38
3.3.7.6
Known Load Cell Out
This procedure is used to calibrate without test weights. The mV/V
rating and capacity for each loadcell must be known.
To access
"Known LCOut"
from the weigh mode:
1.
Access the Calibration Setup Menu Selection as described in
section 3.3.
2.
Press
[YES]
to access the calibration routines (see Figure 24).
3.
Press
[NET/GROSS]
to scroll to the
“Known LCOut”
calibration method.
4.
Press
[ENTER]
to display the
"#ofLC"
prompt. The number of
load cells specified during the last calibration will also be
displayed (a value of 0 indicates that this calibration method has
not yet been performed).
5.
Key in the number of load cells and press
[ENTER]
, or press
only
[ENTER]
to accept the displayed value.
6.
Display prompts
"LC #x mVv"
(where “x” is the load cell
number) and shows the mV/V value (0.1 – 5.0) last entered for
the specified load cell.
7.
Key in the load cell’s mV/V value and press
[ENTER]
, or press
only
[ENTER]
to accept the displayed value.
8.
Steps 6 – 7 will be repeated for as many load cells as specified
in step 5.
9.
Display briefly shows the calibration units, pounds, then
prompts
"LC FS"
showing the value last entered for the load
cell full scale.
10.
Key in the load cell’s full scale capacity in pounds and press
[ENTER]
, or press only
[ENTER]
to accept the displayed
value.
11.
Display briefly shows
"Calc Gains"
as it calculates new gains,
then prompts
"CurWT Zero?"
.
Press
[ENTER]
to establish the current input signal as the zero
reference,
or…
…press
[NET/GROSS]
to scroll the zero method to
“Zero=0mV/V”
(uses 0mV/V load cell output as the zero
reference) and press
[ENTER]
,
or…
…press
[NET/GROSS]
again to scroll the zero method to
“Keyin CurWt”
, key in
the known gross weight already applied
to the scale and press
[ENTER]
,
or...
…press
[CLR]
to bypass the zeroing operation.
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