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Precalibrated flow meter with airflow compensator

  • US 6,581,458 B1
  • Filed: 06/18/2001
  • Issued: 06/24/2003
  • Est. Priority Date: 08/07/1997
  • Status: Expired due to Fees
First Claim
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1. An air flow compensator which comprises a fluid flow passage having an inlet end and an outlet end;

  • a main slide element having a magnetic insert in one end thereof;

    a proximity sensor for detecting the proximity of the magnetic insert;

    a secondary slide element positioned on the main slide element and within a fluid flow passage;

    a first spring element that biases both the main slide element and the secondary slide element away from the proximity sensor; and

    a second spring element that biases only the secondary slide element away from the proximity sensor.

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