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2. Design and function
2. Design and function
2.1 Overview
Dial with pressure scale and, if necessary, further individual markings
Pointer
Window
Blow-out device
1)
Case
Process connection
1) prevents the ejection of the window in the event of a sudden pressure increase in the case
2) protects against the ingress of dust and water into the case
2.2 Description
The models PG81 and PG91 are DirectDrive pressure gauges. The pointer is thus
displaced directly by the pressure element without a movement or the pointer itself is
the pressure element. The model PG81 is a DirectDrive pressure gauge with spiral tube
design and the model PG91 is with a helical tube design. In comparison with a traditio-
nal pressure gauge, the vibration and shock resistance of the model is increased and, in
addition, a particularly flat design is enabled.
2.3 Scope of delivery
Cross-check scope of delivery with delivery note.
WIKA operating instructions models PG81 and PG91
with pressure compensation film
2)
EN
5
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