Temperature controllers, like the name suggests, are devices used to control temperatures. They are used in industries, commercial facilities, and HVAC
systems. They work by measuring temperatures using thermocouples and comparing it to preset levels. Then, they calculate the time that a heater needs to stay on in order to keep the temperature of a room, boiler, or your facility constant.When the controllers measure the current temperatures and check how they compare with the preferred level, the difference is referred to as error (deviation). This deviation is used by the device to control other components such as fans
, and control valves.Temperature controllers can be classified into several groups that include the on/off models. These are the simplest versions that simply switch on or off the heaters when specific temperature levels are reached. Other types of temperature controllers include proportion temperature controllers, PID temperature controllers, and standard temperature controllers.