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Time of flight measurement/rate of rise measurement method for remote leak detection in evacuated spaces

  • US 5,526,678 A
  • Filed: 08/10/1994
  • Issued: 06/18/1996
  • Est. Priority Date: 08/10/1994
  • Status: Expired due to Term
First Claim
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1. Apparatus comprising:

  • an evacuated space defined at least partially by a boundary layer;

    a plurality of spaced-apart pressure gauges in communication with the evacuated space at known locations within the evacuated space;

    each pressure gauge has means for detecting pressure rise and rate of pressure rise within the evacuated space adjacent the pressure gauge, and means for generating a signal corresponding to the detection of pressure rise and rate of pressure rise;

    and means for receiving and processing the signals generated by the pressure gauges to identify the particular pressure gauge that first detects a pressure rise and the same particular pressure gauge that detects the highest rate of pressure rise as means for determining the location of the source of a leak into the evacuated space as being nearest to that gauge.

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