WIKA 5 Serie Manual De Instrucciones página 12

6. Commissioning, operation
For parallel threads, use flat gaskets, lens-type sealing rings or WIKA profile
EN
sealings at the sealing face . With tapered threads (e.g. NPT threads), sealing is
made in the threads , using a suitable sealing material (EN 837-2).
Sealing face
The torque depends on the sealing used. In order to orientate the measuring
instrument so that it can be read as well as possible, a connection with clamp
socket or union nut should be used. When a blow-out device is fitted to a instru-
ment, it must be protected against being blocked by debris and dirt.
Requirements for the installation point
If the line to the measuring instrument is not adequately stable, an instrument
mounting bracket should be used for fastening. If vibrations cannot be avoided
by means of suitable installation, instruments with liquid filling should be used.
The instruments should be protected against coarse dirt and wide fluctuations in
ambient temperature.
Installation
Nominal position per EN 837-3 / 9.6.6 figure 7: 90° ( ⊥ )
„
Process connection lower mount
„
With filled versions the vent valve at the top of the case must be opened before
„
commissioning!
For outdoor applications, the selected installation location has to be suitable
„
for the specified ingress protection, so that the instrument is not exposed to
impermissible weather conditions.
In order to avoid any additional heating, the instruments must not be exposed
„
to direct solar irradiation while in operation!
To ensure that the pressure can be safely vented in the case of failure, instru-
„
ments with blow-out device or blow-out back must keep a minimum distance of
20 mm from each object.
12
Spanner flats

WIKA operating instructions pressure gauge model 5 per ATEX
Sealing in the
thread
