VEGA VEGATRENN 149A Ex - Manual (Page 14)

14
3 Product description
VEGATRENN 149A Ex • Ex-separator for 4 … 20 mA/HART
24816-01-131025
as well as the valid safety regulations and
accident prevention rules must be observed by
the user.
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.
The safety approval markings and safety tips on
the device must also be observed.
2.5 CE conformity
The device fulfills the legal requirements of the
applicable EC guidelines. By affixing the CE
marking, we confirm successful testing of the
product.
You can find the CE Certificate of Conformity in
the download section of our homepage.
2.6 Safety instructions for Ex
areas
Please note the Ex-specific safety information
for installation and operation in Ex areas. These
safety instructions are part of the operating
instructions manual and come with the Ex-
approved instruments.
2.7 Environmental instructions
Protection of the environment is one of our most
important duties. That is why we have introdu-
ced an environment management system with
the goal of continuously improving company
environmental protection. The environment
management system is certified according to
DIN EN ISO 14001.
Please help us fulfill this obligation by observing
the environmental instructions in this manual:
•
Chapter "Packaging, transport and storage"
•
Chapter "Disposal"
3 Product description
3.1 Configuration
Scope of delivery
The scope of delivery encompasses:
•
VEGATRENN 149A Ex separator
•
Documentation
– this operating instructions manual
– Ex-specific "Safety instructions" (depen-
ding on the version)
– if necessary, further certificates
Type plate
The nameplate contains the most important
data for identification and use of the instrument:
•
Article number
•
Serial number
•
Technical data
•
Article numbers, documentation
The order data and the documentation of the
instrument can be retrieved by means of the
instrument serial number on the type label. To
do this, go to www.vega.com, "VEGA Tools" and
"serial number search".
3.2 Principle of operation
Application area
VEGATRENN 149A Ex is an [EEx ia] separator
with separate power supply for connection of
4 … 20 mA/HART sensors in two-wire version.
As an associated electrical device, it ensures a
galvanic separation between sensor circuit and
processing circuit and thus between Ex and
non-Ex areas.
Functional principle
An integrated transmitter power supply powers
the connected sensor. The current signal from
the sensor (4 … 20 mA) is transferred linearly
and galvanically separated to the output. The
HART communication sockets in the front enab-
le a bidirectional transmission of HART signals.
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
There are no adjustment elements on VEGAT-
RENN 149A Ex. A parameter adjustment of the
connected sensors can be carried out via the
HART communication sockets. The adjust-
ment of the connected sensors is carried out
preferrably via a Windows PC with a parameter
adjustment software such as PACTware and