... .03PH,+-3mV 3.Power supply:DC24V Industrial pH / ORP transmitter PHG series of two-wire industrial pH / ORP transmitterPHG ... , form the integration measure, display and transmission instruments. The PHG-200 transmitter is for online continuous detection of ... controller, data logger or touch screen for online moniter and control. Dual high-impedance differential amplifier, strong anti interference, ...