Weidmuller PT 100/4 signal conditioners for voltage output Uživatelský manuál stáhnout pdf (Strana 8)

Example

Chosen measurement -50 ... +150 °C → 200 K span

range: 1 % from 200 K span = 2 K

Set minimum temperature -50 °C + 2 K = -48 °C

on the PT 100 simulator and calibrate the signal conditioner out-

put signal to 0.100 V using the null potentiometer.

Mean temperature = (ϑ

max

+ ϑ

min

)/2

= (150 °C + (-50 °C))/2

= 50 °C

Set the 50 °C value on the PT 100 simulator

Then determine ∆U: ∆U = measured value from measuring

instrument - 5.000 V

→ ∆U = 4.970 V - 5.000 V

= -0.030 V

Then calibrate the output signal to (5.000 V - ∆U) using the span

potentiometer i.e. here an example.

"5.000 V - (-0.030 V) = 5.030 V"

Then set the maximum temperature on a PT 100 simulator and

calibrate the output signal to 10.000 V using the lin potentiome-

ter.

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Weidmuller PT 100/4 signal conditioners for voltage output Uživatelský manuál Strana 8