How do i calculate the percentage error of a themometer?

lowest reading is 20C and highest 60C if that's any help!

Thanks!How do i calculate the percentage error of a themometer?
The only way that you can check the % error of a thermometer is to read what the thermometer gives as the temperature of a solution, the temperature of which is accurately known.

A typical example would be to check the boiling point of distilled water. This must be 100.0掳C at an atmospheric pressure of 101.3kPa. If your thermometer gives a temperature of 99.3掳C, then obviously the percentage error at 100.0掳C is 0.7%



For your thermometer which reads a much lower range you obviously need another liquid. I am sure that you can obtain standard certified liquids with a guaranteed known boiling point in the range that you want. These should be obtainable from your laboratory equipment supplier, but probably at some ridiculous price. Once again say you get a liquid with a guaranteed BP of 45.0掳C. Your thermometer reads 44.7掳C , a difference of 0.3掳 in 45掳, or 0.3/45.0*100 = 0.667% error



While typing this up, the thought came to mind that if the measurement of temperature is critical, you can most probably buy pretested and certified thermometers with an accuracy scale provided. I know that you can get this for volumetric glassware if accuracy is critical. Ask your laboratory supplier.How do i calculate the percentage error of a themometer?
its your accuracy 0.1 divided by your range multiplied by 100

kuryakyn

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