Weidmuller PT 100/4 signal conditioners for voltage output - Manual (Page 5)

19
4.2 Basic calibration with a signal output from 0 ... 10 V
1.
Select the temperature range on the printed circuit board
using the DIP switch, see table on the module or pages 23
and 24.
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 ob-
serve DIN IEC 751 conversion table from °C to
Ω
!) and cali-
brate the signal conditioner output signal to 0.100 V 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 10.000 V using the Span potentiometer.
5. Repeat steps 3 and 4 (approx. 2-3 times), until the required
accuracy is achieved.