WIKA DPS40 User Manual
Page 11
GB
WIKA operating instructions DELTA-plus, DELTA-comb and DELTA-switch
11
14093265.01 03/2014 GB/D/F/E
4. Design and function
DELTA-comb model DPGS40
Pressures p
1
and p
2
act on the media chambers ⊕ and ⊖, which are separated by
an elastic diaphragm (1).
The differential pressure (∆p = p
1
- p
2
) leads to an axial deflection of the dia-
phragm against the measuring range springs (2).
The deflection, which is proportional to the differential pressure, is transmitted
to the movement (4) in the indicating case and to the leaf springs of the micro
switches (5) via a pressure-tight and low friction rocker arm (3).
Overpressure safety is provided by metal bolsters (6) resting against the elastic
diaphragm.
The adjustment of the switch point is made by the adjustment screws accessible
from the front (7). The assistant scales (8) enable an accurate setting of the switch
points and indicate the current set point.
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