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MSI-5300 Load Ranger Electronic Wheel Load Weighers
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User Guide
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Note: Be careful not to change the setting of the balance adjustment screw.
This is factory set to adjust the end-to-end balance of the pad. With a small
screwdriver turn the zero adjustment screw until the display reads the opposite
of the zero offset recorded in step 2. For example, if the zero offset was -250,
adjust until the display reads 250; if the zero offset was 250, adjust until the
display reads -250.
4) Turn the scale off then on again and verify the zero offset is now within
two scale divisions of “00”. If not repeat step 3.
5) Locate the span adjustment screw. Depress the zero switch. Load the
scale to capacity with a known test load. Turn the span adjustment screw
so the display indicates the weight of the test load.
6) Remove the test load. If the display does not return to zero, readjust the
zero screw so the display reads zero. Repeat steps 5 and 6 until the scale
reads the full scale test load weight accurately and returns to zero when
the load is removed.
7) Confirm linearity by checking scale accuracy while applying intermedi-
ate test loads of 25, 50, and 75% of scale capacity. (If necessary, imroved
accuracy over the entire weight range may be obtained by adjusting the
100% capacity reading one or two divisions high or low as required
and rechecking accuracy over the entire weight range).
8) Turn scale off, then on again. Record the zero offset and CAL number
displayed during the self-test sequence. The zero number should be
within two scale divisions of zero. Record the CAL number for future
reference when verifying calibration.
9) Replace the calibration access plug.
10) Your scale is now ready to use.