GB826872A - Pressure measuring instrument - Google Patents
Pressure measuring instrumentInfo
- Publication number
- GB826872A GB826872A GB406857A GB406857A GB826872A GB 826872 A GB826872 A GB 826872A GB 406857 A GB406857 A GB 406857A GB 406857 A GB406857 A GB 406857A GB 826872 A GB826872 A GB 826872A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- mercury
- tubes
- valve
- measuring instrument
- 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
- G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Abstract
826,872. Pressure gauges. LOUGHBOROUGH GLASS CO. Ltd. Jan. 29, 1958 [Feb. 6, 1957], No. 4068/57. Class 106 (2). A pressure measuring instrument comprises two vertical non- capillary tubes 1, 2, connected by a valve or constriction 8 at their lower ends and connected at their upper ends, these tubes enclosing an inverted U-tube 5 open at each end and extending substantially the length of the tubes 1, 2, at least one branch 3 of the U-tube being a capillary, and the lower portions of the tubes 1, 2, the U-tube 5 and the valve 8 being filled with liquid. To fill the apparatus, it is evacuated through a cock 6 and then filled with mercury. It is then re-evacuated and air allowed to enter slowly, thus driving the mercury into the U-tube 5. Cock 6 is then closed and the apparatus tilted so that most of the mercury runs into tube 2, and then turned upright, valve 8 being closed, so that the mercury fills the U-tube 5 completely. When measuring pressures lower than atmospheric, the mercury in tube 5 splits, forming a vacuum and the difference in height between the mercury in tubes 1 and 2 and in the U-tube 5 is a measure of the required pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB406857A GB826872A (en) | 1957-02-06 | 1957-02-06 | Pressure measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB406857A GB826872A (en) | 1957-02-06 | 1957-02-06 | Pressure measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB826872A true GB826872A (en) | 1960-01-27 |
Family
ID=9770128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB406857A Expired GB826872A (en) | 1957-02-06 | 1957-02-06 | Pressure measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB826872A (en) |
-
1957
- 1957-02-06 GB GB406857A patent/GB826872A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB826872A (en) | Pressure measuring instrument | |
| US2509327A (en) | Micromanometer | |
| GB1452431A (en) | Manometer system | |
| US3209587A (en) | Volumetric apparatus | |
| US3884067A (en) | Tensiometer | |
| US2279611A (en) | Method of making hygrometers | |
| US2052185A (en) | Capillary liquid column gravity meter | |
| US3056299A (en) | Miniature mercury pressure gauge, particularly for measuring the bloodpressure | |
| US2274290A (en) | Hygrometer | |
| GB721388A (en) | Improvements in mercury manometers, particularly sphygmomanometers | |
| US2393552A (en) | Gauging apparatus for the measurement of vacua | |
| US1614184A (en) | Fermentation tube | |
| GB1533660A (en) | Pressure gauges | |
| GB289212A (en) | Improvements in or relating to barometric devices | |
| US2438228A (en) | Manometer | |
| SU120023A1 (en) | Capillary liquid vacuum gauge for measuring vacuum in cans | |
| US3501944A (en) | Apparatus for measuring pore size and pore volume | |
| GB831578A (en) | Improvements in or relating to apparatus including a liquid level indicator | |
| GB596917A (en) | Improvements in automatic liquid level indicators | |
| SU120355A1 (en) | Differential Barometric Altimeter | |
| GB410166A (en) | Improvements in stuffing-box substitutes for liquid-measuring and like apparatus | |
| GB1149698A (en) | Mercury column pressure gauge | |
| GB395205A (en) | Improvements in or relating to manometers | |
| SU48787A1 (en) | Electrostatic measuring device | |
| GB958320A (en) | Improvements in or relating to vacuum manometers |