GB596886A - Improvements in or relating to apparatus for detecting the presence of explosive gases - Google Patents
Improvements in or relating to apparatus for detecting the presence of explosive gasesInfo
- Publication number
- GB596886A GB596886A GB1999645A GB1999645A GB596886A GB 596886 A GB596886 A GB 596886A GB 1999645 A GB1999645 A GB 1999645A GB 1999645 A GB1999645 A GB 1999645A GB 596886 A GB596886 A GB 596886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- detecting
- valve
- explosive
- dilution
- 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
- 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
- G01N27/16—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 burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
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
<PICT:0596886/III/1> In apparatus for detecting the presence of explosive gases in air or other inert gases, of the kind in which the gas passes through a detecting chamber and an indication is given in accordance with the combustibility of the mixture, the sampling line is provided with an adjustable dilution valve H by means of which inert gas may be mixed with the gas under test, and a scale J or its equivalent indicates the degree of dilution at each setting of the valve. An indication is thereby obtained of whether the proportion of explosive gas is above that giving maximum combustibility, and from the scale reading the amount of excess explosive gas may be determined. The detecting apparatus may be of the type described in Specification 567,101 in which the gas passes over an electrically heated filament forming part of a Wheatstone bridge, and the dilution valve may be associated with a liquid trap D, e.g., of the kind described in Specification 566,072, and serve as a drain therefor. The gas under test passes through passages G3 and G2, via filter G4, and inert gas is admitted through passages F2 from radial ports H2. A micrometer scale may be provided on the valve head.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB596886A true GB596886A (en) | 1948-01-13 |
Family
ID=1735142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1999645A Expired GB596886A (en) | 1945-08-03 | Improvements in or relating to apparatus for detecting the presence of explosive gases |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB596886A (en) |
-
1945
- 1945-08-03 GB GB1999645A patent/GB596886A/en not_active Expired
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