GB465973A - Improved method of and apparatus for quantitatively determining a characteristic of a gas - Google Patents

Improved method of and apparatus for quantitatively determining a characteristic of a gas

Info

Publication number
GB465973A
GB465973A GB88636A GB88636A GB465973A GB 465973 A GB465973 A GB 465973A GB 88636 A GB88636 A GB 88636A GB 88636 A GB88636 A GB 88636A GB 465973 A GB465973 A GB 465973A
Authority
GB
United Kingdom
Prior art keywords
gas
diaphragm
changed
space
pressure gauge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB88636A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Catalyst Research Corp
Original Assignee
Catalyst Research Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Catalyst Research Corp filed Critical Catalyst Research Corp
Priority to GB88636A priority Critical patent/GB465973A/en
Publication of GB465973A publication Critical patent/GB465973A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
    • G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

<PICT:0465973/III/1> In determining the density of a gas by measuring the change in pressure of a body of standard gas into which the unknown gas diffuses through a diaphragm, the gas under test is passed over the diaphragm at a speed sufficient to prevent a material change in its composition owing to the diffusion. The minimum speed is such that the contents of the diffusion chamber are changed 300 times per minute. The volume of standard gas should not exceed 4 cubic inches of volume per square inch of diaphragm area, but it should be sufficiently large to operate the pressure gauge without being thereby changed by more than 20 per cent. In the apparatus shown, the gas to be tested flows radially over the diaphragm 8 from the inlet 18 to the outlet 17, and the standard gas is enclosed in the space 9 which communicates by the passage 19 with a pressure gauge (not shown). Another modification has a diaphragm on each side of space 9. The diaphragm is preferably composed of compressed nickel powder as described in Specification 452,764.
GB88636A 1936-01-10 1936-01-10 Improved method of and apparatus for quantitatively determining a characteristic of a gas Expired GB465973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB88636A GB465973A (en) 1936-01-10 1936-01-10 Improved method of and apparatus for quantitatively determining a characteristic of a gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB88636A GB465973A (en) 1936-01-10 1936-01-10 Improved method of and apparatus for quantitatively determining a characteristic of a gas

Publications (1)

Publication Number Publication Date
GB465973A true GB465973A (en) 1937-05-20

Family

ID=9712207

Family Applications (1)

Application Number Title Priority Date Filing Date
GB88636A Expired GB465973A (en) 1936-01-10 1936-01-10 Improved method of and apparatus for quantitatively determining a characteristic of a gas

Country Status (1)

Country Link
GB (1) GB465973A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771960A (en) * 1971-07-28 1973-11-13 Ambac Ind Gas analyzer
GB2116727A (en) * 1982-03-12 1983-09-28 Shell Int Research A device for detecting fuel differences in multigas I.C. engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3771960A (en) * 1971-07-28 1973-11-13 Ambac Ind Gas analyzer
GB2116727A (en) * 1982-03-12 1983-09-28 Shell Int Research A device for detecting fuel differences in multigas I.C. engines

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