Alibi memory

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An alibi memory is a legal-for-trade storage system for weighing systems .

Storage types

Internal alibi memory

The internal alibi memory is permanently built into the display unit of the scale and cannot be reached from the outside, but only by completely opening the display unit. The general storage takes place on a kind of SD card , which can process a maximum storage capacity of 128  MB . In the simplest storage formula, four million lines can be generated. This type of storage is the simplest and cheapest option.

External alibi memory

The external alibi memory has an additional, external component on the scale. It is connected via the EIA-232 interface between the balance with display device and a computer . The data stored there can be called up by specific software and processed or archived on the computer. The advantage is that a larger number of scales can be connected through the data cable.

software

The software generates and saves storage formulas which are read by the balance and a scanner . The software runs without calibration-relevant restrictions.

Storage of the data

Section 9 No. 2 a and b of the Calibration Ordinance (General Regulations) (EO-AV) serves as the legal basis for storing the measurement data . The measured values ​​should then have a standard retention period of up to three months, unless longer periods are required by other general terms and conditions.

Individual evidence

  1. ↑ Simple alibi memory image ( memento of March 6, 2011 in the Internet Archive ) on OSC-CW.com (accessed on November 11, 2010)
  2. ↑ a b Brief information on the alibi memory on Waagen-Kurz.com (accessed on November 11, 2010)
  3. ↑ cf. Information from the calibration office in Hanover
  4. ↑ The convenient archiving of weighing data. Retrieved January 19, 2019 .
  5. ↑ Implementation sheet for the calibration regulations

Web links