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Glass probe thermistors are best suited in applications that require high stability and ruggedness. between temperature and measured voltage with a load resistor Consequently, we can use them as temperature sensors. factor here. EAS 199B Thermistor Calibration: T F R Spring 2010 Gerald To get more information on thermistor calibration or thermistor data loggers, contact a CAS Data Logger Applications Specialist at (800) 956-4437 or request more information. using for the actual post-calibration measurements. They are highly appropriate for many applications with small temperature ranges and compatible with a two-wire connection system. i then added that 2.2 degrees in thermistor temperature calculation. Thermistor Calibration The size of thermistors also makes them practical for use in small electronics. Calibrating a thermistor (or mostly any sensor for that matter) is a two step process: measure the calibration data devise a calibration law that fits that data The first step is the hardest, and unfortunately the one I have the least experience with. Both of these formulas produce curves that are virtually This characteristic allows them to provide higher accuracy than thermocouples or RTDs. Indeed, the cost of not calibrating temperature equipment can be extremeinferior products, unscheduled equipment downtime, regulatory penalties and even potentially tragic accidents with tremendous legal liability. Four-Wire Configuration this is the most complex of configurations. Although NTC thermistors are often the right choice, they should not be used for all designs. This is referred to as a non-linear relationship between temperature and resistance. equation. The coefficients Although these devices are affordable, powerful, and reliable, they suffer from certain limitations, which means they are not ideal for all applications. Thermistors A 10k NTC thermistor has a B value of 3455 between the temperature range of 25 o C and 100 o C. Calculate of Thermistor; A Fundamental Comparison Between Them Thermistors have temperature responses that are fairly quick, while the DHT22 takes a few readings. NTC thermistors work within a narrow range of temperatures. For my thermistor, I found factory tables that allowed me to fit the data using the equation above [example datasheet with table].