Model 675 User Instructions 37
6. Once the calibration is accepted in step 5, press [ENTER] at the
ENTER=SAVE prompt and again at the ENTER=EXIT prompt to save the new
calibration and exit the calibration mode.
- or -
6a. To exit the calibration mode without saving the new calibration, press [CLR] at
the ENTER=SAVE prompt. Then press [ENTER] at the ENTER=UNDO
prompt and again at the ENTER=EXIT prompt to exit the calibration mode.
4.3.5 Calibration Reset
Cal Reset sets the gain factors of the A/D amplifier to minimum values and clears the
A/D's zero offset. A Cal Reset should be performed if calibration is not possible due to
an over-load condition, or if the displayed weight value does not change when the test
weight is applied.
1. Access the calibration mode as described on page 33.
2. Select the Cal Reset calibration method as described in Calibration Methods
on page 33.
3. Press [ENTER] at the Cal Reset prompt reset the A/D amplifier.
4. The display prompts New Zero?. Proceed with New Zero calibration. Refer to
page 34.
If an over-load condition exists at the time of calibration, the calibration method
prompts are replaced by an Over load! message. Press [CLR] to proceed directly to
the Cal Reset procedure.
4.3.6 Known Loadcell Output
Known LCOut is used to calibrate without test weights. The exact full scale mV/V
rating must be known for each load cell. All load cells must be of the same full scale
capacity. This procedure works best for hopper scales where weight is evenly
distributed and signal trimming is not required.
1. Access the calibration mode as described on page 33.
2. Select the Known LCOut calibration method as described in Calibration
Methods on page 33.
3. Press [ENTER] at the Known LCOut prompt to display #of LC.
3a. The number of load cells specified during the last calibration will also be
displayed. A value of zero (0) indicates that this calibration method has not yet
been performed.
4. Key in the number of load cells (8 maximum) and press [ENTER].
- or -
4a. Press [ENTER] to accept the displayed value.
5. The display prompts LC#x mVv (where 'x' is the load cell number) and then
shows the mV/V value (0.1 - 5.0) last entered for this load cell.
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