The Tiger 320 Series controller using a pH sensor input module operates directly with standard pH sensor outputs.
For quick and easy sensor calibration, the Tiger 320 Series controller has On-demand single and two-point calibration functions from the front panel program button.
The relay outputs controlling the pH reagent are programmed in the repeat mode (programmable OFF/ON-time). After a selected time interval, the solution pH is checked (OFF-time), and if reagent is required, a programmed (ON-time) amount of the reagent chemical (acid or caustic) is added. The cycle continues until the reaction tank is at the correct pH level.