Hanna Instruments Process Division has released the pH 500 series of 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 three-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. One, two or three-point calibration at pH 4.01, 7.01 and 10.01 comes as standard. The temperature can be manually or automatically compensated for. Models with RS232 output allow computer compatibility, a necessity for process control instrumentation. Users can also choose from on/off or proportional dosage to save on chemicals.
Each pH 500 model is supplied with mounting brackets and instructions.