IN228286: An improved pH transmitter device for on-line high current application

A pH transmitter for on-line high current applications, that has a current output of 4 to 20mA, comprising of a pH sensor, electronic hardware circuits to process the sensor output, to compensate for pH variation with temperature, to calibrate the transmitter using buffers, and to provide current output corresponding to 0 to 14 pH, has been developed that has application to monitor and transport the pH signal over a large distance in chemical and electrochemical processes that involve high currents in industrial environment.