EN
WIKA operating instructions differential pressure gauge, model DPGT40
12
14093267.05 09/2020 EN/DE
4. Design and function
4.1 Description
4. Design and function
Pressures p
1
and p
2
act on the media chambers ⊕ and ⊖, which are separated by
an elastic diaphragm
.
The differential pressure (Δp = p
1
- p
2
) leads to an axial deflection of the
diaphragm against the measuring range springs
.
The deflection, which is proportional to the differential pressure, is transmitted to
the movement
in the indicating case via a pressure-tight and low friction rocker
arm
.
A magnet
, fixed to the rear of the movement, affects the electromagnetic field of
the HALL sensor. The signal that results from this is converted to a standardised
current output signal by the signal conditioning board
.
Overpressure safety is provided by metal bolsters
resting against the elastic
diaphragm.
14077606.01
⊖
⊕
4.2 Scope of delivery
Cross-check scope of delivery with delivery note.
