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Only Zero
Only Zero is used for zero calibration only. This calibration procedure is primarily used for the zero
reference after changing a scale’s dead-load, such as adding safety rails to a scale deck or installing a mixer
motor on a hopper scale. Because the full scale capacity is referenced from the last zero calibration,
performing a zero calibration helps to ensure that the full scale over-load will not occur prematurely due to
the additional dead-load.
TO PERFORM AN ONLY ZERO CALIBRATION:
1. Remove all weight from the scale.
2. Access the calibration mode as described on page 23.
3. Select the Only Zero calibration method as described in Calibration Methods on page 23.
4. Press
at the Only Zero? prompt to establish the new zero reference.
5. After establishing zero, CAL OK? is displayed suggesting that the calibration is acceptable.
Accept the calibration by pressing
at the CAL OK? prompt.
- or -
Repeat the calibration by pressing
K at the CAL OK? prompt.
6. Once the calibration is accepted in step 5, press
at the ENTER=SAVE prompt and again at
the ENTER=EXIT prompt to save the new calibration and exit the calibration mode.
- or -
To exit the calibration mode without saving the new calibration, press
K at the ENTER=SAVE
prompt. Then press
at the ENTER=UNDO prompt and again at the ENTER=EXIT prompt
to exit the calibration mode.
Calibration Reset
Cal Reset sets the gain factors of the A/D amplifier to minimum values and clears the A/D’s zero offset.
These gain values are stored in the Information Parameters at P61104 Æ P61107 (see the Calibration
Parameters section). 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.
TO PERFORM A CALIBRATION RESET:
1. Access the calibration mode as described on page 23.
2. Select the Cal Reset calibration method as described in Calibration Methods on page23.
3. Press
at the Cal Reset prompt reset the A/D amplifier.
4. The display prompts
New Zero?. Proceed with calibration.
If you choose to “undo” the calibration when exiting the setup mode, you will also undo any
unsaved changes made to the setup parameters.
If an over-load condition exists at the time of calibration, the calibration method prompts are replaced by an
Over load! message. Press
K to proceed directly to the Cal Reset procedure.
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