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Title: Duplex sampling apparatus and method

Abstract

An improved apparatus is provided for sampling a gaseous mixture and for measuring mixture components. The apparatus includes two sampling containers connected in series serving as a duplex sampling apparatus. The apparatus is adapted to independently determine the amounts of condensable and noncondensable gases in admixture from a single sample. More specifically, a first container includes a first port capable of selectively connecting to and disconnecting from a sample source and a second port capable of selectively connecting to and disconnecting from a second container. A second container also includes a first port capable of selectively connecting to and disconnecting from the second port of the first container and a second port capable of either selectively connecting to and disconnecting from a differential pressure source. By cooling a mixture sample in the first container, the condensable vapors form a liquid, leaving noncondensable gases either as free gases or dissolved in the liquid. The condensed liquid is heated to drive out dissolved noncondensable gases, and all the noncondensable gases are transferred to the second container. Then the first and second containers are separated from one another in order to separately determine the amount of noncondensable gases and the amount of condensablemore » gases in the sample.« less

Inventors:
 [1];  [2]
  1. Pittsburgh, PA
  2. West Mifflin, PA
Issue Date:
Research Org.:
Westinghouse Electric Corporation
OSTI Identifier:
868373
Patent Number(s):
5127258
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
duplex; sampling; apparatus; method; improved; provided; gaseous; mixture; measuring; components; containers; connected; series; serving; adapted; independently; determine; amounts; condensable; noncondensable; gases; admixture; single; sample; specifically; container; capable; selectively; connecting; disconnecting; source; differential; pressure; cooling; vapors; form; liquid; leaving; free; dissolved; condensed; heated; drive; transferred; separated; separately; amount; condensable vapor; gaseous mixture; differential pressure; improved apparatus; noncondensable gases; sampling apparatus; condensed liquid; mixture components; pressure source; noncondensable gas; selectively connect; duplex sampling; /73/95/96/

Citation Formats

Brown, Paul E, and Lloyd, Robert. Duplex sampling apparatus and method. United States: N. p., 1992. Web.
Brown, Paul E, & Lloyd, Robert. Duplex sampling apparatus and method. United States.
Brown, Paul E, and Lloyd, Robert. Wed . "Duplex sampling apparatus and method". United States. https://www.osti.gov/servlets/purl/868373.
@article{osti_868373,
title = {Duplex sampling apparatus and method},
author = {Brown, Paul E and Lloyd, Robert},
abstractNote = {An improved apparatus is provided for sampling a gaseous mixture and for measuring mixture components. The apparatus includes two sampling containers connected in series serving as a duplex sampling apparatus. The apparatus is adapted to independently determine the amounts of condensable and noncondensable gases in admixture from a single sample. More specifically, a first container includes a first port capable of selectively connecting to and disconnecting from a sample source and a second port capable of selectively connecting to and disconnecting from a second container. A second container also includes a first port capable of selectively connecting to and disconnecting from the second port of the first container and a second port capable of either selectively connecting to and disconnecting from a differential pressure source. By cooling a mixture sample in the first container, the condensable vapors form a liquid, leaving noncondensable gases either as free gases or dissolved in the liquid. The condensed liquid is heated to drive out dissolved noncondensable gases, and all the noncondensable gases are transferred to the second container. Then the first and second containers are separated from one another in order to separately determine the amount of noncondensable gases and the amount of condensable gases in the sample.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

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