Fairbanks 5260 Series Unirail - Manual (Page 13)

The Unirail contains two (2) potentiometers located in a sealed flexible
tube inside the frame. These are used to adjust the weight indication of
an individual loadcell, to enable the Unirail to display the same weight at
each end of its weigh rail. Testing should be performed using 500 lbs
suspended on a single roller hook. The hook is then moved from load
cell No. 1 and No. 2, and the weight indications are noted and
compared. A properly adjusted Unirail will have a maximum difference
of ½ lb between opposite ends with a 500 lb load.
Note:
The adjustment is intended to achieve equal readings, which may not
necessarily be correct and accurate. When complete, final calibration is
performed with the digital weight indicator.
50019 13 03/12 - Rev. 8
A.
Calibration
Procedure
Section 3: Calibration