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Class 73/61.78 - By pressure measurement


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the determination is made by measuring
No. of patents: 30
Last issue date: 08/21/2007


NumberTitleIssue Date
7257988Densitometer with pulsing pressure
Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which causes a density of the fluid also to oscillate according to the same ti...
08/21/2007
7152460Apparatus and method for compensating a coriolis meter
A flow measuring system is provided that provides at least one of a compensated mass flow rate measurement and a compensated density measurement. The flow measuring system includes a gas volume fraction meter in combination with a coriolis meter. The GVF meter measu...
12/26/2006
7152484Sensor for detecting a physical property between two movable bodies having high tribological strain
A sensor element (5) detects a physical measurement variable such as a pressure, a temperature, a capacitance, or a gap width between two bodies (10, 20) that move in relation to each other during operation and experience high tribological stress. In c...
12/26/2006
7134320Apparatus and method for providing a density measurement augmented for entrained gas
A flow measuring system combines a density measuring device and a device for measuring the speed of sound (SOS) propagating through the fluid flow and/or for determining the gas volume fraction (GVF) of the flow. The GVF meter measures acoustic pressures propagating...
11/14/2006
7117717Densitometer with pulsing pressure
Techniques for measuring a density of a liquid within a fluid that includes both a liquid and a gas are described. A pressure of the fluid oscillates according to a time-varying function, which causes a density of the fluid also to oscillate according to the same ti...
10/10/2006
6962070Apparatus and method for measuring characteristics of fluid spray patterns
An automated impact testing system provides reliable measurements of spray patterns of high-impact nozzles. The impact testing system includes a load cell mounted on a transport for controlled movements in two directions. The load cell includes a sensing pin extendi...
11/08/2005
6840093System and method for determining oil grade
The grade of oil used in a machine or apparatus can be determined by determining a temperature and pressure within an oil supply and determining the oil grade in response to determining the temperature and pressure. ...
01/11/2005
6804993Sensor arrangements and methods of determining a characteristic of a sample fluid using such sensor arrangements
An arrangement and method for determining one or more characteristics of a sample fluid, and a method to determine the one or more characteristic of the sample fluid, are provided. In particular, a first assembly is contained within a particular housing, and a secon...
10/19/2004
6776029Oil content measuring device and refrigeration system using the same
An oil content measuring device measures the oil content of a refrigerant in a supercritical or a vapor phase state. A refrigeration system uses the oil content measuring device. The oil content measuring device has an electrostatic capacity measuring device for mea...
08/17/2004
6775626System for automatically selecting an oil pressure sensor processing algorithm based on oil pressure sensor type
A system for automatically selecting an oil pressure sensor processing algorithm based on oil pressure sensor type includes an oil pressure sensing device producing an signal indicative of engine oil pressure, and electrically connected to one of an analog and a swi...
08/10/2004
6668625Measurement of the level of settled particles within a fluid vessel
A system and method of measuring a level of settled particles in a fluid-containing vessel includes the steps of fluidizing particles from a position below the settled level of particles, and measuring a static pressure of liquid within the vessel at a po...
12/30/2003
6568248Method and apparatus for thermodynamic analysis of a mixture of fluids
The invention relates to a method and to apparatus for thermodynamic analysis of a mixture of fluids, in which the volume of a sample of a given quantity of said mixture is caused to vary step by step and in monotonic manner, and the pressure of the sampl...
05/27/2003
6401518Fluid filled electrical device with diagnostic sensor located in fluid circulation flow path
A fluid filled transformer including a tank for containing at least primary and secondary windings, a radiator connected to the tank via top and bottom headers, a fluid disposed in the tank, a fluid circulation flow path including passages through the win...
06/11/2002
6340243Liquid/gas phase detector system
A liquid/gas phase detector system employing a sensor to detect fluid phase, flow rate, and temperature. A flow conditioner in the form of a pipe segment with an inverted V-shaped section forming a weir is adapted for coupling in a horizontal conduit down...
01/22/2002
5992222High pressure pump system and method of operation thereof
A pump system for producing high and exactly controllable pressure levels includes a piston pump which has a piston (32) connecting to a spindle shaft (22), a spindle nut (44) on said spindle shaft, a cylinder block (34) having a bore (36) for receiving s...
11/30/1999
5747673Method for measuring with great precision the volume variation occurring when fluid phases mix in order to determine physico-chemical characteristics
A containment cell with two chambers (7) in a thermostat-controlled enclosure (3) is used to measure separately, at determined pressure levels, the volumes occupied separately by fluid phases, prior to measuring at the same pressures the volume occupied b...
05/05/1998
5505074Apparatus and method for determining minimum miscibility pressure
An apparatus and method for determining the minimum miscibility pressure of a system comprising a gas and a liquid. A liquid-filled tube is equilibrated at a predetermined temperature and initial pressure, and pressure changes are determined as a single g...
04/09/1996
5376280Flocculation control system and method
A flocculation control system for controlling a feed rate of a flocculant into an aqueous slurry comprises an elongate settling tube having an open lower end for placing into the slurry. An air eductor creates a subatmospheric pressure within the settling...
12/27/1994
5182938Method and apparatus for detecting bubbles in pressurized liquid dispensing systems
A pressure transducer (58) generates an instantaneous pressure of a pressurized liquid, such as an adhesive, sealant, or caulk, being dispensed from a dispenser (52). The signal is received by a filter for filtering out non-bubble pressure disturbances. T...
02/02/1993
5020359Measuring method and device for determining a pumping characteristic or a parameter of a fluid
A measuring method and device are provided for determining at least one pumping characteristic, or a parameter, of a fluid having at least a liquid phase and a multi-phase gas phase, with the parameter being the parameter called GLR which corresponds to t...
06/04/1991
5005403Process and apparatus for the determination of the concentration of a substance dissolved in a solvent by means of an osmometer
In a process for the determination of the concentration of a substance dissolved in a solvent by means of an osmometer, comprising a two-chamber system with a first chamber having an osmosis cell and a second chamber for the measurement solution, to short...
04/09/1991
4776210Multiphase fluid flow measurement systems and methods
The total mass flowrate of a multiphase fluid flowstream such as a water, oil and gas mixture being produced from subterranean wells is determined by passing the flowstream through an apparatus which forces a substantial change in direction of the fluid f...
10/11/1988
4627273Apparatus and method for determining the minimum miscibility pressure of a gas in a liquid
An apparatus and method for determining the minimum miscibility pressure of a gas in a liquid comprises injecting a gas bubble into a transparent tube containing the liquid at a fixed predetermined pressure and temperature and observing the bubble behavio...
12/09/1986
4550590Method of and apparatus for monitoring concentration of gas in a liquid
There is described a method of and apparatus for monitoring the concentration of gas in a liquid. The apparatus includes a semi-permeable diaphragm across the face of which the liquid flows. Gas contained in the liquid permeates through the diaphragm into...
11/05/1985
4471296Measuring oxygen concentration
Disclosed is a device and a method for measuring the partial pressure of oxidizing species in a liquid. A metal or incompletely oxidized metal oxide which is susceptible to anodic oxidation and which forms an oxide having a Pilling-Bedworth ratio greater ...
09/11/1984
4461165Method of and apparatus for monitoring concentration of gas in a liquid
A method of and apparatus for monitoring the concentration of gas in a liquid includes a semi-permeable diaphragm across the face of which the liquid flows. Gas contained in the liquid permeates through the diaphragm into a chamber and the pressure within...
07/24/1984
4450712Pulp consistancy measurement
Apparatus is provided for measuring the concentration of particulate or fibrous material in a fluid flow in part of a flow line. The concentration is measured by detecting the recovery pressure downstream of a pressure reducing unit....
05/29/1984
4386518Apparatus and method for measuring low concentrations of high molecular weight polymers in solution
A system for determining the concentration of polymers in solution by measuring a differential pressure across a section of tubing through which the solution flows, where the tubing is bent in a loop. A drag reduction can be computed from the differential...
06/07/1983
4329869Apparatus for measuring the amount of air bubbles contained in liquid
A method and apparatus for measuring the amount of air bubbles contained in liquid, in which the liquid is introduced in a closed space and is then twice pressed under different pressures to compress the air bubbles in the liquid in order to provide two l...
05/18/1982
4194390Method of and apparatus for ascertaining the state of aggregation of a medium
A method of ascertaining the state of aggregation of a medium, whereby the flow of the medium is directed to a first of a series of two or more coaxially arranged nozzle means, further the initial pressure of said medium ahead of said series of nozzle mea...
03/25/1980
 
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