Wika DPGT40 Manuel d'utilisateur télécharger pdf (Page 18)

WIKA operating instructions dierential pressure transmitter, model DPGT4018

14093267.01 03/2014 GB/D/F/E

7. Options and accessories / 8. Maintenance

■

Sequence of operations to nish measurement (also temporary shutdown)

1. Open the pressure compensating valve

2. Close the shut-o valve for the ⊕ and ⊖ media chamber

■

Sequence of operations to dismount the measuring instrument with a running

process

1. Close the shut-o valve for the ⊕ and ⊖ media chamber

2. Open the vent valve

7.2 Panel mounting ange

14078276.01

Panel

Cutout

8. Maintenance

The instruments are maintenance-free.

The indicator and switching function should be checked once or twice every year.

For this the instrument must be disconnected from the process to check with a

pressure testing device.

Repairs must only be carried out by the manufacturer.

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Wika DPGT40 Manuel d'utilisateur Page 18