Digital techniques in load cell weighing

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Digital techniques in load cell weighing

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Typical load cell characteristics are listed and some factors concerning loading are given. An all-electronic system for digitizing the output of load cells directly is described, and details are given of some basic systems used to obtain control and information facilities from the digital weight-signals, with some fundamentals of the binary arithmetic used. Some weighing applications are mentioned and a computer-controlled weighing system is briefly described.

Inspec keywords: digital systems; weighing; control facilities

Subjects: Control applications to materials handling; Materials handling and distribution; Other aspects of analogue and digital computers

References

    1. 1)
      • Board of Trade Notice 1710 of 1963. (This states the accuracies required of weighing equipment which is to be used for trade purposes.).
    2. 2)
      • ‘Load cell terminology and test procedure recommendations’, The Scale Manufacturers Association, Inc. Washington, D.C..
    3. 3)
      • Board of Trade Notice 1474 of 1968. ‘Notes for Guidance of Inspectors’, Item (6). (Authorizes the use for trade purposes of the basic digital system described in this paper.).
    4. 4)
      • Leng, L., ‘Electronics in Weighing’, Paper published by the Institute of Weights & Measures Administration. (Describes the basic instrumentation mentioned in Section 3 of this paper.).
http://iet.metastore.ingenta.com/content/journals/10.1049/ree.1969.0091
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