Process Instrumentation: pH 500

pH Controllers with Matching Pin
  • Simple to operate
  • High resolution
  • Push-button password programming

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 analog 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, a necessity for process control instrumentation. You can also choose from ON/OFF or Proportional Dosage to save on chemicals.

Each pH 500 model is supplied complete with mounting brackets and instructions. Electrodes and sensors are optional, please ask your nearest dealer for details!


Available Accessories:
HI 7004L | pH 4.01 buffer sol, 500 mL
HI 7007L | pH 7.01 buffer sol, 500 mL
HI 7010 | pH 10.01 buffer sol, 500 mL
  0.00 to 14.00 pH / -600.0 to 600.0 mV / -9.9 to 120C
  0.01 pH / 0.2 mV / 0.1C
Accuracy (@20C/68F)
  0.02 pH / 0.5 mV / 0.5C
Typical EMC Deviation
  0.02 pH / 10mV /0.5°C
  High impedance 1012 Ohm
  1, 2 or 3 point at pH 4.01, 7.01 and 10.01
Temp. Compensation
  Automatic (with Pt100) or manual from -9.9 to 120C
  4-digit dual level LCD with graphic symbols and messages
  Digital: RS232 bi-directional opto-isolated; or Analog: galvanically isolated
Setpoint Relay
  1 or 2: SPST NO contact outputs 5A-250VAC, 5A-30VDC (resistive load)
Battery Type / Life
  pH 500/D:230V 10%VAC; 50 Hz; pH 500/U: 115V 10%VAC; 60 Hz
  DIN 5.7 x 5.7 x 6.7" (144 x 144 x 170 mm)
Panel Cutout
  5.5 x 5.5" (140 x 140 mm)
  3.5 lb. (1.6 Kg)

32 to 122F (0 to 50°C); max RH 85% non-condensing