1
About this document
1.1
Function
This operating instructions manual provides
all the information you need for mounting,
connection and setup of the instrument. Fur-
thermore there are important instructions for
maintenance, fault rectification, the exchange of
parts and the safety of the user. Please read this
information before putting the instrument into
operation and keep this manual accessible in
the immediate vicinity of the device.
1.2
Target group
This operating instructions manual is directed
to trained specialist personnel. The contents of
this manual should be made available to these
personnel and put into practice by them.
1.3
Symbols used
Information, tip, note
This symbol indicates helpful additional
information.
Caution: If this warning is ignored, faults
or malfunctions can result.
Warning: If this warning is ignored,
injury to persons and/or serious damage
to the instrument can result.
Danger: If this warning is ignored, seri-
ous injury to persons and/or destruction
of the instrument can result.
Ex applications
This symbol indicates special instruc-
tions for Ex applications.
SIL applications
This symbol indicates instructions for
functional safety which must be taken in-
to account particularly for safety-relevant
applications.
•
List
The dot set in front indicates a list with
no implied sequence.
→
Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive
steps in a procedure.
Battery disposal
VEGAMET 381 Ex • 4 ... 20 mA signal conditioning instrument
This symbol indicates special informa-
tion about the disposal of batteries and
accumulators.
2
For your safety
2.1
Authorised personnel
All operations described in this operating
instructions manual must be carried out only by
trained specialist personnel authorised by the
plant operator.
During work on and with the device the required
personal protective equipment must always be
worn.
2.2
Appropriate use
VEGAMET 381 Ex is a universal signal con-
ditioning instrument and power supply unit for
connection of a 4 ... 20 mA/HART sensor.
You can find detailed information about the area
of application in chapter "Product description".
Operational reliability is ensured only if the inst-
rument is properly used according to the speci-
fications in the operating instructions manual as
well as possible supplementary instructions.
For safety and warranty reasons, any invasive
work on the device beyond that described in the
operating instructions manual may be carried
out only by personnel authorised by the manu-
facturer. Arbitrary conversions or modifications
are explicitly forbidden.
2.3
Warning about incorrect use
Inappropriate or incorrect use of the instrument
can give rise to application-specific hazards,
e.g. vessel overfill or damage to system compo-
nents through incorrect mounting or adjustment.
Thus damage to property, to persons or environ-
mental contamination can be caused. Also the
protective characteristics of the instrument can
be influenced.
2.4
General safety instructions
This is a state-of-the-art instrument complying
with all prevailing regulations and directives. The
instrument must only be operated in a techni-
cally flawless and reliable condition. The opera-
tor is responsible for the trouble-free operation
of the instrument. When measuring aggressive
2 For your safety
21