A temperature controller, also known as a temperature display regulator, is an instrument that measures and controls the temperature of an object. It has a wide range of applications in daily industrial and agricultural production.

The process of operating the controlled object to the desired temperature is called temperature control. Temperature control is a process that requires the cooperation of external devices and mechanisms, as well as the support of thermal theory, to achieve the ultimate goal.

In the process of controlling the controlled object, the result of temperature changes is called control, and good control is how to approach the ideal response of the control result.

The ideal temperature control is to faithfully track the controlled temperature when the target temperature changes (changing the set value, starting when the power is turned on). In reality, due to time delays in the control object, temperature, temperature detection part, operation part, etc., the control part takes corrective actions on the delayed reaction temperature. Therefore, the phenomenon of "upward rush" and "downward rush" occurs. If the gain (responsiveness) of the action is reduced in order to obtain good control results, the time to reach the target temperature becomes longer, or the oscillation that occurs cannot be reduced, or even the oscillation becomes larger. Choose that as a good control result based on the different purposes and purposes of the controlled object.

Characteristics of controlled objects

To use a temperature controller for appropriate control, it is necessary to fully understand the thermal characteristics of the controlled object before selecting a temperature controller and temperature measuring device.