Bimetallic thermometers combine two metals with different linear expansion coefficients, one end is fixed, and when the temperature changes, the thermal expansion of the two metals is different, driving the pointer to deflect to indicate the temperature, which is the bimetallic sheet thermometer, as shown in the figure on the above page. The temperature measurement range is -80~500C, which is suitable for temperature measurement when the accuracy requirement is not high in industry. As a kind of temperature sensing element, bimetal can also be used for automatic temperature control.
WSS series bimetal thermometer is a kind of field detection instrument for measuring medium and low temperature. Bimetallic thermometers can directly measure the temperature of liquid, steam and gas medium in the range of -80 ° C to +500 ° C in various production processes.
Principle structure: Bimetal thermometer is wound into a threaded shape of the hot bimetal sheet as a temperature sensing device, and it is installed in the protective sleeve tube, one end is fixed, called the fixed end, the other end is connected to a thin shaft, called the free end. The free end spool is provided with a pointer. When the temperature changes, the free end of the temperature sensing device will rotate accordingly, driving the pointer on the thin axis to produce an Angle change, indicating the corresponding temperature on the scale.
