Do you know the expansion type thermometer?

Use thermometer in the lives of many, commonly used have bimetallic thermometer thermometer, electronic thermometer, pressure type thermometer and so on, you know? There is also a thermometer call inflation thermometer. How to define inflation thermometer? Based on the nature of the heated volume expansion objects made of thermometer is called a thermometer. It is divided into liquid expansion, expansion of gases, solid three categories. So what are these problems thermometer? 1, the pressure type thermometer thermometer is the use of temperature measuring the pressure of the material in sealing system to measure the temperature with the temperature change. According to the temperature material filling phase, inflatable, liquid type and steam type three, similar structure. According to its function division are classified as indicating, recording, alarm, type ( With the contact point) Such as type and temperature control type. They are basically the same structure. Pressure type thermometer mainly: the joint of inductive charging temperature, medium temperature bag, the pressure element ( Capillary) And pressure sensitive components ( Spring tube) All metal components, consisting of pressure type thermometer structure is simple, cheap, calibration is clear. Because can remote transmission, and does not need power supply, use does not produce sparks, it has anti explosion. 2, glass tube liquid thermometer glass thermometer is the most widely used a thermometer, its simple structure, convenient use, high precision, low prices. 3, the glass tube expansion thermometer type liquid thermometer is the most widely used in mercury thermometer glass tube. Expansion type liquid thermometer, usually using mercury, toluene, ethanol and petroleum ether, pentane, etc. Liquid glass thermometer according to its structure can be divided into three types: rod type, standard type, standard type. 4, electric contact glass mercury thermometer the electric point mercury scoring adjustable temperature and fixed type two kinds. A given temperature is adjustable, can rotate magnetic steel adjusted; Fixed according to the structure of different part again rod and bar type two kinds, contact ( A given temperature) Normally not extra 3. Above is the expansion of the commonly used thermometer, now whether to expand thermometer have a preliminary understanding of? Hope to help you to understand the temperature time!