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Class Information
Number: 73/1.35
Name: Measuring and testing > Instrument proving or calibrating > Volume of flow, speed of flow, volume rate of flow, or mass rate of flow > With pressure measurement or plural flowmeters
Description: Subject matter wherein either (a) the apparatus for proving or calibrating or (b) the device being proven or calibrated comprises (1) means for determining a force per unit area exerted by the fluid or (2) more than one means for measuring a flow of a fluent material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7607335 |
Particulate sampler system flow calibration |
Oct. 27, 2009 |
| 7552614 |
System and method for determining functionality or accuracy of a sensor |
Jun. 30, 2009 |
| 7539560 |
Control valve and positioner diagnostics |
May. 26, 2009 |
| 7516034 |
Magnetic flow transmitter having multiple flowtube data sets |
Apr. 7, 2009 |
| 7474968 |
Critical flow based mass flow verifier |
Jan. 6, 2009 |
| 7461537 |
Device and method for calibration of a mass flow sensor |
Dec. 9, 2008 |
| 7424346 |
Apparatus and method for pressure fluctuation insensitive mass flow control |
Sep. 9, 2008 |
| 7343775 |
Device for continuous calibration of a gas mass flow measurement device |
Mar. 18, 2008 |
| 7249486 |
Method for monitoring a sensor |
Jul. 31, 2007 |
| 7152455 |
Rapid gas recovery in an incubator system |
Dec. 26, 2006 |
| 7108009 |
Semiconductor manufacturing apparatus enabling inspection of mass flow controller maintaining connection thereto |
Sep. 19, 2006 |
| 7003417 |
Multiple calibration ranges stored in a process transmitter |
Feb. 21, 2006 |
| 6948508 |
Apparatus and method for self-calibration of mass flow controller |
Sep. 27, 2005 |
| 6935156 |
Characterization of process pressure sensor |
Aug. 30, 2005 |
| 6893152 |
Method and device for evaluating a fuel gas wobbe index |
May. 17, 2005 |
| 6804991 |
Method and device for detecting a leakage in a fluid system of a blood treatment apparatus |
Oct. 19, 2004 |
| 6782333 |
Meter calibration system and apparatus |
Aug. 24, 2004 |
| 6655922 |
System and method for detecting and diagnosing pump cavitation |
Dec. 2, 2003 |
| 6654697 |
Flow measurement with diagnostics |
Nov. 25, 2003 |
| 6640614 |
Package burst pressure simulator |
Nov. 4, 2003 |
| 6626036 |
Clutch fill rate calibration apparatus and method |
Sep. 30, 2003 |
| 6561207 |
Mass flow meter systems and methods |
May. 13, 2003 |
| 6553808 |
Self-normalizing flow sensor and method for the same |
Apr. 29, 2003 |
| 6505134 |
Method of calibrating a single meter blending fuel dispensing system |
Jan. 7, 2003 |
| 6484555 |
Method of calibrating an integrated pressure management apparatus |
Nov. 26, 2002 |
| 6450200 |
Flow control of process gas in semiconductor manufacturing |
Sep. 17, 2002 |
| 6401525 |
Leak detection in liquid carrying conduits |
Jun. 11, 2002 |
| 6370936 |
Sampling apparatus for exhaust gas |
Apr. 16, 2002 |
| 6360579 |
Flowmeter calibration system with statistical optimization technique |
Mar. 26, 2002 |
| 6308553 |
Self-normalizing flow sensor and method for the same |
Oct. 30, 2001 |
| 6244310 |
Vapor recovery diagnostic testing system |
Jun. 12, 2001 |
| 6230694 |
Calibration and testing of an automotive emission control module |
May. 15, 2001 |
| 6134969 |
Automatically compensatable device for measuring a pressure difference |
Oct. 24, 2000 |
| 6125869 |
Self-diagnosis method for mass flow controller |
Oct. 3, 2000 |
| 6082415 |
Vapor recovery diagnostic testing system |
Jul. 4, 2000 |
| 6021660 |
Flexible fixture for locating different types of mass air flow sensor assemblies |
Feb. 8, 2000 |
| 5945591 |
Digital differential pressure gage and flow meter implementing signal difference processor |
Aug. 31, 1999 |
| 5894080 |
Use of a sampling apparatus for calibrating electronic mass/flow fraction meters in a pipeline |
Apr. 13, 1999 |
| 5861555 |
Method and apparatus for measuring the flow differential in a dialysis machine, and method for calibrating the apparatus |
Jan. 19, 1999 |
| 5744695 |
Apparatus to check calibration of mass flow controllers |
Apr. 28, 1998 |
| 5710370 |
Method for calibrating a differential pressure fluid flow measuring system |
Jan. 20, 1998 |
| 5705734 |
Automated branch flow calibration in a HVAC distribution system |
Jan. 6, 1998 |
| 5684245 |
Apparatus for mass flow measurement of a gas |
Nov. 4, 1997 |
| 5656784 |
Fluid density variation compensation for fluid flow volume measurement |
Aug. 12, 1997 |
| 5648605 |
Flowmeter calibration method |
Jul. 15, 1997 |
| 5504681 |
Mass air flow sensor calibration |
Apr. 2, 1996 |
| 5479812 |
On-site calibration device and method for nonlinearity correction for flow sensor/transmitter |
Jan. 2, 1996 |
| 5455781 |
Apparatus and method for determining the measurement accuracy of electronic gas meters |
Oct. 3, 1995 |
| 5408420 |
Line leak test apparatus measuring rate of pressure change in a liquid storage and dispensing system |
Apr. 18, 1995 |
| 5377524 |
Self-testing capacitive pressure transducer and method |
Jan. 3, 1995 |
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