AccuTools DS-220R, Руководство пользователя

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DS-220R User’s Guide
12
Calibration
The DS-220R is calibrated at the factory to provide high accuracy. While
recalibration should seldom, if ever, be necessary, recalibration is performed easily
without sending the product to the manufacturer for service. A known calibration
weight (in kilograms) is required to recalibrate the scale, and can be any value
between 5 kg and 100 kg. 25 kg is recommend. Best accuracy is obtained by using
the largest weight available (i.e. a 50 kg calibration weight will provide better
calibration accuracy than a 5 kg calibration weight). In addition, it is necessary to
know the weight to within 2 grams.
To recalibrate the DS-220R, perform the following steps:
1. Place the DS-220R weighing platform on a firm, level surface.
2. Turn the power to the DS-220R off.
3. Remove all objects from the platform.
4. While holding , press and release . The DS-220R will turn on, and after a
few seconds the display will show SET CAL and 25.000 kg .
5. Using or adjust the displayed value (in 2g increments) so that it is equal
to the weight of the reference calibration weight. Use the key to adjust in 1
kg increments.
6. Press . A number representing the weight of the unloaded platform will
appear on the display. Press to lock in this value. The display will read zero.
7. Apply the calibration weight to the platform. A number representing the applied
reference weight will appear on the display. Allow at least 10 seconds for this
number to stabilize.
8. Press . The DS-220R is now recalibrated to the reference weight.
9. Refer to the Quick Start section above for setting the desired Units and
Resolution.