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.

Sales contact

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
PT4000 ORP Controller

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 NameTimeTypeDownload
PT4000 ORP ControllerSep 26, 2025PDF

Technical Parameters

ModelPT4000
Measuring RangepH: 0-14pH
ORP: －2000～＋2000mV
Temperature: -10~150℃
AccuracypH: ±0.01pH/±0.02pH
ORP: ±2mV/±5mV
Temperature: ±0.3℃
ResolutionpH: 0.01pH
ORP: 1mV
Temperature: 0.1℃
Temperature Compensation Range0～150℃
Temperature CompensationAutomatically or manually
Output2-channels 0/4~20mA, 20~4mA
CommunicationRS485 Modbus RTU
Relay Output2 groups: 3A 250VAC, 3A 30VDC
Power Supply85~265VAC; 9~36VDC
Installation MethodEmbedded type or Wall mountd
Protection ClassController IP65

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