GB713322A - A method and a pneumatic device for making physical measurements - Google Patents
A method and a pneumatic device for making physical measurementsInfo
- Publication number
- GB713322A GB713322A GB9545/50A GB954550A GB713322A GB 713322 A GB713322 A GB 713322A GB 9545/50 A GB9545/50 A GB 9545/50A GB 954550 A GB954550 A GB 954550A GB 713322 A GB713322 A GB 713322A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- pressure
- nozzles
- valve
- 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
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
Abstract
<PICT:0713322/III/1> A gas analyser comprises an inlet duct 32 for the gas having an absolute pressure gauge P1 and branching into bridge arms 33, 35 and 34, 36 which recombine into an outlet 37, usually at atmospheric pressure. Nozzles 41-44 (i.e. restrictions each so designed that when the ratio of the exit pressure to the inlet pressure is less than the so-called "critical" figure, sonic velocity is attained in the throat and critical discharge commences in which the mass discharge from the nozzle is independent of the exit pressure) are provided in the arms 33-36, the nozzles 41, 42 being smaller than the corresponding nozzles 43, 44, and the arm 34, 36 is divided downstream of the nozzle 42 into two branches 45, 46 the latter incorporating a desiccator; or other gas conditioning device 47. A change-over valve 48 for the branches 45, 46 is fitted and the branch 65 is arranged to have the same resistance to gas flow as the device 47. In operation, the valve 48 is set so that the gas flows through the branch 45 and the differential pressure gauge DP2 is read or set to zero; the valve 48 is then changed to pass the flow through the conditioning device 47 and the gauge DP2, which may be calibrated to read directly, gives an indication of the change of condition.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US713322XA | 1949-04-18 | 1949-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB713322A true GB713322A (en) | 1954-08-11 |
Family
ID=22100655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9545/50A Expired GB713322A (en) | 1949-04-18 | 1950-04-18 | A method and a pneumatic device for making physical measurements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB713322A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3065599A (en) * | 1959-01-26 | 1962-11-27 | North American Aviation Inc | Control pressure amplifier and system |
| US3517685A (en) * | 1967-06-09 | 1970-06-30 | Bendix Corp | Gas pressure regulator |
| US4530233A (en) * | 1983-07-18 | 1985-07-23 | Air Products And Chemicals, Inc. | Method and apparatus for distinguishing between different gas or gas mixtures using a flow tube |
| CN114061933A (en) * | 2021-11-22 | 2022-02-18 | 中国科学院空间应用工程与技术中心 | System and method for testing flow characteristics and flow resistance of universal intelligent pneumatic component |
-
1950
- 1950-04-18 GB GB9545/50A patent/GB713322A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3065599A (en) * | 1959-01-26 | 1962-11-27 | North American Aviation Inc | Control pressure amplifier and system |
| US3517685A (en) * | 1967-06-09 | 1970-06-30 | Bendix Corp | Gas pressure regulator |
| US4530233A (en) * | 1983-07-18 | 1985-07-23 | Air Products And Chemicals, Inc. | Method and apparatus for distinguishing between different gas or gas mixtures using a flow tube |
| CN114061933A (en) * | 2021-11-22 | 2022-02-18 | 中国科学院空间应用工程与技术中心 | System and method for testing flow characteristics and flow resistance of universal intelligent pneumatic component |
| CN114061933B (en) * | 2021-11-22 | 2022-07-15 | 中国科学院空间应用工程与技术中心 | System and method for testing flow characteristics and flow resistance of universal intelligent pneumatic component |
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