User Manual
Table Of Contents
- Contents
- Safety information
- Note Ex area
- Quick start
- Quick start with the PC
- Quick start with adjustment module MINICOM
- 1 Product description
- 1.1 Function
- 1.2 Application features
- 1.3 Adjustment
- 1.4 Antennas
- 2 Types and versions
- 2.1 Survey
- 2.2 Configuration of measuring systems
- 3 Technical data
- 3.1 Technical data
- 3.2 Approvals
- 3.3 Dimensions
- 4 Mounting and installation
- 4.1 General installation instructions
- 4.2 Measurement of liquids
- 4.3 Measurement in standpipe (surge or bypass tube)
- 4.4 False echoes
- 4.5 Common installation mistakes
- 5 Electrical connection
- 5.1 Connection and connection cable
- 5.2 Connection of the sensor
- 5.3 Connection of the external indicating instrument VEGADIS 50
- 6 Setup
- 6.1 Adjustment methods
- 6.2 Adjustment with PC
- 6.3 Adjustment with adjustment module MINICOM
- 6.4 Adjustment with HART® handheld
- 7.2 Error codes
- 7 Diagnostics
- 7.1 Simulation
50 VEGAPULS 42 and 44 – 4 … 20 mA
< 140 mm
(250 mm)
Mounting and installation
4.5 Common installation mistakes
Socket piece too long
If the sensor is mounted in a socket exten-
sion that is too long, false reflections are
caused, and measurement is hindered. Make
sure that the horn antenna protrudes out of
the socket piece.
Flange antenna: Correct and unfavourable socket
length
Flange antenna: Correct and unfavourable socket
length
Unfavour-
able
Correct Unfavourable
Wrong
Mounting on a vessel with parabolic tank top
Correct
~
1
/
2
vessel
radius
Wrong
Correct
Parabolic effects on dished or arched
vessel tops
Round or parabolic tank tops act like a para-
bolic mirror on the radar signals. If the radar
sensor is placed at the focal point of such a
parabolic tank top, the sensor receives am-
plified false echoes. The optimum mounting
position is generally in the range of half the
vessel radius from the centre.
Reference plane