5-2 Chapter 5: Calibration

The calibration procedure sets the Load Cell and the electronics to interpret the weight of an item accurately. You can calibrate the scale after power has been supplied for 30 minutes if the ambient air conditions have been 20° C (68° F) for at least 24 hours. If the ambient air conditions have not been met, then the scale must be on for at least 6 hours before you can calibrate it. One or more certified weight sets are required to calibrate and certify the scale.

Whole Pound Weight Set: NCR Part Number 998-0633009

Fractional Pound Weight Set: NCR Part Number 998-0633012

Kilogram Weight Set: Obtain locally

The EEPROM on the Scale Board maintains an audit trail of scale calibration and weigh parameter setting. The audit trail consists of two event counters. You can display the audit trail count by pressing and holding the Scale Zero button on the Operator Display Panel. The display alternates between Cal xxx and PAr xxx. The Cal value is the number of times the scale has been calibrated. The PAr value is associated with the weigh parameter setting and should never change.

Note: The audit trail can be displayed only on units with the Integrated Display or with the NCR 7825 Remote Display.

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NCR 7870 manual Calibration