User Manual

C HAPTER 3:CALIBRATION
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• If the calibration is not accurate, press [CLR].
The controller will return to the New Zero? prompt. Repeat the above
steps to calibrate.
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If the calibration weight was less than 5% of capacity, or if there was a
large change in the calibration, the controller prompts ReCal Req’d. Press
[ENTER] and repeat the calibration, or press [CLR] to obtain the CAL
OK? prompt as described above and override the re-calibration
requirement.
LAST ZERO?
The Last Zero procedure allows recalibration of the weighing device using
an existing test load. This is especially beneficial when checking high
capacity applications such as tank weighing to minimize the task of placing
and removing test weights.
1. Remove all weight from the scale
2. Press [ZERO] to zero the scale in the weigh mode.
3. Apply the calibration test weight.
4. Access the Calibration Mode (see page 23).
5. Use the [SELECT] key to toggle to Last Zero?.
6. At the Last Zero? prompt, the [ENTER] key is pressed.
7. Key in the calibration weight value in terms of the default calibration
units and press [ENTER]. For the Model 460, use the [PRINT] and
[UNITS] keys to enter numeric values. Refer to Table 2: 460 Key
Functions on page 8.
8. After establishing span, Cal OK? is displayed. Or if Recal ??? is
displayed, repeat the calibration process.
9. Press [ENTER] to save the calibration.
10. At the prompts Save Mods? and Enter = Save are displayed, [ENTER]
is pressed to save the new calibration factors.
11. At the Enter = Exit prompt, [ENTER] is pressed again and the
controller returns to the Weigh Mode.