SURVIVOR OTR Flattop Truck Scale
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8.3 Trimming Paired Sections
Now that all individual load cells are trimmed for equal output, pairs of load cells on opposite sides of the scale must be trimmed
for equal sectional output. This process is called section trimming.
1. Park the loaded weight cart in the middle of the scale and directly over an imaginary line connecting an end pair of
). Record the indicator reading.
Figure 8-4. Trimming Paired Section 1:8
2. Move the weight cart directly over the next paired cell section (2, 7 in
) then record the indicator reading.
• Repeat this for the last two paired sections (cells 3, 6, and 4, 5 in
Figure 8-5. Trimming Paired Sections 2:7, 3:6 and 4:5
3. Choose the lowest reading of the four as the reference section, which is not adjusted.
• Using the section potentiometers, reload the other three sections in turn and trim the sections to match the reading
of the reference section
• Recheck section readings a second time as the adjustment is made can be somewhat interactive
4. As a final verification of the load cell trimming, do a final corner check. Place a 1000 lb weight on one corner of the
platform and record the raw-count reading on the indicator.
5. Move the weight to all of the other corners in turn and record those readings.
• The readings should be within 0.1% of each other
1
4
3
2
8
5
6
7
1
4
3
2
8
5
6
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