Commissioning, Operation; Mechanical Mounting - WIKA GDM-RC-100 Mode D'emploi

5. Commissioning, operation

5. Commissioning, operation

5.1 Mechanical mounting

EN
CAUTION!
Physical injuries and damage to property and the environment
through faulty instrument
Prior to commissioning, the instrument must be subjected to a visual
inspection. Only use the instrument if it is in perfect condition with respect
to safety.
5.1.1 Requirements for the installation point
For outdoor applications, the selected installation location has to be suitable for the
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specified ingress protection, so that the instrument is not exposed to impermissible
weather conditions.
The sealing faces at the instrument and at the measuring point have to be
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undamaged and clean.
5.1.2 Installation
With transport or storage, it can occur that gas density monitors warm up or cool down
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and this results in pointer movements. These pointer movements are caused by the
compensation system. To make sure that the instruments have adapted sufficiently to
ambient temperature, at least 2 hours at 20 °C must be allowed for adaptation to the
temperature. Then, in the depressurised state, the pointer will sit within the tolerance
bar.
Corresponding to the general technical rules for pressure gauges (e.g. EN 837-2
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"Selection and installation recommendations for pressure gauges") when screwing in
the instrument, the force required to do this must not be applied through the case, but
only through the spanner flats provided for this purpose and using a suitable tool.
When screwing in, do not tilt the threads.
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For parallel threads, use flat gaskets, lens-type sealing rings or WIKA profile 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).
The tightening 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 LH-RH union or
union nut should be used. When a blow-out device is fitted to an instrument, it must be
protected against being blocked by debris and dirt.
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Spanner flats
Sealing face

WIKA operating instructions, model GDM-RC-100
Sealing in the thread
