VEGA VEGAPULS 56V - Manual (Page 52)

52 VEGAPULS 56V
• Confirm your adjustments with "OK“ and
you are again in the menu window " Adjust-
ment“.
• Click in the menu window "Adjustment“ to
"Quit“.
You are now again in the menu window " In-
strument data parameter adjustment“.
The sensor electronics has now two charac-
teristics point (min. and max.) out of which a
linear proportionality between level difference
and percentage filling of the vessel is gener-
ated. The characteristics points must natu-
rally not be at 0 % and 100 %, however the
distance should be as big as possible (e.g.
at 20 % and at 80 %). The min. distance of
the characteristics points for the min./max.
adjustment should be 50 mm product dis-
tance. When the characteristics points are
too close together, the possible measurement
failure is increased. Therefore it would be
suitable to carry out the adjustment at 0 %
and at 100 %.
In the menu " Instrument data/Parameter ad-
justment/Conditioning/Linearisation“ you can
enter later if required another linear depend-
ence between level distance and percentage
filling degree (see subchapter linearisation).
Conditioning
• Click in the menu window " Instrument data
parameter adjustment“ to "Conditioning“.
Set-up
You can carry out the min./max.-adjustment
"with medium“ (adjustment with vessel filling)
or
"without medium“ (independent of the
vessel filling, also with empty vessel). Gener-
ally you will carry out the adjustment without
medium, as you will be completely indepen-
dent from the actual vessel filling during the
adjustment.
When you want to carry out the adjustment
with medium, you have to carry out the min.
adjustment with emptied (also partly emp-
tied) vessel and the max. adjustment with
filled (also partly filled) vessel. It is easy and
quick to carry out the adjustment without
medium as shown in the example.
• Choose "no (adjustment without medium)“
• Choose in the following window if the ad-
justment should be made in meters (m) or
feet (ft).
• Enter a "Distance“ for the upper and lower
level and the appropriate "Filling degree“
in percent.
In the example the 0 %-filling is at a level
distance of 3,400 m and the 100 %-filling at a
level distance of 0,500␣ m.
Note:
The sensor can only detect levels within the
defined operating range. For detection of
levels outside the operating range, the oper-
ating range must be corrected appropriately
in the menu "
Sensor optimisation/Meas. envi-
ronment“.