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Wall Mounted ORP Digital Controller with Single Setpoint and Matching Pin HI22111

The HI22111 controller is a simple, microprocessor-based ORP process controller specifically designed to meet your process control requirements. A host of self testing features and user-friendly functions make HI22211 a great value.

  • Fail Safe Alarm System.
  • CAL Check™ alerts users of calibration status.
  • RS485 capability makes this model PC compatible.


Fail Safe Alarm System

  • Hanna’s exclusive Fail Safe Alarm System protects against problems caused by power supply failure or signal interruption, which are typical risks in industrial environments. An alarm condition is indicated by a red LED, located directly on the front panel of the controller.

Simple Installation

  • HI22111 has mounting holes molded into the housing to assure simple, quick and secure installation without the need for additional hardware.

Isolated Recorder Output

  • To enhance troubleshooting and the ability to record data while monitoring, simply attach a recording device to the instrument’s 4 to 20 mA output contacts, conveniently located on the front panel, to obtain a copy of the results on demand.

Matching Pin

  • A differential input prevents problems due to ground loop current, extending the life of the electrodes.

Quality Construction

  • Housed in a rugged, modular, fiber-reinforced polypropylene housing that will resist the harmful effects of most chemicals.

Password Protection

  • The Hanna password protection feature keeps these controllers safe from tampering. Only users with the proper password can change the settings of these controllers.

Additional information

Weight 1 kg


Temperature Accuracy

±0.5 °C

Temperature Range

-9.9 to 120.0 °C


SKU HI22111-1
Name Wall Mounted ORP Digital Controller with Single Setpoint and Matching Pin HI22111
ORP Range ±2000 mV
ORP Resolution 1 mV
ORP Accuracy ±2 mV
Temperature Range -9.9 to 120.0 °C
Temperature Resolution 0.1 °C
Temperature Accuracy ±0.5 °C
Consent Relay electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A – 30 VDC (resistive load) (HI211YZ and HI212YZ), fuse protected: 5A, 250V fast fuse
Alarm Relay Set Point electromechanical relay SPDT contact output, 5A – 250 VAC, 5A – 30 VDC (resistive load) fuse protected: 5A, 250V, 250V fast fuse
Analog Ouput Signal 0 to 1 mA, 0 to 20 mA, 4 to 20 mA; 0 to 5 VDC, 1 to 5 VDC, 0 to 10 VDC
Digital Output Signal RS485
Power Consumption 15 VA
Over Current Protection 400 mA, 250V, fast fuse
Power Supply 115 VAC ±10%
Environment 0 to 50°C (32 to 122°F); RH max. 85% non-condensing
IP Rating IP54
Dimensions 221 x 181 x 86 mm (8.7 x 7.1 x 3.4”)
Weight 1.4

Ordering Info

Supplied with instructions.


Wall Mounted ORP Digital Controller with Single Setpoint and Matching Pin HI22111