More About Calibration; Adjusting Final Calibration; Gravity Adjustment To Calibration - Rice Lake 520 Installation Manual

10. On the Linear Calibration display, select the
point (1–5) to calibrate, then click
Place test weights on scale then click
When prompted, enter the test weight value
then press Enter. Repeat for additional
linearization points, then click
the Indicator Calibration display.
11. If hooks or chains were used to hang test
weights, the Rezero dialog box prompts you
to remove weights from the scale. Remove the
weights then click
If hooks or chains were not used in the
calibration procedure, Revolution goes directly
to step 12. Calibration is complete.
12. When calibration is complete, the
fields of the Indicator Calibration
Settings
display are filled in. Click
values and return to the Revolution main
menu; to restore the previous calibration
values (including linear calibration values),
click
Restore Settings
4.4

More About Calibration

The following topics provide additional information
about compensating for environmental factors
(Section 4.4.1) and diagnostic information for
determining expected zero and span coefficients.
4.4.1

Adjusting Final Calibration

Calibration may be affected by environmental factors
including wind, vibration, and angular loading. For
example, if the scale is calibrated with 1000 lb, a
strain test may determine that at 2000 lb the
calibration is 3 lb high. In this case, final calibration
can be adjusted by tweaking WVAL to 998.5 lb. This
adjustment provides a linear correction of 1.5 lb per
1000 lb.
To adjust the final calibration, return to the
prompt and press to show the test weight value.
Press or to adjust calibration up or down. Press
to save the value, then press
CALIBR menu.
Calibrate
OK
to return to
Exit
.
OK
New
Exit to save the new
.
WVAL
to return to the
4.4.2

Gravity Adjustment to Calibration

.
This feature is used to compensate for the variance in
.
gravitational pull from one location to another.
To use gravity adjustment, the GRAVADJ parameter
must be turned on and the LATITUD and ELEVATN
(elevation in meters, relative to sea level) parameters
set for the geographic location where the calibration is
to take place. When the indicator is put into use, only
the LATITUD and ELEVATN parameters are adjusted
for the location of use.
NOTE: You must REZERO the scale as the last step
at the site of use. Gravity adjustment must be turned
on before initial calibration and LATITUD and
ELEVATN set for location of initial calibration.
Calibration 39