Wika UPT-21 Manuel d'utilisateur télécharger pdf (Page 29)

WIKA operating instructions process transmitter, model UPT-2x

14068347.01 06/2014 GB/D

8.Congurationwithoutdisplayandoperatingunit

8. Congurationwithoutdisplayandoperatingunit

8.1 Performingamountingcorrection(oset)

The mounting correction corrects a zero oset in the output signal by dening a new

zero point. The zero oset is caused by the mounting position.

Correction range: ±20 % of maximum measuring range

Required tool: Multimeter (ammeter)

1. Screw o the case head cover and pull out the push-on cap.

2. Press [Zero] for approx. 2 s (e.g. with measuring tip of a multimeter).

Mounting correction successful: Control diode lights up for 2 s.

Mounting correction unsuccessful: Control diode blinks 5 times.

3. Check the output signal as follows.

CAUTION!

Incorrect connection.

A short circuit will destroy the process transmitter.

- Ensure that the multimeter does not come into contact with the positive

power supply terminal.

■

Set the multimeter to current measurement.

■

Connect the positive measuring line of the multimeter to the test contact.

■

Connect the negative measuring line of the multimeter to the negative power

supply terminal.







Control diode



Mounting correction, [Zero] key



Test contact



Positive power supply terminal +



Negative power supply terminal –







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Wika UPT-21 Manuel d'utilisateur Page 29