PH500222-2 PH DIGITAL CONTROLLER, DUAL SET POINT, PROPORTIONAL CONTROL, RS232 OUTPUT
pH500222-2
pH 500 series of controllers are simple-tooperate, microprocessor-based process meters packed with features. For more flexibility and better resolution for chart recorders, any two points between 0 and 14 pH can be chosen to correspond to the analog output spans.
pH 500 series of controllers are simple to operate, microprocessor-based process meters packed with features. For more flexibility and better resolution for chart recorders, any two points between 0 and 14 pH can be chosen to correspond to the analogue output spans. Several pH 500 models are equipped with a bi-directional RS232 port. Push button password programming prevents tampering. The microprocessor memory is fully programmable and has a 3 month backup power supply.
The Fail Safe Alarm system protects the pH 500 against the pitfalls of process control, like power interruption or line failure. With pH 500 quick 1, 2 or 3 point calibration at pH 4.01, 7.01 and 10.01 comes standard. The temperature can be manually or automatically compensated for. Models with RS232 output allow computer compatibility, necessity for process control instrumentation. You can also choose from ON/OFF or Proportional Dosage to save on chemicals.
- Single or dual setpoint
- Fully programmable
- Microprocessor memory
- mA & VDC recorder output or RS232
- Differential input for ground loop protection
- Automatic 3 point calibration
- Last calibration data
- Automatic temperature compensation
- Simple wiring with removable terminal module
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| Range | 0.00 to 14.00 pH; -9.9 to 120°C | |
| Resolution | 0.01 pH; 0.1°C | |
| Accuracy | ±0.02 pH; ±0.5°C | |
| Input Impedance | 1012 Ohm | |
| pH Calibration | automatic, 1,2 or 3 point, at pH 4.01, 7.01, 10.01 | |
| Temperature Compensation | Automatic (with Pt100 probe) or manual from -9.9 to 120°C | |
| Digital Output | RS232 bi-directional opto-isolated | |
| Analog Output | galvanically isolated: 0-1 mA, 0-20 mA and 4-20 mA, 0-5 Vdc, 1-5 Vdc and 0-10 Vdc |
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| Setpoint Relay | 1 or 2 contact outputs SPDT 5A - 250 Vac, 5A - 30 Vdc (resistive load) |
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| Power Supply | 115 Vac ±10%, 230 Vac ±10%; 50/60 Hz | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non condensing | |
| Dimensions | panel cutout: 140 x 140 mm, instrument: 144 x 144 x 170 mm | |
| Weight | 1.6 kg (3.5 lb.) |
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