Wika DPS40 Manual do Utilizador descarregar pdf (Página 12)

WIKA operating instructions DELTA-plus, DELTA-comb and DELTA-switch12

14093265.01 03/2014 GB/D/F/E

14077608.01

⊖ ⊕















DELTA-switch model DPS40

Pressures p

and p

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

by an elastic diaphragm (1).

The dierential pressure (∆p = 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 leaf springs of the micro switches (4) in the switch case via a pressure-tight

and low-friction rocker arm (3).

Overpressure safety is provided by metal bolsters (5) resting against the elastic

diaphragm.

The adjustment of the switch point is made by the adjustment screws accessi-

ble from the front (6). The assistant scales (7) enable an accurate setting of the

switch points and indicate the current set point.

4.2 Scope of delivery

Cross-check scope of delivery with delivery note.

4. Design and function

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Wika DPS40 Manual do Utilizador Página 12