Hi,
How do you calibrate a thermistor to read accurate to 0.1C?
I am using the EEPROM method and have calulated the Stein-Hart calculations etc, but the problem is a reference....
Without having a precise thermometer, how can you get precise reference points for the equation? If I had a precise thermometer, I would use that instead of making one!
I used and ice/water mixture to get 0.0C (it should be in equilibrium - although there was a little change in the values when it was stirred around, so it is probably not 100% accurate either)
I live at sea level so used boiling water as 100.0C
What can I use as the third point? I cant find anything with a reliable and safe boiling point.
I would like to measure accurately from about 0 to 100C
How do you calibrate a thermistor to read accurate to 0.1C?
I am using the EEPROM method and have calulated the Stein-Hart calculations etc, but the problem is a reference....
Without having a precise thermometer, how can you get precise reference points for the equation? If I had a precise thermometer, I would use that instead of making one!
I used and ice/water mixture to get 0.0C (it should be in equilibrium - although there was a little change in the values when it was stirred around, so it is probably not 100% accurate either)
I live at sea level so used boiling water as 100.0C
What can I use as the third point? I cant find anything with a reliable and safe boiling point.
I would like to measure accurately from about 0 to 100C