Weidmuller PT 100/4 signal conditioners for voltage output Manual do Utilizador descarregar pdf (Página 5)

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.

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Weidmuller PT 100/4 signal conditioners for voltage output Manual do Utilizador Página 5