Linearity Calibration - Weidmuller WAVESERIES PT 100/4 Beipackinformation

4.3 Linearity calibration

1. Proceed with basic calibration, see above.
2. Add 1 % of the temperature span to the selected "minimum"
temperature and set this value on a PT 100 simulator (when
using a precision resistance decade, where necessary
observe DIN IEC 751 conversion table from °C to Ω!) and
calibrate the signal conditioner output signal to 0.200 mA
using the null potentiometer.
3. Set the mean temperature "(ϑ
lator.
Determine the difference to the desired value:
"ΔI = shown value on measuring instrument - 10.000 mA"
and calibrate the output signal to (10.000 mA - ΔI) using the
span potentiometer.
4. Set the "maximum" selected temperature ϑ
simulator and calibrate the signal output to 20.000 mA using
the lin potentiometer.
5. Repeat steps 2 to 4 until the required accuracy is achieved.
+ ϑ )/2" on a PT 100 simu-
max min
on a PT 100
max
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