NTC Thermistors (Negative Temperature Coefficient) are resistive
sensors for which the ohmic value decreases when temperature raises.
Such variation follows an exponential curve known under the name
It is as follows :
R = Resistance in Ohm
e = 2,718281828
T = Temperature in °K.
A, B, C variable parameters for each kind of RT Curve.
Two kinds of NTC thermistors are present on the market:
Thermistors from other countries in the world, aren't so
American thermistors are very small, from an O.D. of 0.004"
The main used NTC for temperatures probes have an O.D. of 0.077"