Say a lot of thermometer, exactly what is a thermometer?

Especially in the industrial, machinery, in areas such as the thermometer is often mentioned measurement tools, said a lot of thermometer, what is a thermometer? To specific introduce today, actually is a tool for people invented measuring temperature thermometer, is the same with the feet and said, the unit definition is defined by people according to the natural phenomenon scale. Invented for the unified standards of measurement. What's the temperature? Thermometer is the floorboard of the temperature measuring instrument, can accurate judgment and measuring temperature. Use of solid, liquid and gas is influenced by temperature and heat bilges cold shrink phenomenon such as the basis for design. With kerosene thermometer, alcohol thermometer, mercury thermometer, gas thermometer, resistance thermometer, thermocouple thermometer 1, radiation thermometer and light thermometer, bimetallic thermometer thermometer for us to choose, but must pay attention to the correct method of use, understand the characteristic of the thermometer, facilitate better use. Working principle of the editing according to different purpose, has been designed and manufactured a variety of thermometer. The basis of its design are: the use of solid, liquid and gas is influenced by temperature and heat bilges cold shrink phenomenon; Under the condition of constant volume, gas ( Or steam) The pressure due to different temperature change; The role of thermoelectric effect; The change of resistance with temperature changes; The influence of thermal radiation, etc. Generally speaking, any physical properties of all matter, as long as it along with the change of temperature and drab, significant changes in, and made available to signal temperature thermometer. Thermometer is our daily life and production is a kind of instrument, he help us under the unified standard to measure the temperature, to our production and life brought great convenience, so choose a good thermometer is very important to choose a good thermometer must buy normal manufacturer production, not covet is cheap random selection.