GB828730A - Improvements in or relating to measuring instruments - Google Patents
Improvements in or relating to measuring instrumentsInfo
- Publication number
- GB828730A GB828730A GB3966656A GB3966656A GB828730A GB 828730 A GB828730 A GB 828730A GB 3966656 A GB3966656 A GB 3966656A GB 3966656 A GB3966656 A GB 3966656A GB 828730 A GB828730 A GB 828730A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dynamometer
- coil
- output
- flow
- fluid
- 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
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
- G01F1/90—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure with positive-displacement meter or turbine meter to determine the volume flow
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
828,730. Electric measuring systems. GENERAL ELECTRIC CO. Ltd. Dec. 31, 1957 [Dec. 31, 1956], No. 39666/56. Class 40 (1). [Also in Group XXXVI] Apparatus for measuring the gravimetric rate of flow of a fluid comprises a dynamometer instrument, the moving coil of which is supplied with current proportional to the volumetric rate of flow of the fluid, and the fixed coil(s) of which produce(s) a magnetic field proportional to the density of the fluid. As shown, the volumetric rate of flow of petrol in a pipe 3 of an aircraft fuel system determines the frequency of the output of a pulse generator 1 which comprises a turbine wheel 2, carrying a bar magnet 4 and mounted in the pipe 3, and a pick-up coil 5 located outside the pipe adjacent the turbine 2. The pulses from generator 1 are amplified at 6 and passed to a frequency discriminator 7, the output I of which is fed to the moving coil 12 of an iron-cored dynamometer 11. The dielectric constant, K, of the fuel is sensed by using the fuel as the dielectric of a capacitor 9 which is connected to an A.C. voltage generating and rectifying circuit 10, the output I 2 of which is applied to a fixed coil 13 of the dynamometer 11. Since the density of petrol equals BK - C, where B and C are constants, and as K=EI 2 , where E is the constant of proportionality, the field due to I 2 is modified by supplying a current I 3 , equal to C/BE, from a source 15 to a second fixed coil 14 of the dynamometer 11, so that indication may be given directly in gravimetric units.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3966656A GB828730A (en) | 1956-12-31 | 1956-12-31 | Improvements in or relating to measuring instruments |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3966656A GB828730A (en) | 1956-12-31 | 1956-12-31 | Improvements in or relating to measuring instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB828730A true GB828730A (en) | 1960-02-24 |
Family
ID=10410794
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3966656A Expired GB828730A (en) | 1956-12-31 | 1956-12-31 | Improvements in or relating to measuring instruments |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB828730A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385108A (en) * | 1966-06-07 | 1968-05-28 | Combustion Eng | Net oil computer |
EP0254160A1 (en) * | 1986-07-23 | 1988-01-27 | Siemens Aktiengesellschaft | Device for measuring volume flow in a tube |
EP2626674A1 (en) * | 2012-02-09 | 2013-08-14 | Eurocopter | Method of providing an accurate volume-mass law for fuel consumption |
-
1956
- 1956-12-31 GB GB3966656A patent/GB828730A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3385108A (en) * | 1966-06-07 | 1968-05-28 | Combustion Eng | Net oil computer |
EP0254160A1 (en) * | 1986-07-23 | 1988-01-27 | Siemens Aktiengesellschaft | Device for measuring volume flow in a tube |
US4829831A (en) * | 1986-07-23 | 1989-05-16 | Siemens Aktiengesellschaft | Device for measuring flow rate in a pipe |
EP2626674A1 (en) * | 2012-02-09 | 2013-08-14 | Eurocopter | Method of providing an accurate volume-mass law for fuel consumption |
US8886448B2 (en) | 2012-02-09 | 2014-11-11 | Airbus Helicopters | Method of providing a volume-mass law for fuel consumption |
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