Weidmüller PT 100/4 Notice D'utilisation page 32

Example
Chosen measuring range: -50 ... +150 °C
Set minimum temperature (-50 °C)
on the PT 100 simulator and calibrate the signal conditioner
output signal to 4.000 mA using the null potentiometer.
Mean temperature
Set the 50 °C value on the PT 100 simulator
Then determine ΔI:
Then calibrate the output signal to (12.000 mA - ΔI) using the
span potentiometer i.e. here an example.
Then set the maximum temperature on the PT 100 simulator and
calibrate the output signal to 20.000 mA using the lin potentiome-
ter.
32
= (ϑ
max
= (150 °C + (-50 °C))/2
= 50 °C
ΔI = measured value from measuring
instrument - 12.000 mA
→ ΔI = 11.940 mA - 12.000 mA
= -0.060 mA
"12.000 mA - (-0.060 mA) = 12.060 mA"
+ ϑ )/2
min