Wika DPGT40 Manuel d'utilisateur télécharger pdf (Page 11)

WIKA operating instructions dierential pressure transmitter, model DPGT40 11

14093267.01 03/2014 GB/D/F/E

4. Design and function

4.1 Description

4. Design and function

Pressures p

and p

act on the media chambers ⊕ and ⊖, which are separated by

an elastic diaphragm (1).

The dierential pressure (Δp = p

- p

) leads to an axial deection of the

diaphragm against the measuring range springs (2).

The deection, which is proportional to the dierential pressure, is transmitted to

the movement (4) in the indicating case via a pressure-tight and low friction rocker

arm (3).

A magnet (5), xed to the rear of the movement, aects the electromagnetic eld

of the HALL sensor. The signal that results from this is converted to a standardised

current output signal by the signal conditioning board (6).

Overpressure safety is provided by metal bolsters (7) resting against the elastic

diaphragm.

14077606.01

⊖ ⊕















4.2 Scope of delivery

Cross-check scope of delivery with delivery note.

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 75 76

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Wika DPGT40 Manuel d'utilisateur Page 11