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HI-22111-2 Industrial Grade ORP Digital Controller

HI-22111-2 Industrial Grade ORP Digital Controller

HI-22111-2 Industrial Grade ORP Digital Controller

HI-22111-2 Industrial Grade ORP Digital Controller

£894.60 (exc. VAT) £1,073.52 (inc. VAT)

The HI-22 controllers have been engineered with the same outstanding quality and features as the HI-21 meters. The microprocessor memory is fully programmable and has a 3-month backup power supply. The Fail Safe Alarm system protects these meters against the pitfall of process control.

HI-22111-2 Industrial Grade ORP Digital Controller information

Hanna's extended description

Industrial grade ORP digital controller

The HI 22111-02 controller has been engineered with outstanding quality and features.

The Fail Safe Alarm System protects this meter against the pitfall of process control, like power interruption or line failure. User selectable timing capability safeguards against overdosing and saves money while protecting the environment. RS485 capability makes this model PC compatible. The microprocessor memory is fully programmable and has a 3-month backup power supply.

The HI 22111-02 haS a differential input, extending electrode life by eliminating ground loop current through the reference. Users can choose between ON/OFF and proportional control as well as selectable current and voltage outputs. For more flexibility and better resolution for chart recorders, choose any two points between 0 and ±2000 mV to correspond to the analogue output spans.

Key features
  • Fully customisable
  • RS485 interface
  • Differential input for ground loop protection
  • Automatic two point ORP calibration
  • Last calibration data
  • Password protection
  • Fail Safe Alarm System
  • Overdosing safeguard

  • Order information
  • HI 22111-2: single setpoint, on/off controls, analog output, 230V

  • This meter comes supplied with instructions.

    Wall-Mounted Process Controllers

    Simple to Use

    The large, dual-level LCD shows both primary measurement and temperature and guides operators through calibration and programming with step-by-step prompts. The choice of ON/OFF, proportional and PID control provides extra versatility and makes it possible to pick the process controller that best fits your application. Keeping track of multiple controllers in different plants is made easy. These advanced controllers can be identified with both a factory and process ID.

    Fail Safe Protection

    The Fail Safe Alarms protect processes against critical errors arising from power interruptions, surges and human errors. The sophisticated yet easy to use system resolves these problems on two fronts: hardware and software. To eliminate blackout and line failure problems, the alarm function operates in a “normally closed” state and goes off if the wires are accidentally tripped, or when the power is down. This is an important feature since with most meters the alarm terminals close in abnormal situations, but no alarm is sounded with a line interruption, causing extensive damage. With our controllers, software is employed to set off the alarm in abnormal circumstances, for example, if the dosing terminals are closed too long a red LED will provide a visual warning signal.

    Differential Input (Matching Pin)

    All Hanna controllers in this family come with a differential input to prevent problems due to ground loop current. With this new feature, the life of the electrodes will be greatly extended.

    Save Money with Custom Programs

    HI-22 help to prevent overdosing or costly system failures. You can set your high and low set point hysteresis bands independently to fine tune dosing processes with the ON/OFF controllers. Similarly, the proportional band and time period are user-programmable to save on slow reacting chemicals which are commonly overdosed.

    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.

    All models offer an adjustable overdosing timer from 10 minutes to 7 days as the maximum time that the relay contacts may remain closed - An important feature in case of sudden chemical depletion, truncated intake or discharge tubing and other calamities.

    Simple Installation

    These wall mounted controllers have mounting holes moulded into the housing to assure simple, quick and secure installation without the need for additional hardware. Once all electrical connections are made, the protective cover can be installed over the front panel, making it possible to perform all adjustments without disassembling any part of the unit. Temperature probes can also be installed. Pumps to be used in conjunction with the controller simply plug into the controller’s input and will be powered up through the unit’s internal power supply.

    Mechanical Dimensions

    The modular design isolates electrical connections in a closed compartment, while the control settings are accessible and can be made through the adjacent compartment.


    Specifications list


    Range -2000 to 2000 mV; -9.9 to 120°C
    Resolution 1 mV; 0.1°C
    Accuracy ±2 mV; ±0.5°C
    Input Impedance 1012 Ohm
    ORP Calibration automatic, at 0 and 350 or 1900 mV
    Digital Output RS485 bi-directional opto-isolated;
    Analog Output 0-1 mA, 0-20 mA and 4-20 mA, 0-5 Vdc, 1-5 Vdc and 0-10 Vdc
    Setpoint Relay contact outputs SPDT 5A-250 Vac, 5A-30 Vdc (resistive load); fuse: 5A, 250V
    Alarm Relay contact outputs SPDT 5A-250 Vac, 5A-30 Vdc (resistive load); fuse: 5A, 250V
    Power Supply 115 Vac ±10% or 230 Vac ±10%; 50/60 Hz; fuse: 400 mA, 250 V
    Power Consumption 15 VA
    Environment 0 to 50° (32 to 122°F); RH max 85% non-condensing
    Protection IP 54
    Dimensions 221 x 181 x 86 mm (8.7 x 7.1 x 3.4")
    Weight 1.4 kg (3.1 lb.)

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