Trouble-shooting
Micropilot S FMR533 4 to 20 mA HART
74
Hauser
9.4
Orientation of the Micropilot
For orientation a marker is found on the flange or threaded boss of the Micropilot.
During installation this must be oriented (
16):
After commissioning the Micropilot, the "
echo quality
"
(056)
indicates whether a sufficiently large
measuring signal is obtained. If necessary, the quality can be optimised later. Vice versa, the
presence of an interference echo can be used to minimise this by optimum orientation. The
advantage of this is that the subsequent tank mapping uses a somewhat lower level that causes an
increase in the strength of the measuring signal.
Proceed as follows:
#
Warning!
Subsequent alignment can lead to personal injury. Before you unscrew or loosen the process
connection, make sure that the vessel is not under pressure and does not contain any injurious
substances.
1.
It is best to empty the container so that the bottom is just covered. However, alignment can be
carried out even if the vessel is empty.
2.
Optimisation is best carried out with the aid of the envelope graph in the display or in
FieldCare.
3.
Unscrew the flange or loosen the threaded boss by a half a turn.
4.
Turn the flange by one hole or screw the threaded boss by one eighth of a turn. Note the echo
quality.
5.
Continue to turn until 360° is reached.
6.
Optimum alignment:
L00-FMRxxxxx-19-00-00-en-002
Vessel partly full, no interference echo obtained
L00-FMRxxxxx-19-00-00-en-003
Vessel partly full, interference echo obtained
level echo: highest value
level echo
level echo: highest value
false echo: smallest value
level echo
false echo
