Temperature controller is what? The types of thermostat?

Temperature controller, it is using thermal liquid heat bilges cold shrink and the principle of incompressible and realize automatic adjustment. When the control temperature thermal fluid expansion thrust will turn down heat medium, in order to reduce the output temperature; When the control temperature lower thermal liquid contraction, under the action of reset device will open big heat medium, in order to improve the output temperature, keeping to controlled temperature and in setting temperature range. To the thermostat manufacture principle, the thermostat is divided into: a. Snap action thermostat: the thermostat is bimetallic thermostat products, mainly as a variety of electric heating products overheating protection, usually used with thermal fuse series, snap action thermostat as the level of protection. Relay, while the thermal fuse Lou loss or failure cause electric heating element overtemperature, since as a secondary protection, effectively prevent burn out electric heating element and the fire caused by the accident. Second, liquid up thermostat: is when the temperature of the controlled object changes make thermostat heat division material ( General is liquid) The physical phenomenon of a corresponding heat bilges cold shrink, Volume change) , with heat connected with bellows expansion or contraction. To the lever principle, lead to switch on and off, to achieve a constant temperature fluid expansion thermostat with accurate temperature control, stable and reliable, open stop temperature difference is small, big range to adjust control temperature control, such as large overload current performance characteristics. Fluid thermostat is mainly used in home appliance industry, electric equipment, refrigeration industry such as temperature control occasion. Three, thermostat, pressure change thermostat through sealed inside temperature of the working medium temperature filling package and capillary, transform was charged with the change of temperature stress for the space or the change of volume, meet the temperature set point, through the elastic element and the occurrence mechanism, automatic close contact, in order to achieve the purpose of the automatic control of temperature. It consists of temperature, temperature setting main body, the implementation of open and close micro switch or automatic door of three parts. Pressure thermostat is applicable to refrigeration equipment ( Such as a refrigerator freezer, etc. ) And the heating device, etc. Four, electronic temperature controller, electronic temperature controller ( Resistive) Is a method to measure the thermal resistance, generally USES the white gold, copper, tungsten and thermal resistor as temperature resistance, the resistance have their optimal point. Most of general family expenses air conditioning use thermistor type.