Top Suppliers Ph Controller With Dosing Pump - Conductivity TDS Controller – JIRS

Description ◇ English language display. ◇ Measure Conductivity/TDS/Resistivity and Temperature. ◇ High/low limit relay control output , 4-20mAcurrent output. digital Modbus RS485 communication output (Optional). ◇ High/low limit alarm light, double relay, alarm delay could be set. ◇ Instrument mode isolated transmitting port, max circle resistance up to 750Ω. ◇ PID control to actuate and control powered variable value through 4-20 mA output (optional). ◇ Back light of LCD could select power saving mode, timing automatic off, brightness adjust. ◇ Conductivity constant input directly function or to calibrate probe constant as per known calibration solution’s conductivity value. ◇ High performance CPU, good electromagnetic compatibility. ◇ MOV and AC input be fused function. ◇ ESD over voltage protection is available. ◇ Password management avoid non-professional person to operate. Main Technique Specifications

 Function Model

EC/TDS/RM-6850 Conductivity /TDS /Resistivity controller

Measuring Range


0-200uS ( 0.1sensor),

0-20, 000uS(1.0 sensor),

0-200mS (10.0 sensor)


0-100ppm(0.1 sensor),

0-10,000ppm(1.0 sensor)


0-18.25MΩ·cm  (0.01 sensor)

0-18250KΩ·cm  (0.01 sensor)


+ 1.5% (FS)

Temp. Comp.

0~120 ℃, Automatic, PT1000

Sensor constant

0.01, 0.1, 1.0, 10.0 cm-1

Sensor connection

1/2”NPT (standard), 3/4”NPT(optional), Flanged (optional)

Sensor cable length

5m or as per request


128 * 64 dot matrix LCD

Current output signal

Isolated, Transferable 4-20mA signal output,

max circle resistance 750Ω 

Control output signal

High/Low Limit relay control output, (3A/250 V AC)

Communication signal

Modbus RTU RS485 (optional)


AC 220V ±10%, 50Hz (Standard)

AC110V ±10%, 50Hz (Optional)

AC/DC 24V(optional) 

Working temperature.


0~100℃ (Match high temp. Sensor)

Working pressure


Protection grade

IP 65

Working environment

Ambient Temp. 0~60℃, Relative Humidity ≤95%

Overall dimensions


Hole dimensions


Installation Mode

Panel Mounted(Embeded)

Application Widely used for electronic, Chemical, Pharmaceutical, electromechanical, drinking water, cooling tower, boiler plant and other industries for online conductivity, resistivity controller.