9
P6A
Parts in contact with the medium are made of 1.4301 and 1.4542 stainless
steel. Any fluid or gas (vapour) that does not attack these steels is a suitable
measurement medium. The pressure transducer is attached by means of its
threaded connector for the pressure connector and can be installed in any
position. In particular cases there are specific instructions in Chap. 4
”Assembly” which must be followed!
3
Construction and operating mode
The internal measurement tube bears the strain gauges that are connected to
a Wheatstone bridge. The SG application is located in a hermetically sealed
reference chamber. This protects it from ambient effects and the pressure
measurement is not affected by the ambient pressure (absolute pressure
transducer).
The measuring membrane is strained by the pressure applied. As a result,
with thin-film strain gauges the ohmic resistance changes proportionally to the
pressure and the Wheatstone bridge is detuned.
4
Installation
Caution: Pulling on the housing or the cable entry will result in
mechanical damage to the transducer.
Pressure transducers can be screwed into place in any location. If a
transducer is used for measuring dynamic pressure trends in fluids, it must
be installed with the pressure connector upwards so that an air-bulge cannot
form in the measurement tube.
When tightening, the wrench (size 27) must only be applied
to the clamping area of the mounting flange, and not to the
housing or cable entry. The permitted tightening torque is
30Nm.
WARNING
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