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Multipurpose dynamic controlled atmosphere chamber

  • US 5,285,672 A
  • Filed: 12/13/1991
  • Issued: 02/15/1994
  • Est. Priority Date: 12/13/1991
  • Status: Expired due to Fees
First Claim
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1. A dynamic, controlled atmosphere exposure testing chamber comprising:

  • an enclosure having an air inlet port and an exhaust gas outlet port;

    means for introducing a pre-selected contaminant gas flow into said enclosure through said air inlet port;

    a gas diffusion baffle plate located inside said enclosure transversely of said enclosure and perpendicular to said gas flow direction;

    a hanger located inside said enclosure, essentially parallel to said baffle plate and downstream thereof with respect to said gas flow direction;

    a first industrial hygiene passive monitor mounted on said hanger;

    a plurality of sampling ports located in a wall of said enclosure downstream of said baffle plate;

    a first industrial hygiene active monitor connected to at least one of said sampling ports;

    a sampling pump connected to said active monitor;

    a gas chromatograph connected to one of said sampling ports;

    a total hydrocarbon analyzer connected to one of said sampling ports;

    an access port located in said enclosure wall;

    a temperature/relative humidity indicator connected to said access port; and

    means located external to said enclosure and connected to said outlet port for treating said contaminant gas before venting to the atmosphere.

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