What are common industrial thermometer?

A thermometer is the floorboard of the measuring temperature instrument. Today we speak of one of the small part, that is industrial thermometer. So what are common industrial thermometer? 1. Bimetallic thermometer bimetallic thermometer is a kind of measurement in the field of low temperature test instrument. Can be directly measured in the process of various production - 50℃- Liquid + 500 ℃ range steam and gas medium temperature. Bimetallic thermometer is made of round shape into threaded heat dual metallic piece as temperature sensing element, and put it in a protective sleeve, one end fixed ( Fixed end) And the other end, The free end) Connection on a thin shaft, shaft end is equipped with a pointer. When the temperature changes, temperature sensing element of the free end immediately rotation, thus fine axis pointer to produce angular displacement, on the dial indicates that temperature changes due to the heat element has a linear relation with temperature changes, so the location of the bimetallic thermometer pointer indicated is measured temperature value. 2. Pressure type thermometer thermometer is based on closed system internal work material volume or pressure change with the temperature change and the principle of work. Instrument closed system composed of bulb, capillary and elastic element, wen bags as working medium, when measuring temperature, insert the bulb of the measured medium affected by medium temperature inside the bulb change volume or pressure of working medium, the capillary pass this change to the elastic element ( Such as spring tube) , components elastic deformation, displacement of the free end, with the aid of transmission mechanism, drive the pointer indicates the temperature value on the dial. When the choose and buy, can according to their own needs to choose the appropriate thermometer.