pH Controller with Automatic Temperature Compensation

This microprocessor-based pH controller is designed for a wide variety of environmental monitoring applications. The unit features automatic or manual temperature compensation of pH, two 5 amp mechanical relays and a choice of a 4 to 20 mA, 0 to 20 mA or 0 to 10 V control or re-transmission output. For ease of operation all calibration and parameter setpoints are selected through the front keypad. The PHCN-37 can be used with a variety of pH electrodes.

SPECIFICATIONS:

pH Range: 0 to 14.00 pH; 0 to 100°C.
Resolution: 0.01 pH, 0.1°C
Calibration pH: 2 or 3 point
Accuracy: ±0.01 pH; ±0.5 C
Display: 4-digit, LED, 13.7 mm
Relays: dual SPDT (form C) 5 A at 240 Vac, mechanical relay. Programmable deadband hysteresis around setpoints.
Output: 4 to 20 mA, 0 to 20 mA or 0 to 10 V (Scalable) menu selectable.
Input Impedance: >10¹² ohms
Temperature Compensation: Manual or Automatic, 0 to 100°C using Pt 100 or Pt1000 ohm RTD
Connectors: pH: BNC; Temperature: terminal strip
Power: 115 Vac, 230 Vac, 50/60 Hz; 10-32 Vdc
Panel Cutout: 1 /8 DIN, 45 H x 92 mm W
Dimensions: 48 H x 96 W x 177 mm D
Weight: 580 g