GB713657A - Improvements in or relating to instruments for measuring the difference between two fluid pressures - Google Patents
Improvements in or relating to instruments for measuring the difference between two fluid pressuresInfo
- Publication number
- GB713657A GB713657A GB1613051A GB1613051A GB713657A GB 713657 A GB713657 A GB 713657A GB 1613051 A GB1613051 A GB 1613051A GB 1613051 A GB1613051 A GB 1613051A GB 713657 A GB713657 A GB 713657A
- Authority
- GB
- United Kingdom
- Prior art keywords
- piston
- pressure
- oil
- groove
- measuring
- 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
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/16—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of pistons
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
713,657. Pressure gauges. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 6, 1952 [July 6, 1951], No. 16130/51. Class 106 (2) A gauge for measuring the difference between two fluid pressures comprises a piston 27 having piston rods 29, 33 extending into the atmosphere in each direction of the piston through the end walls of a cylinder 26 in which the piston 27 moves, one of the piston rods 29 having means 34 by which the differential pressure may be measured and the cross-sectional area of the two piston rods being equal in order to balance the effect of atmospheric pressure. One pressure is applied to the top of the piston 27 through the medium of a volume of oil 36 and the higher pressure is applied to the bottom of the piston 27 through the medium of a second volume of oil 37. A duct 44 branches from a duct 39 and communicates with a groove 45 surrounding the middle portion of an upper bore 28. This ensures lubrication and sealing of the piston rod 29 when a pressure less than atmos-. pheric is applied through the pipe S. A groove 46 in the lower bore 32 serves a similar purpose, this groove being supplied with oil from a third reservoir not shown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1613051A GB713657A (en) | 1951-07-06 | 1951-07-06 | Improvements in or relating to instruments for measuring the difference between two fluid pressures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1613051A GB713657A (en) | 1951-07-06 | 1951-07-06 | Improvements in or relating to instruments for measuring the difference between two fluid pressures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB713657A true GB713657A (en) | 1954-08-18 |
Family
ID=10071721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1613051A Expired GB713657A (en) | 1951-07-06 | 1951-07-06 | Improvements in or relating to instruments for measuring the difference between two fluid pressures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB713657A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3077102A (en) * | 1958-09-23 | 1963-02-12 | Greer Hydraulics Inc | Gauge calibration unit |
| US3133435A (en) * | 1956-05-28 | 1964-05-19 | Cons Electrodynamics Corp | Air dead weight tester |
| CN110118629A (en) * | 2019-05-31 | 2019-08-13 | 辽宁红沿河核电有限公司 | A kind of nuclear power station atmospheric pressure measurement device |
-
1951
- 1951-07-06 GB GB1613051A patent/GB713657A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133435A (en) * | 1956-05-28 | 1964-05-19 | Cons Electrodynamics Corp | Air dead weight tester |
| US3077102A (en) * | 1958-09-23 | 1963-02-12 | Greer Hydraulics Inc | Gauge calibration unit |
| CN110118629A (en) * | 2019-05-31 | 2019-08-13 | 辽宁红沿河核电有限公司 | A kind of nuclear power station atmospheric pressure measurement device |
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