GB137547A - An improved method of and apparatus for detecting water vapour or either of the gaseous components thereof - Google Patents
An improved method of and apparatus for detecting water vapour or either of the gaseous components thereofInfo
- Publication number
- GB137547A GB137547A GB1403017A GB1403017A GB137547A GB 137547 A GB137547 A GB 137547A GB 1403017 A GB1403017 A GB 1403017A GB 1403017 A GB1403017 A GB 1403017A GB 137547 A GB137547 A GB 137547A
- Authority
- GB
- United Kingdom
- Prior art keywords
- salt
- detector
- water vapour
- detecting
- tube
- 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
- G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
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
137,547. Adams, H. E. F. Goold-, Bousfield, W. R., and Todd, G. W. Sept. 28, 1917. Hygrometric apparatus.-Water vapour is detected by passing the gas to be tested over a salt or substance having a definite critical hydration pressure, for example the alkaline chloride or nitrate, which takes up water only if the partial pressure of the water vapour is above the critical hydration pressure of the salt and thereby becomes a conductor, closing an electric circuit. The apparatus shown is suitable for testing a mixture of nitrogen and hydrogen, used for the synthetic production of ammonia, for the presence of oxygen. The gas to be tested is continuously sampled by a by-pass tube a and passes in succession through a drying-tube b, safety tube c, catalyst chamber d in which any oxygen present combines with hydrogen to form water vapour, then through the detecting salt and finally through a sulphuric-acid bubbler q. The dried detecting- salt may be placed between two wire gauze electrodes e, f, Fig. 2, arranged in brass tubes h cemented in a glass tube i. The salt forms part of an electric circuit containing an ammeter or galvanometer g, or a relay n, or both. The relay n may actuate a bell o, or other audible or visible alarm, or means for electro-magnetically cutting off the main supply of gases. A resistance r, equal to that of the salt when moist, may be put in parallel with the detector by a switch s for testing the circuit. A two-way valve p enables gases to be passed through the apparatus at starting without passing through the detector. The detector may be tested by drawing gas free from air or oxygen through a bubbler b' containing 20 per cent sulphuric acid having a definite vapour pressure. An alternative form of detector is shown in Fig. 4, and consists of two fine platinum wires t, t<1> wound round an insulating rod t<2>, on which a thin film of the detecting-salt has been deposited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1403017A GB137547A (en) | 1917-09-28 | 1917-09-28 | An improved method of and apparatus for detecting water vapour or either of the gaseous components thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1403017A GB137547A (en) | 1917-09-28 | 1917-09-28 | An improved method of and apparatus for detecting water vapour or either of the gaseous components thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB137547A true GB137547A (en) | 1920-01-22 |
Family
ID=10033708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1403017A Expired GB137547A (en) | 1917-09-28 | 1917-09-28 | An improved method of and apparatus for detecting water vapour or either of the gaseous components thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB137547A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742284C (en) * | 1939-04-22 | 1943-11-26 | Adolf Meier Dr Ing | Measuring device for determining the moisture content of gases |
| DE763525C (en) * | 1939-06-30 | 1953-11-02 | Ig Farbenindustrie Ag | Process for the continuous determination of low water contents in gases or vapors |
-
1917
- 1917-09-28 GB GB1403017A patent/GB137547A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742284C (en) * | 1939-04-22 | 1943-11-26 | Adolf Meier Dr Ing | Measuring device for determining the moisture content of gases |
| DE763525C (en) * | 1939-06-30 | 1953-11-02 | Ig Farbenindustrie Ag | Process for the continuous determination of low water contents in gases or vapors |
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