Measuring Cell For Absolute Pressure From The Gauge Pressure Series - Siemens SITRANS P DS III Operating Instructions Manual

3.6.3.5

Measuring cell for absolute pressure from the gauge pressure series

①
②
③
Figure 3-11
The inlet pressure (p
diaphragm
changes the resistance of the four piezoresistors (bridge circuit) of the absolute pressure
sensor. The change in the resistance causes a bridge output voltage proportional to the inlet
pressure.
SITRANS P DS III with PROFIBUS PA
Operating Instructions, 06/2013, A5E00053276-07
Measuring cell
Process connection
Seal diaphragm
Function chart of measuring cell for absolute pressure
) is transferred to the absolute pressure sensor
e
③
and the fill fluid
④
⑤
⑥
④
, displacing its measuring diaphragm. The displacement
3.6 Principle of operation
Filling liquid
Absolute pressure sensor
Inlet pressure
⑤
via the seal
Description
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