Bimetallic thermometer for wireless temperature measurement of professional production

The working principle of the bimetal thermometer is to use two metals with different temperature expansion coefficients. In order to improve the sensitivity of temperature measurement, the metal sheet is usually made into a spiral shape. When the temperature of the multi-layer metal sheet changes, each layer of the metal expands or contracts. Uneven, making the spiral coiled up or loose. Since one end of the coil is fixed and the other end is connected with a pointer that can rotate freely, the pointer can indicate. When the bimetal senses a temperature change, the temperature on the circular dial.