GB1490989A - Flow rate meters - Google Patents
Flow rate metersInfo
- Publication number
- GB1490989A GB1490989A GB1414274A GB1414274A GB1490989A GB 1490989 A GB1490989 A GB 1490989A GB 1414274 A GB1414274 A GB 1414274A GB 1414274 A GB1414274 A GB 1414274A GB 1490989 A GB1490989 A GB 1490989A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plate
- flow
- upstream
- march
- control member
- 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
- G01F1/20—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 detection of dynamic effects of the flow
- G01F1/22—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 detection of dynamic effects of the flow by variable-area meters, e.g. rotameters
-
- 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
-
- 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
- G01F1/42—Orifices or nozzles
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
1490989 Measuring fluid-flow INDUSTRY SECRETARY OF STATE FOR 24 March 1975 [29 March 1974 2 Dec 1974] 14142/74 and 52107/74 Heading GIR In a flow-rate meter, a passageway 22 has a divergent portion 25 and control member 27 mounted on a stem 29 slideably mounted on a support 31 and provided with a plate 28 and the arrangement is such that the fluid-flow 24 moves the plate 28 against a spring 34 to a position to create an annular orifice 38 between the plate 28 and the divergent portion 25 producing a linear relationship between the flow-rate and a chosen variable related to the area of the orifice. The periphery of the plate 28 may be in the form of a frustrum of a right circular core, Fig 1, or a symmetrical knife edge, Fig 3 (not shown) in which case the device can be used for bi-directional operation. The upstream portion of the pipe 21 may converge in the manner shown at 23, or may be a mirror image of the portion 25, Fig 1 (not shown). The single spring 34 may be replaced by a plurality of springs in parallel arranged to operate in tension or compression or a combination of both. Upstream and downstream pressure taps 36, 37 are provided. In a further embodiment, Fig 4 (not shown) the plate member has a flat circular upstream face on a hollow ogival or conical downstream portion. The pressure tappings may be arranged on the control member and flexible leads connect them to a reading indicator (not shown).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1414274A GB1490989A (en) | 1975-03-24 | 1975-03-24 | Flow rate meters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1414274A GB1490989A (en) | 1975-03-24 | 1975-03-24 | Flow rate meters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1490989A true GB1490989A (en) | 1977-11-09 |
Family
ID=10035781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1414274A Expired GB1490989A (en) | 1975-03-24 | 1975-03-24 | Flow rate meters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1490989A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0124218A1 (en) * | 1983-03-03 | 1984-11-07 | Fluid Devices Limited | Fluid-flow transducer |
US5125753A (en) * | 1989-04-03 | 1992-06-30 | Landis & Gyr Betriebs Ag | Device to measure flow-through and/or quantity of heat |
FR3035715A1 (en) * | 2015-04-29 | 2016-11-04 | Airbus Operations Sas | SYSTEM FOR DETERMINING A SENSE OF FLOW OF A GAS IN A CANALIZATION |
-
1975
- 1975-03-24 GB GB1414274A patent/GB1490989A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0124218A1 (en) * | 1983-03-03 | 1984-11-07 | Fluid Devices Limited | Fluid-flow transducer |
US5125753A (en) * | 1989-04-03 | 1992-06-30 | Landis & Gyr Betriebs Ag | Device to measure flow-through and/or quantity of heat |
FR3035715A1 (en) * | 2015-04-29 | 2016-11-04 | Airbus Operations Sas | SYSTEM FOR DETERMINING A SENSE OF FLOW OF A GAS IN A CANALIZATION |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3750710A (en) | Variable fluid orifice | |
US3047003A (en) | Flow proportioning system for foam producing apparatus | |
US3504542A (en) | Air flowmeter | |
US2734526A (en) | aagaard | |
GB783323A (en) | Constant flow control valve | |
US4254664A (en) | Flow meters | |
US3100620A (en) | Adjustable orifice for use in differential pressure apparatus | |
US2916047A (en) | Automatic regulation of the rate of flow of a fluid through a pipe or the like | |
GB1126391A (en) | Wide range flow meter | |
GB1490989A (en) | Flow rate meters | |
US3556125A (en) | Pressure regulating valves | |
GB1429932A (en) | Gas flow regulating devices | |
US3665947A (en) | Fluidic sensing circuit and pressure regulator | |
GB1094137A (en) | Fluid flow meter | |
GB1529556A (en) | Pressure drop monitoring system | |
GB1209547A (en) | Flow meter for liquids and gases | |
GB1274276A (en) | Improvements in fluidic systems and fluidic devices therefor | |
US3930519A (en) | Pressure regulator | |
GB809651A (en) | Fluid flow control apparatus | |
US2873755A (en) | Air-pressure-operated relay | |
US1991309A (en) | Pilot valve pressure controller | |
US3225340A (en) | Self-compensating low velocity trip or alarm device | |
US3178931A (en) | Pneumatic measuring apparatus | |
US3238962A (en) | Fluid-pressure function generators | |
US3621866A (en) | Fluid-mixing system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |