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Polyport atmospheric gas sampler

  • US 5,404,763 A
  • Filed: 07/08/1993
  • Issued: 04/11/1995
  • Est. Priority Date: 07/08/1993
  • Status: Expired due to Fees
First Claim
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1. A multi-port gas sampler comprising:

  • a flow-through housing defining a sampling chamber and including means for accommodating a flow of gases to be sampled through the housing;

    a sample support plate including apertures extending across and enclosing the sampling chamber within the housing;

    respective gas sampling means depending into the sampling chamber and secured to the sample support plate across each of the apertures in said plate in flow-through relation to the flow of gases through the housing during sampling operations;

    normally closed stopper means mounted on the sample support plate operatively associated with each of the gas sampling means and normally blocking the flow of gases to be sampled through its respective gas sampling means; and

    means for selectively opening the stopper means associated with each of the gas sampling means, said means being mounted on the sample support plate and adapted to rotate under and selectively lift open said stopper means to accommodate a predetermined flow of gases to be sampled through the respective gas sampling means.

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