In what sensing element of application system enable the controller to reach the most accurate and reliable performance?The controller can work accurately in the system of quick temperature transmission by quickly calculating the output in response to the input from the application system. For example, the application system with liquid as transmission medium is easier to be controlled than the one with air as transmission medium, because liquid temperature is comparatively more stable while air temperature tends to be unsteady due to the slow transmission speed and the external air turbulence.