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7305309 |
Transmission measuring system with high time resolution
A transmission measuring system includes a subject for transmission measurement for outputting, in response to a start signal for measurement from a central processing unit, an output signal...
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7295934 |
Flow meter performance monitoring system
Apparatus and associated systems, methods and computer program products relate to monitoring the performance of an operating gas meter by automatic and substantially continuous differential...
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6999901 |
In-place dynamically re-sizeable persistent historical database
The specification discloses a method of maintaining a historical database of information. The method describes up to eleven segments, each segment corresponding possibly to a different data logging...
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6611769 |
Meter register with programming and data port and meter input resolution factor
An electronic, programmable meter register ( 10 ) includes an input section ( 18, 19, 30 ) for generating pulses in response to units of flow in a water meter, a stored control program ( 46 ), a...
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6560550 |
Device and method for indirect measurement of physical property of rock and soil
The present invention relates to a device and method for measurement of tensile strength of materials, especially for indirectly measuring the tensile strength of weak rock and hard soil. The probe...
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6421617 |
Interface including fluid flow measurement for use in determining an intention of, or an effect produced by, an animate object
Fluid flow can be measured using a multiplicity of sensors in a manner that enables acquisition of detailed information regarding the fluid flow. In particular, the invention can advantageously be...
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6089102 |
Apparatus for measuring the volume of flowing media and a corresponding method
An apparatus and a method of measuring the volume of flowing media, especially of fuel, by means of a screw spindle volumeter, the method comprising the following steps: detecting the revolutions...
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6035721 |
Process for compensating for the incorrect operation of measuring devices caused by external influences
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5922969 |
Method and apparatus for measuring the volume of flowing liquids
A method for measuring the volume of flowing liquids under avoidance of measuring errors owing to undesired high gaseous content, wherein the gaseous content of the liquid flowing through a conduit...
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5835884 |
Method of determining a characteristic of a fluid
A method of determining a characteristic of a fluid involves measuring a sonic transit time (102), along a non-perpendicular path, through the fluid. The sonic transit time is used to determine a...
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5831175 |
Method and apparatus for correcting temperature variations in ultrasonic flowmeters
A method for correcting the effect of transducer temperature variations in an ultrasonic flowmeter. The method includes the steps of providing ultrasonic transducers having resonant frequencies...
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5706273 |
Liquid registration and control system having networked functional modules
A liquid registration and control system (30) has an intrinsically safe (IS) fiber optic network (56) for the transmission of digital data between various modules (42, 54, 58, 146) in the system...
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5687100 |
Vibrating tube densimeter
A Coriolis effect densimeter which produces density output data of improved accuracy by embodying the principal that the natural frequency of a vibrating tube filled with material decreases with an...
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5656784 |
Fluid density variation compensation for fluid flow volume measurement
A fluid density compensator for flow volume measurements utilizes a plurality of look-up calibration tables, each for a different density gas. The measurement device provides an output signal...
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5562101 |
Portable spirometer with improved accuracy
A spirometric measurement device includes an arrangement for computation of a dynamic BTPS correction factor, to compensate for temperature-related volume changes due to cooling of expired gas. The...
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5501106 |
Inertia force flowmeter with pivotally supported vibrating conduit
A mass flowmeter comprises at least one conduit supported by a frame structure in a relationship allowing an enhanced pivotal vibration about two mutually orthogonal pivot axes, an electromagnetic...
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5495769 |
Multivariable transmitter
In this invention, a multivariable transmitter providing an output representative of mass flow has a dual microprocessor structure. The first microprocessor compensates digitized process variables...
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5481924 |
Method and apparatus for assessing and quantifying pulsation induced error in gas turbine flow meters
A method and apparatus for identifying, quantifying and correcting turbine meter errors related to pulsation effects in a gas stream being measured. A turbine meter pulse rate output signal is...
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5448919 |
Gas flow meter
An improved gas flow meter which measures the time of travel of a soap film through a fixed volume to compute gas flow rate. A portable meter includes infrared sensors which detect the passing of a...
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5324111 |
Steam flow meter
A steam flow meter provided with a steam flow rate detecting device and a steam pressure and temperature detecting device. In order to accurately maintain the heating temperature of the material to...
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5270960 |
Temperature compensation device for an angular velocity sensor
An angular velocity sensor wherein an internal temperature of the sensor body is sensed by a temperature sensor and adjusted to be equal to a preset value; an offset value is obtained from an...
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5056554 |
Fluid loss, damage prevention and control system
A control system apparatus for a fluid distribution system includes a low-voltage circuit and a positive displacement disc in a throughput line such that as fluid displaces the positive...
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5046369 |
Compensated turbine flowmeter
A temperature and pressure compensated gas flowmeter is provided which reads uncompensated line parameters and outputs a frequency signal representative of the gas flow rate referenced to standard...
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5040415 |
Nonintrusive flow sensing system
A nonintrusive flow sensing system (10) and related method are provided for monitoring fluid flow within a conduit (14), particularly such as a liquid flow (12). The sensing system (10) includes an...
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5003810 |
Fluid meter
A fluid meter comprises at least three sensors each having an output dependent on a respective characteristic of the fluid to be monitored, circuitry to combine the outputs of two of the sensors to...
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4976153 |
Karman vortex flow meter
In a Karman vortex flow meter, the variation of pressure caused near both sides of a Karman vortex forming unit inserted into the stream of fluid is applied to an oscillating member which is...
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4969365 |
Method and apparatus for measuring the volume of a flowing liquid
In a method for measuring the volume of a liquid flow through a measuring chamber (2) during a measuring period, a pulse generator (12) is caused to emit a number of pulses corresponding to the...
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4910519 |
Electronic volume correctors
To obtain better accuracy, it is known to modify the mechanical metered volume reading of the flow through a gas pipeline according to the gas laws, which incorporate the pressure and temperature...
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4860594 |
Apparatus and method for measuring mass flow and density
The invention utilizes a segment of thin wall tubing which has an inlet, an outlet and a central region therebetween to measure flow. The central region is provided with two zones of different...
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4847794 |
Error compensation method for transducers having non-linear characteristics, and an assembly for carrying out said method
A method of error compensation for transducers having non-linear characteristics is shown. A computer-supported measuring circuit is used. In a first factory alignment, the output characteristic of...
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4839790 |
Gas accident preventive unit
A gas accident preventive unit has a memory circuit which is capable of memorizing in advance a continuous service safety time according to a consumed gas volume of gas apparatuses that are...
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4835456 |
Cryogenic density and mass-flow measurement system
A cryogenic density and mass-flow measurement system incorporating a high-speed microprocessor-based cryogenic fluid density instrumentation that is based on the rigorous application of the...
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4829449 |
Method and apparatus for measuring and providing corrected gas flow
A method and apparatus is disclosed for measuring flowing gas and at least one variable for calculating gas flow corrected to a base value of that variable. Illustratively, the measured variables...
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4819183 |
Aircraft fuel loading management system
A computer-controlled aircraft fuel loading management system is disclosed. The system measures fuel loading volumetrically using flow meter devices and gravimetrically using information relating...
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4799169 |
Gas well flow instrumentation
Gas well flow instrumentation includes a computation unit and an interrogation unit. The computation unit measures parameters of gas flow at the well head and accumulates gas flow information over...
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4780834 |
Apparatus for measuring mass throughput of a fluid moved in a channel
An apparatus for measuring and indicating mass throughput of a fluid moved in a channel by a processing machine includes first to fourth measurement value pickups, first to third divider stages,...
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4765342 |
Timed drift compensation for rate volume monitor
A drift compensating circuit cooperates with an air-pressure-to voltage transducer. The first input of a comparison circuit is connected to the transducer, while a reference voltage is connected to...
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4720800 |
Device for measuring liquid flow volume with temperature compensating
A device for measuring the volume of flowing liquid with temperature compensation includes a device for generating a volume signal, a device for detecting the temperature of the fluid to generate a...
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4719805 |
Dry flow sensor with automatic speed compensation and totalizer circuit
An ultrasonic speed sensor produces a linear voltage directly proportional to the speed of material falling through a chute and contacting a plate. A transducer coupled to the plate produces a...
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4663977 |
Sonic measurement of gas flow
A microcomputer is interfaced to a pair of probes for sending and receiving sonic signals across a flow stream of gas. The microcomputer reads phase information and determines a phase difference...
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4651292 |
Temperature compensation of a linear sensor
In the case of sensors having a characteristic for which the offset in the quiescent condition has a first temperature coefficient and the slope of the characteristic has a second temperature...
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4584868 |
Apparatus for determining the supercompressibility factor of a flowing gas
An arrangement for determining the supercompressibility factor of a flowing gas at elevated pressure includes a first meter for measuring the volume flow rate of the gas at the elevated pressure, a...
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4566317 |
Borehole flow meter
Borehole fluid flow measuring apparatus is disclosed having a body member sized for passage through a wellbore. In a first embodiment of the invention, a thin metallic cross shaped disk is...
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4520677 |
Solids mass flow indication with radiation
Method and apparatus for indicating mass flow of a solid particulate material through a rotary feeder. A radiation source and detector are positioned in a manner whereby radiation flux is directed...
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4448081 |
Method and device for the dynamic and density-independent determination of mass flow
Method for the dynamic and density-independent determination of the mass flow of fluids. A single vortex generating bluff body is placed in the flow to generate vortices according to the principle...
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4414634 |
Fluid flow totalizer
A data totalizer for use with a fluid flow chart recorder is disclosed. The chart recorder may be for a gas well to record the flow of gas into a collection pipe and such chart recorder has a...
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4411161 |
Mass flowmeter or the like
A quartz tuning fork in a chamber adjacent a gas pipeline carrying a turbine flowmeter. The chamber is connected across the flowmeter turbine to receive a gas at a flow rate high enough to cause...
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4404638 |
Flow rate measuring device
A flow rate measuring device comprising a counter for counting pulses from a flow rate detector, a detector for detecting the temperature of a fluid to be measured, a difference detector for...
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4390956 |
Apparatus for correcting measured gas flow
A gas flow volume corrector mounted on a flow meter is provided with a microprocessor which calculates a corrected volume each time the meter measures a unit volume of flowing gas. Customer...
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4377948 |
Differential gas pricing apparatus and method
A method and apparatus for reducing the peak loading requirements of a gas utility allow the use of a unit rate structure which depends upon the ambient outside temperature. The apparatus employs...
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