JPS5674635A - Sensitivity confirming specimen gas of contact combustion type infalmmable gas density detector - Google Patents
Sensitivity confirming specimen gas of contact combustion type infalmmable gas density detectorInfo
- Publication number
- JPS5674635A JPS5674635A JP15061079A JP15061079A JPS5674635A JP S5674635 A JPS5674635 A JP S5674635A JP 15061079 A JP15061079 A JP 15061079A JP 15061079 A JP15061079 A JP 15061079A JP S5674635 A JPS5674635 A JP S5674635A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- oxygen
- specimen
- sensitivity
- concn
- 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.)
- Pending
Links
- 230000035945 sensitivity Effects 0.000 title abstract 4
- 238000002485 combustion reaction Methods 0.000 title abstract 3
- 239000007789 gas Substances 0.000 abstract 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 7
- 239000001301 oxygen Substances 0.000 abstract 7
- 229910052760 oxygen Inorganic materials 0.000 abstract 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 230000006866 deterioration Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
Landscapes
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE: To obtain the specimen gas which is stable extending over a long period of time, by reducing the oxygen concn. in the specimen gas to the extent of the limit amount required for the combustion exothermic action.
CONSTITUTION: Gas which does not contain oxygen is made a base, and oxygen whose amount is limited to that which is required for the combustion exothermic action, and component gas of the amount required are mixed into said gas. For instance, nitrogen is used as the base gas which does not contain oxygen, a gas cylinder is filled by pressure with the specimen gas which has mixed 500ppm oxygen and 120ppm ethanol, and when it is preserved for a long period of time, ethanol is scarcely reduced, and its high stability can be obtained. According to this constitution, when the concn. of oxygen is 500ppm, the detecting sensitivity is lowered by 5%, and the sensitivity of the detector can be confirmed enough by correcting the result of measurement. In this regard, in case when the concn. of oxygen is 2,000ppm, deterioration of the detecting sensitivity is nearly negligible, and correction is not required.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15061079A JPS5674635A (en) | 1979-11-22 | 1979-11-22 | Sensitivity confirming specimen gas of contact combustion type infalmmable gas density detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15061079A JPS5674635A (en) | 1979-11-22 | 1979-11-22 | Sensitivity confirming specimen gas of contact combustion type infalmmable gas density detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5674635A true JPS5674635A (en) | 1981-06-20 |
Family
ID=15500636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15061079A Pending JPS5674635A (en) | 1979-11-22 | 1979-11-22 | Sensitivity confirming specimen gas of contact combustion type infalmmable gas density detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5674635A (en) |
-
1979
- 1979-11-22 JP JP15061079A patent/JPS5674635A/en active Pending
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