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

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 Name	Time	Type	Download
PCS3740PCD Digital Conductivity TDS Salinity Sensor	Sep 28, 2025	PDF

Technical Parameters

Model	PCS3740PCD
Measuring Range	Conductivity: 0-500ms/cm TDS: 0-250g/L Salinity: 0-700ppt
Accuracy	±1%F.S
Signal Output	RS485 MODBUS RTU
Power Supply	9~36VDC
Electrode Material	Graphite
Body Material	PP + ABS
Waterproof Class	IP68
Pressure Range	≤0.6Mpa
Temperature Compensation	NTC10K
Temperature Range	0-60℃
Calibration	Sample calibration, standard solution calibration
Connection Method	4-core cable
Cable Length	10m cable as standard (max 100m)
Installation Thread	NPT3/4''/Submerged
Installation requirement	Distance >5cm from sensor to the bottom of liquid
Scope of application	General application, drinking water, industrial water, river and lake water quality

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