EasySet Digital Controllers measure an analog input temperature from a thermocouple or a RTD input and then compare this to a desired setpoint temperature entered by the user. Internal control algorithms calculate the error between the measured input and the desired setpoint and determine when and for how long the output control relay needs to be turned on or off to achieve the desired temperature setting.
The controller has displays that provide visual feedback regarding the measured temperature, desired setpoint value, output relay actuation, and control modes (manual or automatic). The buttons on the front panel of the controller help users configure it and scroll through the various displays and change settings. The controllers also provide relay outputs for alarming capability (PV, output, thermocouple status, controller status, etc.) and a digital input for initiating various remote controller actions (disable keyboard, start timer, alarm acknowledge, etc.).