GB790294A - Differential fluid pressure controlled apparatus - Google Patents
Differential fluid pressure controlled apparatusInfo
- Publication number
- GB790294A GB790294A GB2465055A GB2465055A GB790294A GB 790294 A GB790294 A GB 790294A GB 2465055 A GB2465055 A GB 2465055A GB 2465055 A GB2465055 A GB 2465055A GB 790294 A GB790294 A GB 790294A
- Authority
- GB
- United Kingdom
- Prior art keywords
- secured
- pressure
- bar
- flapper
- diaphragm
- 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
- G01F1/38—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 the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
790,294. Pressure gauges. FOXBORO CO. Aug. 26, 1955 [Sept. 1, 1954], No. 24650/55. Class 106 (2). [Also in Group XXIX] A pneumatic pressure transmitter controlled in response to a differential fluid pressure includes a sealed casing 10, Fig. 2, having a resilient diaphragm 74 forming part of the wall thereof, a force bar 72 extending through and secured to the diaphragm, differential pressure responsive means, e.g. the corrugated diaphragm 40 across which the pressure differential across a fluid flow orifice is applied via ports 46, 52, connected at 86 to the force bar to turn it about an axis approximately in the plane of the resilient diaphragm and a flexible linkage system 108, 116 secured to the casing and to the force bar outside the casing to inhibit axial movement of the force bar. An upright member 78 carries at 212 a flapper 104 controlling a nozzle 152 leading from a pneumatic relay 157 containing a supply and waste valve. The flexible linkage comprises two pairs of leaf springs 108, 116 secured at their lower ends to the base 76 of the member 78, the pair 108 straddling and secured at the top on the axis of the rod 72, and the pair 116 straddling the flapper, the pairs being connected by a bar 124 adjustable at 136. A block 120 carried by the spring 116 has a bar 148 embracing the flapper. Output pressure at 30 leads from the relay 157 to an indicating or controlling device and, to provide a follow-up device, is also led via 160 to a bellows 162 acting on a lever 176 adjustably pivoted at 186 on the member 78, connected at its upper end to the block 120 and adjustably loaded by a spring 182 at its lower end. Specifications 670,427, [Group XXIX], and 672,879 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2465055A GB790294A (en) | 1955-08-26 | 1955-08-26 | Differential fluid pressure controlled apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2465055A GB790294A (en) | 1955-08-26 | 1955-08-26 | Differential fluid pressure controlled apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB790294A true GB790294A (en) | 1958-02-05 |
Family
ID=22147962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2465055A Expired GB790294A (en) | 1955-08-26 | 1955-08-26 | Differential fluid pressure controlled apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB790294A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3939712A (en) * | 1973-06-18 | 1976-02-24 | Albert Yakovlevich Jurovsky | Pneumatic differential pressure sensor |
-
1955
- 1955-08-26 GB GB2465055A patent/GB790294A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3939712A (en) * | 1973-06-18 | 1976-02-24 | Albert Yakovlevich Jurovsky | Pneumatic differential pressure sensor |
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