EN
WIKA operating instructions DELTA-plus, DELTA-comb and DELTA-switch
13
14532078.01 12/2021 EN/DE
4. Design and function
DELTA-comb model DPGS40
Pressures p1 and p2 act on the media chambers
⊕
and
⊖
, which are separated
by an elastic diaphragm (1).
The differential pressure (∆p = p1 - p2) 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 indicator case and to the leaf springs of the microswit-
ches (5) via a pressure-tight and low friction rocker arm (3).
Overload 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) simplify the setting of the switch point.
14077593.01
⊖
⊕
