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4.
Calibration
NOTE:
Record all weight calibration
values for future reference.
These values allow you to swap
indicators in the field without
using test weights to recalibrate
the replacement indicator.
Caution
!
Before beginning weight
calibration with test weights,
turn off AC power to all
equipment controlled by
setpoints or their associated
digital outputs. Continuous
setpoints (with weight values
equal to or lower than the test
weights) may be tripped when
test weights are loaded and
unloaded onto the scale during
the calibration procedure.
Record WEIGHT calibration values here
OVERVIEW
The IQ plus 800/810 stores calibration values in nonvolatile memory on the
CPU board. You access these values through the CALIBRT setup menu.
If the IQ plus 800/810 has multiple scale inputs, you must do a weight
calibration for each channel.
WEIGHT CALIBRATION PROCEDURE
1.
Power up the unit for approximately 15 minutes before beginning
calibration. Place the indicator in setup mode by sliding the setup switch
on the CPU board so the display reads CONFIG. Press LEFT ARROW
until the display reads CALIBRT.
2.
Press DOWN ARROW to display CHAN 1. Press DOWN ARROW
again to display WEIGHT. Press again to display W ZERO. If W VAL
or W SPAN appears, press left or right arrows until display reads W
ZERO. Remove all load and allow time for the scale to settle.
3. Press DOWN ARROW again to display current default value. Press
ENTER and wait until a value reappears on the display. Enter this
value as "W ZERO" for channel 1 in the chart below. Repeat a few
times to verify that the results are similar each time, but not necessarily
identical. This is a numerical constant, not a weight value.
4.
Press UP ARROW to display W ZERO. Press RIGHT ARROW to
display W VAL. Press DOWN ARROW to display current default
value. Key in the test weight value and press ENTER. Enter this value
as "W VAL" in the chart for channel 1.
WEIGHT
CHANNEL 1
CHANNEL 2
CHANNEL 3
CHANNEL 4
W ZERO
W VAL
W SPAN
Calibration
4-1
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