76
Adjusting the Weighing Platform
Adjusting the Off-center Load
If the weighing platform has only one load cell, the off-center load is not adjusted
in case of error; rather, the load cell must be replaced.
The off-center load is adjusted only in weighing platforms that have four load
cells.
Procedure (Example Illustrated on the Left)
– Place the test weight (1000 lb) on the weighing platform and write down the
weight values measured.
– The load cell with the lowest weight value (9972 lb) is the reference load cell.
This load cell does not require adjustment.
– Calculate the difference between the weight value registered by this load cell
and those registered by the other load cells.
– Plot the point of intersection of the calculated off-center load difference
(x-axis) and the test weight (see page 77).
– The adjustment resistance (total) and the best resistor combination can be read
from the y-axis (see the diagram on page 77).
In the example given here, load cell 3 has an off-center loading error of 8 lb,
which yields an adjustment resistance of 1.5 ohm + 0.82 ohm.
– Depending on the resistor combinations of each individual load cell, the
required resistors are activated by disconnecting the corresponding “0-ohm
resistor” (see page 78).
Note: The resistance values detected are based on 350-ohm load cells.
For 700-ohm load cells, double the resistance values.
Eckl_2_usa.eps
Load cell 1
1260 lb
Load cell 2
1255 lb
Load cell 3
1254 lb
reference Load cell 4
1246 lb
(Example: reference Load cell +80 lb)
Test weight
1250 lb
To Next Page
Loading...
Need help?
General
