ANALOG CONTROLLERS & INDICATORS
Hanna panel mounted pH, ORP and conductivity controllers, are designed to meet your demanding process control requirements. Our controllers come equipped with a relay operating at a maximum of 2 A (250V). Where a direct electrode input is not suitable, the coontroller is available with a 4-20 mA input from a transmitter. This feature greatly improves the safety of your instrumentation and plant. Accurate measurements are displayed on a large LCD, enabling the operator to check the controller readings easily. These units have sophisticated, built-in, self-diagnostic functions that allow the operator to check whether a malfunction has originated in the instrument itself, or in the outside connection (electrode, transmitter or cables). This saves valuable time and money, particularly in the monitoring of critical processes. In the event of a mulfunction, the operator can determine the origin and rectify the situation before any costly errors occur. This Self-Diagnostic Error Prevention System makes these process instruments superior to conventional controllers.