Commissioning, Operation; Mechanical Mounting - WIKA GDM-100-T Betriebsanleitung

5. Commissioning, operation

5. Commissioning, operation
5.1

Mechanical mounting

EN
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 location have to be undam-
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aged and clean.
The measuring instruments must be mounted in the common mounting position per
EN 837-1, with a max. permissible incline of 5° on all sides.
The measuring location should preferably be positioned directly at the
5.1.2 Installation
With transport or storage, it can occur that gas density monitors warm up or cool
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down and this results in pointer movements. These pointer movements are caused by
the compensation system. To make sure that the instruments have adapted sufficient-
ly 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 cross 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).
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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.
gas compartment. A measurement at the end of measuring lines prevents
optimal results through unwanted temperature differences to the main
tank.
WIKA operating instructions, model GDM-100-T