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L M T 1 0 0 A N D L M T 2 0 0 | M A G N E TO S T R I C T I V E L E V E L T R A N S M I T T E R S | F F O I/ L M T 1 0 0/ 2 0 0/ F F - E N R E V. A
STEP 8:
Press
to scroll to the point selection
Press
to change to point 01
Repeat the operations in steps 5-7 to set the Input and Output
Values for point 01
Repeat the preceding steps for any of the 2 points if additional
fine adjustment is needed
IMPORTANT (NOTE)
The order in which the points are set is irrelevant
To exit the calibration menu, press
selection is highlighted
Then, press
to go back to the previous menu
Calibration examples
1 Use of validation rule for Level Calibration
In the examples below, the Input span is 100 – 0 = 100 cm As
such, the Output span must be between 95 and 105 cm ('Out'
values range must be within 5% of the 'In' values range)
Examples of acceptable calibration:
Top Mount
Case 1
Point
In
Out
00
0 ->
0
01
100 ->
100
Examples of rejected calibration:
Bottom Mount
Case 4
Point
In
LVL
00
100 ->
94
01
0 ->
0
to scroll until the point
Case 2
Case 3
Case 4
Out
Out
Out
15
25
0
115
130
95
Case 5
LVL
116
10
2 Calibration moving float to both 0 and 100% points (wet
calibration)
Requirements
• Probe Length = 220 cm
• Mount Orientation = Bottom or Top
• ML = 200 cm
Procedure
• Place the float at 0%
• Capture sensor value (SVL) to assign it to <In> of
point 01
• Set 0 cm for <Out> of point 01
• Place the float at 100%
• Capture SVL to assign it to <In> of point 00
• Set 200 cm for <Out> of point 00
• End
3 Calibration moving float only to 0% point only (partially wet
calibration)
Conditions
• Probe Length = 220 cm
• Mount Orientation = Bottom or Top
• ML = 200 cm
Procedure
• Place the float at 0%
• Capture sensor value (SVL) assign it to <In> of point
01
• Set 0 cm for <Out> of point 01
• Take the <In> of point 01 and add 200 cm (for
bottom mounted transmitters) or substract 200 cm
(for top mounted transmitters)
• Example: if the <In> of point 01 on a top mounted
unit is 210.5 cm, then <In> for point 00 is 10.5 cm
• Use the resulting sum for <In> of point 00
• Set 200 cm for parameter <Out> of point 00
• End
4 Calibration stretching the zero beyond trim points
Conditions
• Device model = LMT200
• Probe Length = 220 cm
• Mount Orientation = Top
• ML = 200 cm
Procedure
• Determine the lower point to measure
• Place the float in that position and inspect the
signal on the waveform screen to make sure that
there is enough signal amplitude, that is not
merging with the end of the probe
• Back off from that position until the signal is not
merging with the end of the probe and the
amplitude is the same as in the beginning of the
probe
• Measure the distance from the desired zero mark
• Capture SVL for parameter <In> of point 01
• Set the measured distance for parameter <Out> of
point 01
• Place the float at 100%
• Capture SVL for parameter <In> of point 00
• Set 200 cm for parameter <Out> of point 00
• End
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