PH502421-2 PH CONTROLLER W/SSR 2 SP, ON/OFF, PID, ANALOG OUTPUT
pH502421-2
The pH502 series offer many features to increase the level of control available in a plant. These instruments can be configured to utilise P, PI, and PID Controlling. And with this feature, the pH502 take the place of three instruments that only allowed one configuration each.
pH502421-2 pH Controller w/SSR 2 SP, ON/OFF, PID, analogue output
The pH 502 line includes models that incorporate control through analogue output to drive any compatible device, such as an electro-valve or pump. The solid state relay is available to ensure maximum life of the switching device. Each model has a differential input for a grounding bar to extend electrode life.
A fail safe alarm system protects against power interruption or line failure 1, 2, or 3 point automatic calibration. Manual or automatic temperature compensation completes the features of this controller.
The pH 502 series also contain the following:
- CAL CheckTM
- ATC – Automatic Temperature Compensation
- Up to 3 point calibration
| 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 | RS485 bi-directional opto-isolated; or analogue, galvanically isolated; 0-1mA, 0-20mA and 4-20mA, 0-5 VDC, 1-5 VDC and 0-10 VDC | |
| Set Point Relay | 1 or 2 contact outputs SPDT 5A-250 VAC, 5A-30VDC (resistive load) or 1 or 2 solid state relay (SSR), 1A, 250 VAC (resistive and inductive load), fuse protected (5A, 250V fast fuse) | |
| Alarm Relay | 1 contact outputs SPDT, 5A - 250 Vac, 5A - 30 Vdc (resistive load), fuse protected (5A, 250V fuse) | |
| Power Supply | 115 Vac ±10%, 230 Vac ±10%; 50/60 Hz | |
| Power Consumption | 15VA | |
| Over Current Protection | 400mA 250V fast fuse | |
| 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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