Thermistors are used as a resistor that is affected by temperature/resistance thermometer. The term is derived from combining two words (thermal and resistor). The devices are constructed from metallic oxides that are then pressed onto a disk, bead, or cylindrical shape. When necessary, thermistors are fully encapsulated with materials like glass or epoxy.
Precise monitoring and responses to temperature change are the jobs of a thermistor. One of the main challenges associated with using thermistors is calculating temperature from the measured resistance value. To overcome this issue, the Steinhart-Hart equation is employed to convert a sensor's resistance to temperature. The equation is meant to be a simple method for modeling the temperature of thermistors.
The equation dates to 1968, with Stanley R. Hart and John S. Steinhart, but it is still used today. The equation is thought to provide empirical evidence of the thermistor and probe assemblies' resistance temperature relationship. It is important to measure resistance and temperature across the expected operating range during the calculation of a new thermistor.
Compared to other calculating temperature and resistance methods, the Steinhart-Hart equation is often seen as the most precise method of gauging temperature ranges. The equation is used to help thermistors measure temperature for many applications.
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