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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PT4000 ORP Controller

Features

LCD color display
Intelligent menu operation
4-20mA/RS485 output
Two relay control switches
Manual and automatic temperature compensation
High & Low alarm and hysteresis control

Applications

Power Plants
Petrochemicals
Metallurgy and Electronics
Mining
Papermaking
Biological Fermentation Engineering
Medicine
Food And Beverage
Environmental Water Treatment
Aquaculture
Modern Agricultural Planting

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Advantages

Multiple automatic calibration functions
Same interface display of pH/ORP, temperature, status, etc.
Password protection to prevent non-staff from misoperation

The digital orp meter with electrode is an online water quality monitoring and control instrument with a microprocessor. It features orp meter with automatic calibration. The controller is equipped with different types of pH electrodes or ORP electrodes and is widely used in various industries.

Resources

Datasheet

File Name	Time	Type	Download
PT4000 ORP Controller	Sep 26, 2025	PDF

Technical Parameters

Model	PT4000
Measuring Range	pH: 0-14pH ORP: －2000～＋2000mV Temperature: -10~150℃
Accuracy	pH: ±0.01pH/±0.02pH ORP: ±2mV/±5mV Temperature: ±0.3℃
Resolution	pH: 0.01pH ORP: 1mV Temperature: 0.1℃
Temperature Compensation Range	0～150℃
Temperature Compensation	Automatically or manually
Output	2-channels 0/4~20mA, 20~4mA
Communication	RS485 Modbus RTU
Relay Output	2 groups: 3A 250VAC, 3A 30VDC
Power Supply	85~265VAC; 9~36VDC
Installation Method	Embedded type or Wall mountd
Protection Class	Controller IP65

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