The electronic temperature control switch is through the hot spot coupling, platinum resistance and other temperature sensors, will receive the temperature signal into an electrical signal, through the microcontroller, PLC these circuits relay control heating or cooling equipment switch. There is also a pressure type of temperature control switch, is similar to the mercury thermometer type, to reach a certain temperature will turn on the contacts to achieve the switch control.
Precautions for the use of temperature control switchesClosed temperature control switches
In the use of sealed temperature control switches, the metal cover should be tightly attached to the installation surface of the equipment to be controlled, in order to achieve a good temperature effect, it is best to apply thermal conductive silicone grease on the surface of the temperature sensing, or other heat-conductive properties of the medium. When installing the temperature control switch, pay attention to the weight of the hand, if the top of the temperature control switch cover is collapsed, or lead to its loosening, deformation, will have an impact on its performance and precision.
In the process of use, the temperature control switch can not be deep inside the liquid, can not make the shell cracks, and even more can not change the shape of the switch outside the terminal, to avoid affecting the electrical reliability of the switch. In the installation of the switch, do a good job of insulation protection measures, to prevent the occurrence of electrical accidents due to leakage.
Open temperature control switch
In the installation and use of open temperature control switch, do not touch the shrapnel as well as the temperature-sensitive part, otherwise it will lead to the temperature of the protector is out of calibration, poor contact and abnormal action.
The amount of wind outside and the dust accumulated on the surface will have an effect on the sensitivity of the temperature control switch, so it is best to install it with the contacts toward the leeward side. Temperature control switches should work in an environment with a relative humidity of less than 90%, and be stored in an environment with a temperature of 40℃ and ventilated, dry and free of corrosive gases.
Temperature control switch installation points
Today, many household appliances will be turned on at the same time, and the use of a long time, especially the use of high-power household appliances, is very easy to cause the electrical line overload, causing wire short-circuit and other faults, causing a fire. The temperature control switch is made of an alloy containing an insulating shell, which will automatically disconnect the circuit when the ambient temperature exceeds the set temperature to effectively prevent home appliances from catching fire.
The correct installation of temperature-controlled switches can effectively prevent household appliances and industrial electrical equipment from catching fire: temperature-controlled switches are integrated into the electrical circuit of the appliance. The two leads in the device are connected by correct installation. Under normal conditions, when the ambient temperature reaches the set temperature, the bimetal inside will trip, disconnecting the circuit and thus cutting off the current, preventing the temperature from rising further