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Method for detection of foreign matter contents in gases

  • US 5,047,723 A
  • Filed: 12/01/1988
  • Issued: 09/10/1991
  • Est. Priority Date: 06/03/1986
  • Status: Expired due to Term
First Claim
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1. A method for detecting foreign matter in gases, comprising the steps of:

  • ionizing the gas containing foreign matter in an ionization zone,passing the ionized gas containing foreign matter through a plurality of chambers, each with different electric fields,measuring field currents passing transversely through two or more of said chambers, andobtaining corresponding signals, wherein amounts and relationships of said signals provide an analysis of the foreign matter in the gases.

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