The advantages and disadvantages of different common liquid thermometer

In daily life, the most common should remain liquid thermometer. And its variety, dazzling. Today let's have a look at the advantages and disadvantages of common liquid thermometer. First the kerosene thermometer, measurement range is about - 30 ℃ ~ 150 ℃, and the index value is bigger, cannot be measured accurately, the famous Galileo thermometer is kerosene thermometer. The second is the mercury thermometer, it has wide measurement range, high accuracy, simple structure and so on. Mercury is below - 38. 87 ℃ during solidification, up from 356. 7 ℃ evaporation, generally used as a thermometer. But mercury toxic, be careful when you use. Alcohol thermometer, measurement range is about - 117 ℃ ~ 78 ℃, compared with mercury thermometer, cheaper, good security, wide measuring range, but the error is large.