Hanna Instruments Digital pH Controller with Matching Pin

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