SH-TDS200 TDS digital sensor

SH-TDS200 TDS digital sensor


The SH-TDS-200 Total Dissolved Solids digital sensor has a built-in NTC temperature sensor and a compensation algorithm that automatically compensates for the effect of temperature on the measured value. The sensor uses RS485 interface and standard Modbus protocol.


Product features

  • Electrode constants are stable and unaffected by polarization
  • With automatic temperature compensation function
  • Internal storage of calibration data
  • Corrosion-resistant housing, waterproof grade IP68, can work underwater for a long time
  • RS485 communication interface, standard Modbus protocol for easy integration.


Technical specifications

Working principle Two electrodes/four electrodes
Measurement range (0~2500/150000) mg/L, other ranges can be customized; Temp.: (0~50) °C
Repeatability <1 %
Accuracy ± 1 %
Drift (24h) <1% F.S.
Resolution 0,01 mg/L
Response time 10 s
Protection class IP68
Comm. interface RS485, standard Modbus protocol baud, rate 9600
Dimensions (φ33*224) mm/(φ16*180) mm, cable 10m (customizable)
Weight 0,5 kg
Materials 316 Stainless-steel/PVC/POM/Titanium alloy available
Mounting threads NPT3/4 thread on top, NPT3/4 male thread on bottom available
Operating voltage 9~36 Vdc
Power consumption 0.4 W
Calibration period 1-3 months
Max. depth 30 meters
Operating temp. (0~50) °C


Product applications

Surface water, municipal and industrial wastewater, industrial process water, drinking water