Weidmuller PT 100/4 signal conditioners for current output - Manual (Page 9)

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4.4 Basic calibration with an output signal from 4 ... 20 mA
1.
Set the r equired temperature range on the printed circuit
board using the DIP switch, see the table on the module or
sides 41 and 42.
The DIP switches 1, 2 and 3 set the minimum input tempera-
ture
ϑ
min
.
The span (dif ference between minimum and maximum input
temperature) is set using the DIP switches 4, 5 and 6.
2. Professionally install module.
3. Set the " minimum" selected temperatur e on a PT 100 simula-
tor (when using a pr ecision r esistance decade, wher e neces-
sary observe DIN IEC 751 conversion table from °C to
Ω
!)
and calibrate the signal conditioner output signal to 4.000 mA
using the null potentiometer . (The potentiometers ar e located
behind the hinged cover).
4. Set the " maximum" selected temperature on a PT 100 simu-
lator (or pr ecision r esistance decade) and calibrate the signal
output to 20.000 mA using the span potentiometer .
5. Repeat steps 3 and 4 (appr ox. 2-3 times), until the required
accuracy is achieved.