VEGA VEGAMET 381 Ex - Manual (Page 22)

22
4 Mounting
VEGAMET 381 Ex • 4 … 20 mA signal conditioning instrument
30418-01-131025
unit for the connected sensor.VEGAMET 381
Ex is designed for connection of any 4 … 20 mA
sensor. The instrument is suitable for carrier rail,
panel and surface mounting.
Functional principle
The VEGAMET 381 Ex signal conditioning inst-
rument can power connected sensors and pro-
cess their measurement signals. The requested
measured variable is shown on the display and
also outputted to the integrated current output
for further processing. The measurement signal
can thus be transferred to a remote indication or
a superordinate control system. Two level relays
for control of pumps or other devices are also
integrated.
Voltage supply
Wide-range power supply unit with
20 … 253 V AC/DC for world-wide use.
Detailed information about the power supply
can be found in chapter "Technical data".
3.3 Operation
The adjustment of VEGAMET 381 Ex is carried
out via the integrated keys and a 16-step func-
tion switch.
3.4 Packaging, transport and
storage
Packaging
Your instrument was protected by packaging
during transport. Its capacity to handle normal
loads during transport is assured by a test
based on ISO 4180.
The packaging of standard instruments consists
of environment-friendly, recyclable cardboard.
For special versions, PE foam or PE foil is also
used. Dispose of the packaging material via
specialised recycling companies.
Transport
Transport must be carried out in due conside-
ration of the notes on the transport packaging.
Nonobservance of these instructions can cause
damage to the device.
Transport inspection
The delivery must be checked for completeness
and possible transit damage immediately at re-
ceipt. Ascertained transit damage or concealed
defects must be appropriately dealt with.
Storage
Up to the time of installation, the packages
must be left closed and stored according to the
orientation and storage markings on the outside.
Unless otherwise indicated, the packages must
be stored only under the following conditions:
•
Not in the open
•
Dry and dust free
•
Not exposed to corrosive media
•
Protected against solar radiation
•
Avoiding mechanical shock and vibration
Storage and transport temperature
•
Storage and transport temperature see
chapter "Supplement - Technical data -
Ambient conditions"
•
Relative humidity 20 … 85 %
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).
Hinweis:
If the instrument is mounted via the
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