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 gasInfo
- 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
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.
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)
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 |
-
1936
- 1936-01-10 GB GB88636A patent/GB465973A/en not_active Expired
Cited By (2)
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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