WIKA FSD-4 Mode D'emploi page 12

5. Commissioning, operation
Risers and vertical pipes
EN
Mounting the flow switch in downpipes open towards the bottom is impermissible. This use does not comply with the
intended use.
5.1.3 Sensor alignment
During mechanical assembly of the FSD-4, make sure
that the installation mark points in the opposite direction
of the flow direction of the medium.
5.1.4 Sealing
For sealing the process connections with parallel
threads, use flat gaskets, lens-type sealing rings or WIKA
profile sealings at the sealing face. With a tapered thread
(e.g. NPT thread), sealing is made in the thread using
additional sealing materials, e.g. PTFE tape (EN 837-2).
For further information on sealings
see WIKA data sheet AC 09.08 or at
www.wika.com
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Installation
mark
WIKA operating instructions flow switch, model FSD-4