Thermistor - B or β Parameter Equation

B or β Parameter Equation

NTC thermistors can also be characterised with the B (or β) parameter equation, which is essentially the Steinhart Hart equation with, and ,

Where the temperatures are in kelvins and R0 is the resistance at temperature T0 (25 °C = 298.15 K). Solving for R yields:

or, alternatively,

where .

This can be solved for the temperature:

The B-parameter equation can also be written as . This can be used to convert the function of resistance vs. temperature of a thermistor into a linear function of vs. . The average slope of this function will then yield an estimate of the value of the B parameter.

Read more about this topic:  Thermistor

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