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Function
10 Function
14
®
The METPOINT
pressure transducer of the PRM-SP series de-
tects the relative pressure (gauge pressure) in gaseous and liq-
uid media and transforms this measured value into a linear, pres-
sure-proportional electrical output signal of 4 ... 20 mA or 0 ... 10
V.
As regards the METPOINT
nology are employed.
The body and membrane consist of 1.4548 stainless-steel materi-
al. On the membrane side that faces away from the medium, insu-
lation layers, strain gauges, compensating resistors, and conduc-
tors are applied with a combination of chemical and physical
methods, and are photolithographically structured through etch-
ing. The layers of the resistors and electrical
conductors applied on the sensor are considerably thinner than a
micrometer and are, therefore, called thin-film resistors.
Due to the materials used, the metal thin-film sensor boasts
very good resistance to many media and it is insensitive to
shocks and vibration impacts.
Since the employed materials are easily weldable, the sensor is
hermetically welded onto the pressure connection, without need-
ing additional sealing material.
®
PRM, sensors of the thin-film tech-
METPOINT
®
SP11
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