4 Mounting
4.1 General instructions
The instrument is designed for recessed installation in a front panel,
housing front plate or a switching cabinet door. The required cut-out is
92 x 92 mm according to EN 60529. When installed correctly,
protection rating IP 65 is guaranteed. As an alternative, the instrument
can be mounted into a switching cabinet or housing by means of four
screws (fixed with screws on rear of housing).
A VEGAMET 391 in Ex version is an auxiliary, intrinsically safe
instrument and may not be installed in explosion-endangered areas.
Before setup, the Ex separating wall must be attached with Ex
versions. Safe operation can be only ensured if the operating
instructions manual and the EG type approval certificate are observed.
VEGAMET 391 must not be opened.
4.2 Mounting instructions
1 Check the correct hold of the seal directly behind the front plate
and shift the instrument from the front into the front panel cut-out.
2 Shift the two tensioning elements into the provided gaps.
3 Screw in the two screws of the tensioning elements steadily with a
screwdriver.
Fig. 2: Front panel mounting
1 Front panel, front plate or switching cabinet door
2 Tensioning elements
3 Slotted screw
Installation possibilities
Front panel mounting
10 VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument
4 Mounting
36032-EN-091116
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