GB943550A - Improvements in or relating to thermal conductivity detector assemblies - Google Patents
Improvements in or relating to thermal conductivity detector assembliesInfo
- Publication number
- GB943550A GB943550A GB4172559A GB4172559A GB943550A GB 943550 A GB943550 A GB 943550A GB 4172559 A GB4172559 A GB 4172559A GB 4172559 A GB4172559 A GB 4172559A GB 943550 A GB943550 A GB 943550A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- thermal conductivity
- block
- vapour
- detector
- 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
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
- 239000007789 gas Substances 0.000 abstract 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 239000012159 carrier gas Substances 0.000 abstract 2
- 229910001369 Brass Inorganic materials 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000010951 brass Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000010926 purge Methods 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
943,550. Measuring electrically. GAS COUNCIL. Dec. 8, 1960 [Dec. 8,1959], No. 41725/59. Heading G1N. [Also in Division B1] A thermal conductivity gas/vapour detector assembly comprises a block of material having good thermal conductivity through which block are disposed at least three separate passages for gas or vapour, each passage having disposed therein a thermistor as hereunder defined. The preferred construction comprises a brass block with cylindrical gas passages. The individual cells are connected in series by tubes packed with chromatographic absorbent. The term "Thermistor" is defined as a temperature sensitive device comprising a semi-conductor,the electrical resistance of which decreases rapidly with an increase in temperature. The invention is particularly described with reference to 3 drawings (only one shown) and includes the detector block 40 housing thermistors 45, 48, 50, 53, 54, a multiple volume gas burette 58-63 with means 65 to fill, purge and measure sample pressure 66, a plurality of packed columns 47, 49, 51, 52 and associated carrier gas flow controls 41, 42, 43, 55, 56, 57. A Table shows separations effected on various column packings using argon or hydrogen as carrier gases. The difference in thermal conductivity of the gas or vapour passing through the detector is measured by a circuit not detailed in the Specification. Specification 777, 233 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4172559A GB943550A (en) | 1959-12-08 | 1959-12-08 | Improvements in or relating to thermal conductivity detector assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4172559A GB943550A (en) | 1959-12-08 | 1959-12-08 | Improvements in or relating to thermal conductivity detector assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB943550A true GB943550A (en) | 1963-12-04 |
Family
ID=10421077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4172559A Expired GB943550A (en) | 1959-12-08 | 1959-12-08 | Improvements in or relating to thermal conductivity detector assemblies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB943550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0342901A3 (en) * | 1988-05-16 | 1990-11-22 | General Electric Company | Binary gas analyzer instrument and analysis method |
-
1959
- 1959-12-08 GB GB4172559A patent/GB943550A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0342901A3 (en) * | 1988-05-16 | 1990-11-22 | General Electric Company | Binary gas analyzer instrument and analysis method |
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