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Weidmuller PT 100/3 sig conditioners for current output User Manual

Page 7

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21

4.3 Calibration with an signal output from 4 ... 20 mA
1.

Set the required temperature range on the printed circuit
board using the DIP switch, see table on the module or page
22 and 23.
The DIP switches 1, 2 and 3 set the minimum input tempera-
ture range

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.

Set the "minimum" selected value on a PT 100 simulator
(when using a precision resistance decade, where necessary
observe DIN IEC 751 conversion table from °C to

!) and set

the signal conditioners output signal to 4.000 mA with the aid
of the null potentiometer. (The potentiometers are to be found
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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