Bimetallic thermometer thermometer factory group and the comparison of several other thermometer

As temperature measurement, the thermometer plays a very important role in our daily life. Friends know bimetallic thermometer thermometer factory and other commonly used the comparison of the thermometer? Thermometer is the general term of the thermometer, which can accurately and measuring temperature. Use of solid, liquid, gas temperature on the thermal expansion and contraction phenomenon to carry on the design basis. Kerosene thermometer, alcohol thermometer, mercury thermometer, gas thermometer, resistance thermometer, thermocouple thermometer, radiation thermometer and light thermometer, bimetallic thermometer, etc. Bimetallic thermometer: refers to the thermometer used to measure the temperature higher than 500 ℃, thermometer, thermometers, color temperature and radiation thermometer thermometer. Principle and structure of bimetallic thermometer is more complex, there is no longer here. Measuring range above 500 ℃ ~ 3000 ℃, not suitable for low temperature measurement. Gas thermometer: multi-purpose hydrogen or helium as temperature measuring material, because the hydrogen and helium liquefaction temperature is very low, close to zero, so the temperature range is very wide. The thermometer is high precision, is used for precision measurement. 'Resistance thermometer, resistance thermometer metal and semiconductor resistance thermometer, are based on resistance change with temperature. Metal thermometer mainly adopts platinum, gold, copper, nickel and other pure metal and rhodium iron, phosphor bronze alloy; Semiconductor thermometer mainly carbon, germanium, etc. Resistance thermometer is easy to use and reliable, and has been widely used. Its measuring range is - Around 260 ℃ ~ 600 ℃. Above is bimetallic thermometer and several other thermometer contrast related knowledge introduction, friends and many other thermometer.