm 90 mm Cable length 10 m 20 m Accessory Model Description 8-TF021 1/2 NPT flow-through chamber 8-11 Series