EN
WIKA operating instructions DELTA-plus, DELTA-comb and DELTA-switch
12
14532078.01 12/2021 EN/DE
4.
Design and function
4.1
Description
4. Design and function
DELTA-plus model DPG40
The display case (1) is connected directly with the measuring chamber (2) and
the process connections integrated in it.
Pressures p1 and p2 act on the media chambers ⊕ and ⊖, which are separated
by an elastic diaphragm (3).
The differential pressure (∆p = p1 - p2) leads to an axial deflection of the
diaphragm against the measuring range springs (4).
The deflection, which is proportional to the differential pressure, is transmitted to
the movement (7) in the display case via a pressure-tight and low-friction rocker
arm (6).
Overload safety is provided by metal bolsters (5) resting against the elastic
diaphragm.
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