High precision glass thermometer used in where?

Common thermometer in our life, nothing is better than the glass thermometer, the thermometer is belong to us today to say a kind of glass thermometer. Glass thermometer thermometer is widely used in our life, because of low cost, high accuracy and easy to use, simple structure, so by the users of all ages. Categorizing glass thermometer classification according to the use, can be divided into industrial thermometer, standard thermometer and laboratory using three kinds of thermometer. Standard glass thermometer is a complete supply and can be used as a test of other thermometer, accuracy can reach 0. 05 ~ 0. 1 c; In order to prevent the thermometer break in use process, usually by metal protective casing outside a glass tube, only show part of the scale, for operator readings; Glass thermometer is the use of the principle of heat bilges cold shrink to realize the temperature measurement. Due to the expansion coefficient of medium and the boiling point and freezing point of difference, so we common glass thermometer mainly include: water thermometer kerosene thermometer, mercury thermometer, the red pen. He has the advantage of simple structure, easy to use, relatively high measurement accuracy, low prices. Defect is measured on the floor and the precision being limited by the quality and temperature measuring dielectric properties of glass, and cannot be far eastone, fragile. Laboratory, then, in the form of a glass tube thermometer and a standard, accuracy is higher also, of course the glass tube inner diameter of the thermometer of the thinner, heat bilges cold shrink, the more obvious, so also the more accurate. Finally glass thermometer is widely used in chemical, pharmaceutical, brewing, printing and dyeing and machinery manufacturing, at the same time can also be applied to all kinds of the laboratories of scientific research, education, health authorities of temperature measurement, so it is one of the thermometer is widely applied.