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Method and device for fluid sampling

  • US 6,993,985 B2
  • Filed: 11/26/2003
  • Issued: 02/07/2006
  • Est. Priority Date: 03/04/2003
  • Status: Expired due to Fees
First Claim
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1. A fluid stream sampler for variable flow rate controlled air sampling, the sampler comprising:

  • (a) a housing body having a vacuum outlet opening formed therein, a sampling port inlet formed therein, and a flowpath extending between the outlet opening and the inlet;

    (b) a volumetric flow rate indicator disposed in the flowpath between the vacuum outlet opening and the sampling port inlet;

    (c) a hose, fluidly connected at one end to a vacuum source, has a fitting at the other end thereof that is insertable into the vacuum outlet opening;

    (d) an adjustable damper panel interposed in the flowpath regulates the vacuum pressure within the housing body;

    whereby a vacuum imparted by the vacuum source directs a fluid stream through the housing body along the flowpath between the vacuum outlet opening and the sampling port inlet such that, upon moving the damper panel to a desired position within the flowpath, a desired volumetric flow rate is achieved as measured by the indicator, the desired volumetric flow rate corresponding to a preferred flow rate specified for a fluid constituent sampling medium interposed in the flowpath at the sampling port inlet.

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