AND Weighing Indicator AD-4401, Instruction Manual

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CHAPTER 5 CALIBRATION
5-1 GENERAL DESCRIPTION
In the calibration mode, you carry out an operation, which associates a load cell output voltage with a weight value, and
operations directly related to weighing. There are the following four kinds.
Actual load calibration
Calibration related functions
Digital span Calibration Modes:
Initialization of all data
Actual load calibration
This is calibration with weights.
[Zero calibration] The zero point is measured with no weight loaded.
[Span calibration] The full weighing capacity point is measured with a calibration
weight loaded.
• Once in the calibration mode, the tare value and zero compensation value are
cleared automatically.
Calibration related
functions They set the data directly related to weighing as well as basic constants for the
weighing instrument such as minimum graduation, weighing capacity, and so on.
Digital span
The zero point and span are set by entering the load cell output (mV/V) using the keys.
No calibration weight is loaded. (CALF-15 ~ CALF-17 of the Calibration related
functions,)
• [Zero calibration]
Enter the load cell output at the zero point.
• [Span calibration] Enter the difference of the load cell output between at
the full weighing capacity and at the zero point.
• Weight to Span calibration Relate the input voltage at [Span calibration] above with
weight to be displayed.
Initialization of all data All the data of the EEPROM and RAM are initialized.
•
All the data set in calibration is saved in the EEPROM and held even if the backup battery is fully discharged.
•
Do the all load cell wiring before turning the power on. Calibration may be failed if wired after turned on.