ORP Sensor and Meter

ORP is an abbreviation for “Oxidation Reduction Potential”. The ORP meter consists of an electrode that is used as a probe or sensor to measure the redox potential of water. The ORP meters are used when the water quality in terms of sanitization or contamination is to be measured. It is greatly used in general application, industrial water, environmental sewage, river and lake water quality. Pokcenser provides industrial orp sensor with display and orp sensor with modbus protocol.

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Pokcenser Automation Technology Co., Ltd

Mobile: +86 181 7515 5326

Email: info@pokcenser.com

Tel: +86-731-8229 9492

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PCS3740PCD Digital Conductivity TDS Salinity Sensor

Features

  • 2 or 4 electrodes measurement design, anti-interference of ion cloud.
  • 316L stainless steel/graphite wetted part has strong pollution resistance.
  • Measuring Range: Conductivity: 0-30ms/cm; 0-500ms/cm, TDS: 0-15g/L; 0-250g/L, Salinity: 0-18ppt; 0-700ppt
  • With temperature measurement and temperature compensation
  • Simple installation: Submerged or NPT3/4 thread connection
PCS3740PCD Digital Conductivity TDS Salinity Sensor
PCS3740PCD Digital Conductivity TDS Salinity Sensor
PCS3740PCD Digital Conductivity TDS Salinity Sensor

Applications

  • Aquaculture
  • Purified water
  • Drinking water
  • Surface water
  • Various water supplies
  • Industrial wastewater treatment
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Advantages

  • High accuracy and linearity, the wire impedance does not affect the test accuracy.
  • The electrode coefficient is highly consistent.
  • Digital sensor, strong anti-interference ability, high stability, long transmission distance.

The conductivity sensor with modbus protocol is a multi parameters measurement water quality sensor, for continuous monitoring and control of conductivity / TDS / salinity and temperature values of aqueous solutions. The digital ec meter with probe has IP68 waterproof.

Resources

Datasheet

File NameTimeTypeDownload
PCS3740PCD Digital Conductivity TDS Salinity SensorSep 28, 2025PDF

Technical Parameters

ModelPCS3740PCD
Measuring RangeConductivity: 0-500ms/cm
TDS: 0-250g/L
Salinity: 0-700ppt
Accuracy±1%F.S
Signal OutputRS485 MODBUS RTU
Power Supply9~36VDC
Electrode MaterialGraphite
Body MaterialPP + ABS
Waterproof ClassIP68
Pressure Range≤0.6Mpa
Temperature CompensationNTC10K
Temperature Range0-60℃
CalibrationSample calibration, standard solution calibration
Connection Method4-core cable
Cable Length10m cable as standard (max 100m)
Installation ThreadNPT3/4''/Submerged
Installation requirementDistance >5cm from sensor to the bottom of liquid
Scope of applicationGeneral application, drinking water, industrial water,
river and lake water quality

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