VEGA VEGASON 71 - D - Manual (Page 4)

VEGASON 71 - D 4
1 Introduction
1 Introduction
1.1 Contents of the instruction manual
The Technical Information / Operating Instructions is
called TIB. It contains all necessary information for correct
- installation
- connection
- set-up
- linearization
- optimization
of the pulse-echo-measuring system VEGASON 71 - D.
VEGA regularly revises the contents of TIBs as technical
improvements are made to the instruments.
1.2 Safety information
The described module must only be installed and operated
as described in this TIB. Please note that other action can
cause damage for which VEGA does not accept
responsiblity.
1.3 Product description
The pulse-echo measuring system VEGASON 71 - D is
used for flow and level measurement.
The running periods of periodically emitted sound impulse
packets which are reflected by the flow product to be
measured are evaluated.
The running period of sound is a measure of the distance
between sensor and liquid surface.
The control electronics determines this distance and
converts it into flow information.
The measuring results are indicated on the integral LC-
display and acc. to the version, provided as relay and
current outputs.
A measuring system consists of
-
a central electronics and
- a sensor.
The sensor is provided with a temperature sensor for
compensation of the temperature influence to the sound
running period. Measuring data and temperature
information are transmitted along the same coaxial cable.
All adjustment procedures, optimizations etc. can be
directly programmed via a keyboard on the central
electronics.
1.4 Approvals
If a measuring system is mounted acc. to the following
approval, the respective legal document has to be used
and the regulations have to be strictly observed.
Approvals for hazardous areas, certificate acc. to
CENELEC.
Consisting of:
-
central electronics VEGASON 71 - D
- sensor SW 71 R Ex
defined in the conformity certificate PTB-no.
Ex-94.C.4066.
The conformity certificate is included with the product on
delivery.