I'm trying to find a part number for an NTC thermistor being used to monitor the temperature of a rechargeable battery. The thermistor I have has no color markings or numbers to indicate any information. I have measured the resistance at multiple temperatures, but I am worried my calculations are not very accurate, as I just used an ice cube and the hot surface of a food warmer. I need to ensure that the resistance – temperature curve matches the one of the thermistor I have, so that the battery charges when it should. Is there any sort of tool made to reliably produce different temperatures for measurement, or a better way I could go about this?
Electronic – How to accurately measure the B value of an NTC thermistor
measurementresistancetemperaturethermistor
Best Answer
If you can wrap the thermistor in a waterproof heatproof enclosure (say, copper pipe soldered shut on one end) then an easy way to produce known temperatures is to use water's phase changes.