When water flow from the system, different types of sensors like pH, Conductivity, Corrater, ORP and Fluorometer comes into action. The fluorometer detects the chemical level in the cooling water online and transmits the signal to controller. The controller convert those signals into statics and this information appears on the screen. In case the value obtained by the sensors doesn’t match with the set point entered in the system, the controller starts the relay which is assigned for that parameter and the chemical dosing pump operates accordingly. Acid feed, blow down and halogen feed can also be controlled by the controller to the desired level of these parameters.

Thermax has developed three online detection, monitoring and controlling system: