GB1229446A - - Google Patents
Info
- Publication number
- GB1229446A GB1229446A GB1229446DA GB1229446A GB 1229446 A GB1229446 A GB 1229446A GB 1229446D A GB1229446D A GB 1229446DA GB 1229446 A GB1229446 A GB 1229446A
- Authority
- GB
- United Kingdom
- Prior art keywords
- venturi
- pressure
- nozzle
- measured
- sonic velocity
- 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
- G01F1/36—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 the pressure or differential pressure being created by the use of flow constriction
- G01F1/40—Details of construction of the flow constriction devices
- G01F1/44—Venturi tubes
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Volume Flow (AREA)
Abstract
1,229,446. Pressure gauges. BOWLES ENG. CORP. July 19, 1968, No.34674/68. Heading G1L . In a method of determining an absolute pressure Pa, lying within a specified range of pressures, a differential pressure #P is applied across a Venturi 2 and a nozzle 3 so arranged that the fluid flows first through the Venturi 2 below sonic velocity and then through the nozzle 3 at sonic velocity and the pressures upstream of the Venturi and at the Venturi throat are then measured. The mathematical relationship is Pa = #P/A where Pa is the absolute pressure to be found, #P is the measured differential pressure and, A is constant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3467468 | 1968-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1229446A true GB1229446A (en) | 1971-04-21 |
Family
ID=10368565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1229446D Expired GB1229446A (en) | 1968-07-19 | 1968-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1229446A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103968907B (en) * | 2013-08-23 | 2016-12-28 | 中国人民解放军国防科学技术大学 | A kind of above-critical state and the close flow measuring apparatus of gaseous hydrocarbon fuel and method |
-
1968
- 1968-07-19 GB GB1229446D patent/GB1229446A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103968907B (en) * | 2013-08-23 | 2016-12-28 | 中国人民解放军国防科学技术大学 | A kind of above-critical state and the close flow measuring apparatus of gaseous hydrocarbon fuel and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |