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The glass thermometers general types of liquid, what advantages and disadvantage

Have read 7872013-9-25 21:48:33

 

Kerosene thermometer, it is the working substance is kerosene, and its boiling point is generally higher than 150 ° C, the freezing point below -30 ° C. Kerosene thermometer that has a range of about -30 ℃ ~ 150 ℃.
2, alcohol thermometer, due to the boiling point of the alcohol is 78 ℃, the freezing point is -117 ° C, alcohol thermometer than kerosene thermometer measured lower temperature, but higher than 78 ° C the temperature, it can not be determined.
Mercury thermometer, is one of the expansion thermometer mercury freezing point: -38.87 ° C, boiling point: 356.7 ℃, used to measure the temperature within the range of 0 - 150 ℃ or 500 ℃. But most used to do the thermometer, more precise, the range of 35 - 42 ° C.