Temperature calibration temperature scale established standard equipment types

Temperature measuring instruments and work with standard temperature test, generally a standard method of comparing standard thermometer was seized by the thermometer, that comparison done. Due to the large temperature range specified temperature scale, interpolation different temperature zones of different instruments, but the actual temperature measuring instruments for its application temperature range is different, so the different temperature zones and measuring instruments type its measurement methods are different. Various industries and regions thermometer traceable to standard equipment in various industries and regions, the thermometer calibration used in the construction industry can be traced back to the local metering station and then traced to the Chinese China Institute of Metrology temperature reference, can also be traced to China Building Science School building energy and environment Test Center, and then finally traced to the China Science and Chinese Academy of reference gasoline meter measurement. Temperature and the length, mass, time, current, luminous intensity, amount of substance (mole) and known seven basic physical quantities. Thermodynamic temperature (symbol T) is the basic physical hand, its unit is Kelvin (Kelvin symbol K), defined as the thermodynamic temperature of the triple point of water, 1 / 273.16. As the previous definition of the temperature scale used and 273.15K (freezing) to represent the difference between the temperature, so that each method remains. By definition, equal to the size of degrees Kelvin, the temperature difference can also use Celsius or Kelvin to represent.