Weidmuller WAVESERIES PT 100/4 Beipackinformation Seite 25

4.2 Basic calibration with a signal output from 0 ... 20 mA
1. Select the temperature range on the printed circuit board us-
ing the DIP switch, see table on the module or pages 33 and
34.
The DIP switches 1, 2 and 3 set the minimum input tempera-
ture ϑ
.
min
The span (difference between minimum and maximum input
temperature) is set using the DIP switches 4, 5 and 6.
2. Professionally install module.
3. 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. (The potentiometers are located
behind the hinged cover).
4. Set the "maximum" selected temperature on a PT 100 simu-
lator (or precision resistance decade) and calibrate the signal
output to 20.000 mA using the Span potentiometer.
5. Repeat steps 3 and 4 (approx. 2-3 times), until the required
accuracy is achieved.
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