Wall Mounted pH Digital Controller with Dual Setpoint - HI21211

SKU: HI21211-1

The HI21211 controller is a dual set point, microprocessor-based pH process controller specifically designed to meet your process control requirements. A host of self testing features and user-friendly functions make HI21211 a great value.
  • On/Off Control
  • Fail Safe Alarm System.
  • Automatic Temperature Compensation using pt100 temperature probe.

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

  • HI21211 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 when using pH electrodes with a matching pin. Very effective at extending the life of the electrode.

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.
More Information
SKU HI21211-1
Product Name Wall Mounted pH Digital Controller with Dual Setpoint - HI21211
Quote Required No
pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH
pH Accuracy ±0.02 pH
pH Calibration automatic, one, two or three point, at pH 4.01, 7.01, 10.01
pH Temperature Compensation automatic (with Pt100 probe) or manual from -9.9 to 120°C
pH Dosing Relay electromechanical relay SPDT contact outputs, 5A-250 Vac, 5A - 30 Vdc (resistive load)
pH Dosing Set Point 0.00 to 14.00 pH
pH Hysteresis Band 0.00 to 14.00 pH
Temperature Range -9.9 to 120.0 °C
Temperature Resolution 0.1 °C
Temperature Accuracy ±0.5 °C
Dosing Control on/off
Dosing Terminals two electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A - 30 VDC (resistive load), fuse protected
Consent Relay electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A - 30 VDC (resistive load) (HI211YZ and HI212YZ), fuse protected
Alarm Relay Set Point electromechanical relay SPDT contact output, 5A - 250 VAC, 5A - 30 VDC (resistive load) fuse protected
Alarm Relay Range 0.00 to 14.00 pH
Over Dosing Control maximum relay ON time is adjustable from 1 to 60 minutes
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
Voltage Output ±5V power supply output for amplieifed electrodes
Power Consumption 15 VA
Over Current Protection 400 mA, 250V, fast fuse
GLP date, time, offset, slope and calibration buffers for the last calibration
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 Information Each HI21 model is supplied with instructions
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