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Advanced ORP Controllers
  • Simple to operate
  • Computer compatibility
  • Fully programmable with back-up power supply

The HI 22 controllers have been engineered with the same outstanding 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 pitfalls of process control. User-selectable timing capability safeguards against overdosing and saves money while protecting the environment. These instruments have 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 analog output spans. RS485 capability makes one model (HI 22122-1) PC compatible. Wiring the controllers is simple with extractable terminal modules. A host of self-testing features and user-friendly functions make HI 22 a great value.

Each HI 22 model is supplied complete with instructions.




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