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ORP Controller & Analyzer ORP101
Water Quality Controllers & Analyzers

ORP Controller & Analyzer ORP101

Model ORP101

Online ORP (redox) controller, −1999 to +1999 mV, ±2 mV accuracy, 3 alarm relays, 4–20 mA and RS485 Modbus RTU. For disinfection and chemical treatment control.

  • −1999 to +1999 mV range
  • ±2 mV accuracy, 1 mV resolution
  • 3 relays for dosing and alarms
  • 4–20 mA + RS485 Modbus RTU
  • IP65, panel or wall mount

ORP101 specifications

Measuring range−1999 to +1999 mV
Accuracy±2 mV, ±0.2 °C
Resolution1 mV, 0.1 °C
Relay alarm output3 relays, high/low point trigger
Signal output4–20 mA / RS485 Modbus RTU
Power supply100–240 VAC or 24 VDC, 50/60 Hz
Dimensions96 × 96 × 128 mm (H × W × D)
Panel cut-out92 × 92 mm (H × W)
ProtectionIP65
Calibration2-point calibration
InstallationWall or panel mounting
Weight0.5 kg
Temperature compensationPT1000, NTC10K, manual

Oxidation-reduction potential (ORP) shows how strongly oxidising or reducing the water is. The ORP101 uses it to control chlorine or ozone disinfection, cyanide oxidation and hexavalent chrome reduction in effluent treatment, and to confirm that cooling and pool water stays sanitised.

Three relays switch dosing pumps at your set points, while the 4–20 mA and RS485 Modbus outputs send the reading to your PLC or SCADA.

Typical applications

  • Chlorine and ozone disinfection control
  • Cyanide and chrome treatment in electroplating ETPs
  • Swimming pools and water parks
  • Cooling tower biocide control

Send us the application details and we will confirm the right configuration and lead time.

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