Foil element are used for high accuracy surface and air temperature measurements. Due to the sensors low heat capacity (big surface, low mass) the measured objects temperature is little affected and the response time is fast. Glimmer elements give also fast response time. The element is insulated with tape.
The resistance of a Pt100 sensor at -200 - 0°C is calculated according to this formula:
Rt=R0(1+3,9083x10-3t - 5,775x10-7t2 - 4,183x10-12(t-100)t3)
The resistance of a Pt100 sensor at 0 - 850°C is calculated according to this formula:
Rt=R0(1+3,9083x10-3t - 5,775x10-7t2)
R0, resistance at 0°C. (100 Ohm) Rt, resistance (Ohm) at the temperature t. (°C)
According to DIN IEC-751 class A:
0,15 + 0,002|t|* °C
*|t| = the absolute value of the temperature in degree Celsius.
Pt 100, 22x9x0,45mm