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Class Information
Number: 73/861.03
Name: Measuring and testing > Volume or rate of flow > With indirect temperature or density compensation > Electrical > Digital
Description: Subject matter wherein the output of each transducer is an electrical signal or is converted to an electrical signal before being combined, and wherein at least one of the signals being combined contains a characteristic which is recurrent (e.g., a pulse or waveform) over a period of time, and the information in the signal is contained in the number of recurrences of the characteristic during the period of time.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7447599 |
Method and system for generating an uncertainty value |
Nov. 4, 2008 |
| 7305309 |
Transmission measuring system with high time resolution |
Dec. 4, 2007 |
| 7295934 |
Flow meter performance monitoring system |
Nov. 13, 2007 |
| RE39724 |
Respiratory humidification system |
Jul. 17, 2007 |
| 6999901 |
In-place dynamically re-sizeable persistent historical database |
Feb. 14, 2006 |
| 6611769 |
Meter register with programming and data port and meter input resolution factor |
Aug. 26, 2003 |
| 6560550 |
Device and method for indirect measurement of physical property of rock and soil |
May. 6, 2003 |
| 6421617 |
Interface including fluid flow measurement for use in determining an intention of, or an effect produced by, an animate object |
Jul. 16, 2002 |
| 6272933 |
Respiratory humidification system |
Aug. 14, 2001 |
| 6089102 |
Apparatus for measuring the volume of flowing media and a corresponding method |
Jul. 18, 2000 |
| 6035721 |
Process for compensating for the incorrect operation of measuring devices caused by external influences |
Mar. 14, 2000 |
| 5922969 |
Method and apparatus for measuring the volume of flowing liquids |
Jul. 13, 1999 |
| 5835884 |
Method of determining a characteristic of a fluid |
Nov. 10, 1998 |
| 5831175 |
Method and apparatus for correcting temperature variations in ultrasonic flowmeters |
Nov. 3, 1998 |
| 5706273 |
Liquid registration and control system having networked functional modules |
Jan. 6, 1998 |
| 5687100 |
Vibrating tube densimeter |
Nov. 11, 1997 |
| 5656784 |
Fluid density variation compensation for fluid flow volume measurement |
Aug. 12, 1997 |
| 5562101 |
Portable spirometer with improved accuracy |
Oct. 8, 1996 |
| 5501106 |
Inertia force flowmeter with pivotally supported vibrating conduit |
Mar. 26, 1996 |
| 5495769 |
Multivariable transmitter |
Mar. 5, 1996 |
| 5481924 |
Method and apparatus for assessing and quantifying pulsation induced error in gas turbine flow meters |
Jan. 9, 1996 |
| 5448919 |
Gas flow meter |
Sep. 12, 1995 |
| 5324111 |
Steam flow meter |
Jun. 28, 1994 |
| 5277196 |
Portable spirometer with improved accuracy |
Jan. 11, 1994 |
| 5270960 |
Temperature compensation device for an angular velocity sensor |
Dec. 14, 1993 |
| 5056554 |
Fluid loss, damage prevention and control system |
Oct. 15, 1991 |
| 5050094 |
Compensating method and device for instrumental error in rotary displacement flowmeter |
Sep. 17, 1991 |
| 5046369 |
Compensated turbine flowmeter |
Sep. 10, 1991 |
| 5040415 |
Nonintrusive flow sensing system |
Aug. 20, 1991 |
| 5003810 |
Fluid meter |
Apr. 2, 1991 |
| 4976153 |
Karman vortex flow meter |
Dec. 11, 1990 |
| 4969365 |
Method and apparatus for measuring the volume of a flowing liquid |
Nov. 13, 1990 |
| 4910519 |
Electronic volume correctors |
Mar. 20, 1990 |
| 4860594 |
Apparatus and method for measuring mass flow and density |
Aug. 29, 1989 |
| 4847794 |
Error compensation method for transducers having non-linear characteristics, and an assembly for carrying out said method |
Jul. 11, 1989 |
| 4839790 |
Gas accident preventive unit |
Jun. 13, 1989 |
| 4835456 |
Cryogenic density and mass-flow measurement system |
May. 30, 1989 |
| 4829449 |
Method and apparatus for measuring and providing corrected gas flow |
May. 9, 1989 |
| 4819183 |
Aircraft fuel loading management system |
Apr. 4, 1989 |
| 4799169 |
Gas well flow instrumentation |
Jan. 17, 1989 |
| 4780834 |
Apparatus for measuring mass throughput of a fluid moved in a channel |
Oct. 25, 1988 |
| 4765342 |
Timed drift compensation for rate volume monitor |
Aug. 23, 1988 |
| 4719805 |
Dry flow sensor with automatic speed compensation and totalizer circuit |
Jan. 19, 1988 |
| 4720800 |
Device for measuring liquid flow volume with temperature compensating |
Jan. 19, 1988 |
| 4663977 |
Sonic measurement of gas flow |
May. 12, 1987 |
| 4651292 |
Temperature compensation of a linear sensor |
Mar. 17, 1987 |
| 4584868 |
Apparatus for determining the supercompressibility factor of a flowing gas |
Apr. 29, 1986 |
| 4581708 |
Motor vehicle performance monitoring system |
Apr. 8, 1986 |
| 4566317 |
Borehole flow meter |
Jan. 28, 1986 |
| 4520677 |
Solids mass flow indication with radiation |
Jun. 4, 1985 |
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