Mounting; General Instructions; Mounting Instructions - VEGA VEGAMET 381 Ex Betriebsanleitung

4 Mounting

Lifting and carrying
With an instrument weight of more than 18 kg
(39.68 lbs) suitable and approved equipment
must be used for lifting and carrying.
4 Mounting
4.1

General instructions

Installation possibilities
The instrument is designed for recessed ins-
tallation in a front panel, housing front plate or
a switching cabinet door. The required cut-out
is 92 x 92 mm (3.63 x 3.63 in) according to
EN 60529. When installed correctly, protection
rating IP 40 is guaranteed. As an alternative,
the instrument can be mounted into a switching
cabinet or housing by means of three screws
(fixed with screws on rear of housing). A moun-
ting adapter for carrier rail mounting is optionally
available in the scope of delivery (top hat rail
35 x 7.5 according to DIN EN 50022/60715).
Note:
If the instrument is mounted via screws
or carrier rail, it must always be inside a
switching cabinet or protective case.
A VEGAMET 381 Ex is an auxiliary,
intrinsically safe instrument and may not
be installed in explosion-endangered
areas.
Before setup, the Ex separating chamber
must be attached to the sensor input.
Safe operation can be only ensured if
the operating instructions manual and
the EG type approval certificate are
observed. VEGAMET 381 Ex must not
be opened.
Information:
Input mode active/passive: Before
mounting VEGAMET 381 Ex, set the
requested mode of the measuring data
input. With a slide switch on the rear of
the instrument you can choose between
active and passive current input (see
chapter "Input mode active/passive").
After mounting the instrument, the slide
switch is no longer accessible.
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Ambient conditions
The instrument is suitable for standard ambient
conditions acc. to DIN/EN/IEC/ANSI/ISA/UL/
CSA 61010-1.
Make sure that the degree of contamination
specified in chapter "Technical data" meets the
existing ambient conditions.
4.2

Mounting instructions

Front panel mounting
1. Make sure that the cutout required for
installation has a size of 92 x 92 mm
(3.63 x 3.63 in). The required installation
depth is min. 90 mm (3.54 in).
2. Remove the pluggable terminal strips from
the top and bottom.
3. Screw the threaded pin [3] into the rear of
the instrument and tighten with a screwdri-
ver.
4. Insert the instrument from the front into the
front panel [1].
5. Place the clamping strap [2] from the back
over the pin [3] and pull it with the knurled
nut [4] against the panel [1].
Abb. 11: Front panel mounting
1 Front panel
2 Clamping bracket
3 Threaded pin
4 Knurled nut
Screw mounting
1. Insert the metal strap [1] from above into the
housing cut-out.
2. Fasten the instrument directly to the wall
with the three screws (max. ø 4 mm).
VEGAMET 381 Ex • 4 ... 20 mA signal conditioning instrument
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