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.
Details
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.
| 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 |
| Alarm Relay Set Point |
electromechanical relay SPDT contact output, 5A – 250 VAC, 5A – 30 VDC (resistive load) fuse protected: 5A, 250V, 250V fast fuse |
| Alarm Relay Range |
0.00 to 14.00 pH |
| Dosing Control |
on/off |
| Over Dosing Control |
maximum relay ON time is adjustable from 1 to 60 minutes |
| Consent Relay |
electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A – 30 VDC (resistive load) (HI211YZ and HI212YZ), fuse protected: 5A, 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 |
| Voltage Output |
±5V power supply output for amplieifed electrodes |
| Dosing Terminals |
two electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A – 30 VDC (resistive load), fuse protected: 5A, 250V fast fuse |
| 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 |
230 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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