Design And Function; Transport, Packaging And Storage - WIKA PHASE-OUT PSD-4 Operating Instructions Manual

4. Design and function / 5. Transport, packaging and storage

4. Design and function

4.1 Description
By means of a sensor element and by supplying power, the prevailing pressure is converted into a
switching signal or an amplified standardised electrical signal via the deformation of a diaphragm. This
electrical signal varies in proportion to the pressure and can be evaluated accordingly.
4.2 Scope of delivery
Cross-check the scope of delivery with the delivery note.
The version with G1 hygienic process connection includes pre-assembled sealings and a protection cap.

5. Transport, packaging and storage

For the protection of the diaphragm, the pressure switch is delivered with a special protection
cap.
In order to avoid damage at the diaphragm and/or the process connection thread,
■
remove the protection cap by hand only just before installation.
Keep the protection cap for subsequent storage or transport.
■
Fit the protection cap before dismounting and transporting the instrument.
■
5.1 Transport
Check the instrument for any damage that may have been caused by transport. Additionally check the
diaphragm for any optical damage.
Obvious damage must be reported immediately.
5.2 Packaging
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change in installation site,
sending for repair).
WIKA operating instructions pressure switch model PSA-31 for sanitary applications
EN
15