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Apparatus and method for calibrating a measuring device

  • US 5,012,667 A
  • Filed: 02/22/1990
  • Issued: 05/07/1991
  • Est. Priority Date: 03/18/1988
  • Status: Expired due to Fees
First Claim
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1. An apparatus for calibrating a measuring device, said apparatus comprising:

  • calibration signal generating means for generating, independently of the operation of the measuring device, a calibration signal, the calibration signal generating means comprising;

    power supply means for providing electrical energy to said apparatus;

    switch for activating said power supply means; and

    timer means, having a time period which expires if the time period is not restarted prior thereto, for automatically deactivating said power supply means when said time period expires; and

    communicating means for communicating said calibration signal to the measuring device without disassembling the measuring device.

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