Operator's manual

20
Gas sampling and gas conditioning technology 3-1.10-ME
2. Resistance method
In this case the sensor must be disconnected from pins X5/5+6 at the ECP20 automatic control board
and removed from the cooling block. When measuring the resistance of the PT100 element, this must
be proportional to the ambient temperature. The resistance-temperature characteristics are shown in
the figure below.
°C
Ohm
95
97
99
101
103
105
107
109
111
113
115
117
-10 0 10 20 30 40
Figure 7 Resistance-temperature characteristics of the PT100 temperature sensor