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Class Information
Number: 73/1.34
Name: Measuring and testing > Instrument proving or calibrating > Volume of flow, speed of flow, volume rate of flow, or mass rate of flow > With signal processing, span or set point adjustment (e.g., zero correction)
Description: Subject matter wherein the apparatus for calibrating or proving comprises means for (a) performing a significant operation on an electrical signal in accordance with an algorithm or electronic circuitry, (b) performing an arithmetical or some limited logic operation to adjust a multiplier or scale, or (c) adjusting a base value (span) or an offset (e.g., zero correction).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7624616 |
Meter proving method and system |
Dec. 1, 2009 |
| 7607335 |
Particulate sampler system flow calibration |
Oct. 27, 2009 |
| 7600485 |
Method for calibration of milk meters in a milking system |
Oct. 13, 2009 |
| 7552614 |
System and method for determining functionality or accuracy of a sensor |
Jun. 30, 2009 |
| 7543595 |
Valve calibration method and apparatus |
Jun. 9, 2009 |
| 7539560 |
Control valve and positioner diagnostics |
May. 26, 2009 |
| 7533682 |
System and method of providing water flow rate compensation |
May. 19, 2009 |
| 7523639 |
Flow meter type identification |
Apr. 28, 2009 |
| 7516034 |
Magnetic flow transmitter having multiple flowtube data sets |
Apr. 7, 2009 |
| 7508222 |
Electromagnetic flow meter |
Mar. 24, 2009 |
| 7463991 |
Mass flow verifier with flow restrictor |
Dec. 9, 2008 |
| 7424894 |
Method and apparatus for providing a determined ratio of process fluids |
Sep. 16, 2008 |
| 7383102 |
Slug flow protection system |
Jun. 3, 2008 |
| 7380564 |
System and method for a mass flow controller |
Jun. 3, 2008 |
| 7373798 |
Flowmeter/prover system and method |
May. 20, 2008 |
| 7285420 |
System and method for self-referencing a sensor in a micron-sized deep flow chamber |
Oct. 23, 2007 |
| 7280927 |
Method and system for providing a linear signal from a mass airflow and/or liquid flow transducer |
Oct. 9, 2007 |
| 7277802 |
Method and system for providing a linear signal from a mass flow transducer |
Oct. 2, 2007 |
| 7275007 |
Method for zero correction of a measuring device |
Sep. 25, 2007 |
| 7260486 |
Method for operating and/or reviewing a magneto-inductive flow meter |
Aug. 21, 2007 |
| 7249486 |
Method for monitoring a sensor |
Jul. 31, 2007 |
| 7212953 |
Portable diagnostic analysis of gas meter and electronic corrector |
May. 1, 2007 |
| 7185526 |
Flowmeter calibration techniques |
Mar. 6, 2007 |
| 7184910 |
Method of compensating sensor data and evaluating an interlock of an interlock system |
Feb. 27, 2007 |
| 7114368 |
Apparatus and method for verifying the volume of liquid dispensed by a liquid-dispensing mechanism |
Oct. 3, 2006 |
| 7107169 |
Device for estimating the mass flow of fuel |
Sep. 12, 2006 |
| 6997033 |
Flow meter pickoff assembly and flow meter pickoff adjustment method for nulling flow meter zero offset |
Feb. 14, 2006 |
| 6997032 |
Flowmeter zeroing techniques |
Feb. 14, 2006 |
| 6959254 |
Method and device for controlling and/or diagnosing a control system that influences a mass flow |
Oct. 25, 2005 |
| 6955072 |
System and method for in-situ flow verification and calibration |
Oct. 18, 2005 |
| 6928854 |
Method for detecting malfunctioning in a sensor |
Aug. 16, 2005 |
| 6920400 |
Method and apparatus for detecting a plugged port |
Jul. 19, 2005 |
| 6817241 |
Point level device with automatic threshold setting |
Nov. 16, 2004 |
| 6772082 |
Method for detecting and correcting sensor failure in oil and gas production system |
Aug. 3, 2004 |
| 6711491 |
Mass airflow sensor for pulsating oscillating flow systems |
Mar. 23, 2004 |
| 6651480 |
Particulate mass measuring method with intrinsic correction for volatilization losses |
Nov. 25, 2003 |
| 6618677 |
Method and apparatus for determining flow rates |
Sep. 9, 2003 |
| 6601439 |
Method of reducing baseline instabilities in liquid chromatographic measurements and liquid chromatography apparatus |
Aug. 5, 2003 |
| 6505134 |
Method of calibrating a single meter blending fuel dispensing system |
Jan. 7, 2003 |
| 6474132 |
Precalibrated flow meter |
Nov. 5, 2002 |
| 6439253 |
System for and method of monitoring the flow of semiconductor process gases from a gas delivery system |
Aug. 27, 2002 |
| 6430985 |
Multiple point calibrated HVAC flow rate controller |
Aug. 13, 2002 |
| 6389364 |
System and method for a digital mass flow controller |
May. 14, 2002 |
| 6370935 |
On-line self-calibration of mass airflow sensors in reciprocating engines |
Apr. 16, 2002 |
| 6357277 |
Method and equipment for the realignment of peaks in gas chromatographic analyses |
Mar. 19, 2002 |
| 6332348 |
Gas flow calibration of mass flow controllers |
Dec. 25, 2001 |
| 6321165 |
Air flow measurement apparatus |
Nov. 20, 2001 |
| 6308553 |
Self-normalizing flow sensor and method for the same |
Oct. 30, 2001 |
| 6272438 |
Vibrating conduit parameter sensors, methods and computer program products for generating residual-flexibility-compensated mass flow estimates |
Aug. 7, 2001 |
| 6249752 |
Vibrating conduit parameter sensors, operating methods and computer program productors utilizing real normal modal decomposition |
Jun. 19, 2001 |
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