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4250747 |
Heat meters
A heat meter comprises a transducer (6) for measuring the rate of flow of water through a conduit (58) and a transducer (10) for measuring the temperature difference between two spaced locations...
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4238965 |
Two wire flow rate transmitter
The disclosed transmitter operates in a two wire process control system to modify a loop current through the two wires that are representative of pressure drop through an orifice into a second loop...
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4238825 |
Equivalent standard volume correction systems for gas meters
A self-contained correction unit operable in conjunction with a gas meter measuring an actual gas volume emits a digital output signal correlated to an equivalent standard gas volume therefor by...
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4149254 |
Method and apparatus for flow metering
A method and apparatus are disclosed for calculating gas flow through an orifice using the complete American Gas Association gas flow equation, for selecting specific values to be used in said...
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4120295 |
Apparatus for integration of fluid dilution curves
A method for obtaining integral data of the dilution curve obtained when an indicator is injected into a closed system containing a circulating fluid, and as particularly adapted for utilization in...
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4120033 |
Apparatus and method for determining pumping system head curves
There is disclosed apparatus and method for determining pumping head requirements for an operating pumping system by subtracting a desired delivery head or pressure from an actual head. The...
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4074573 |
Method and apparatus for the measurement of volumetric flowrate in pipes and ducts
The volumetric flowrate in ducts and pipes can be determined from only two pressure signals before and at a throttle point, it being immaterial to what extent the pipe or duct is filled or whether...
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4059744 |
Net oil computer or the like
A net oil computer including a differential pressure unit and a turbine or positive displacement flowmeter. The flowmeter produces output pulses at a frequency directly proportional to the rate of...
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RE29383 |
Digital fluid flow rate measurement or control system
A plurality of individually actuatable, value weighted digital bistable valve elements in parallel interconnect a fluid source to a fluid receiver. A linear relationship is preferably maintained...
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4043195 |
Digital thermodynamic flow-meter
An apparatus is disclosed for measuring instantaneous rate of flow and total flow of a fluid. The data are obtained by measuring the quantity of energy necessary to replace an equivalent amount of...
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4028689 |
Calorimetric flow monitor
A calorimetric flow monitor comprising a measuring head adapted to be connectable to a pipe carrying a flow medium. The measuring head includes two thermistors, one of which is surrounded by a...
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4006349 |
Monitoring apparatus for a pneumatic conveyor system
A monitoring system measures the flow of solids in a pneumatic conveying system having a conduit with an air inlet, a solids inlet, and a mixture outlet. A pressure transducer responds to pressure...
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3934462 |
Automatic computing ocular tonometer system
A transducer, placed on an eye being tested, generates an analog signal representative of pressure. The analog signal is periodically converted to digital signals in binary coded decimal...
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3934471 |
Flow monitoring system
The invention provides a novel form of mechanism for monitoring the rate of passage of a material dispersed in a fluid stream, which mechanism may be of use in the control of a plant for recovering...
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3929017 |
Flow monitor and sample control device
A portable device and method for monitoring the flow of liquids and automatically controlling the periodic taking of samples of such liquids, said device utilizing weirs of such as Parshall flumes...
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3911256 |
Apparatus for testing and analyzing fluid mixture
An apparatus for testing a fluid mixture of gas and two liquids of different, known, specific gravity to determine the proportion of each of the ingredients comprising fluid handling means operable...
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3863054 |
ELECTRONIC COMPUTER FOR A SYSTEM OF FUEL INJECTION FOR COMBUSTION ENGINES
An electronic computer for a fuel injection system in which signals representative of the quantity of fuel to be injected are produced which are repectively related to a full load operating curve...
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3854039 |
CURRENT TRANSMITTER CIRCUITRY TO PROVIDE AN OUTPUT VARYING AS THE SQUARE ROOT OF A MEASURED VARIABLE CONDITION
A transmitter used in a variable parameter process which provides a current signal varying as the square root of the measured variable and is also particularly applicable to such transmitters of...
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3835839 |
IMPEDANCE PLETHYSMOGRAPH AND FLOW RATE COMPUTER ADJUNCT AND METHOD FOR USE THEREWITH
A computer adjunct for use with an impedance plethysmograph which provides signals related to impedance in a biological segment. Circuit means are included for converting the pulsatile...
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3739636 |
LINEAR READOUT FLOWMETER
A flow meter for determing the rate of flow of fluid through a conduit and indicating the flow rate on a linear scale. A signal having a magnitude inversely proportional to the time elapsed for a...
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3673392 |
REMOTE TERMINAL COMPUTING UNIT TO COMPUTE B/A × C VALUES, FOR USE BY CENTRAL COMPUTER
A computing unit adapted for use in a computing system, but located proximate the parameter measurement location, comprises converter means that includes a digital to analog converter (and may also...
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3635082 |
APPARATUS FOR MEASURING MASS FLOW OF FLUIDBORNE SOLIDS
Finely divided particles in a fluid stream transported in a conduit comprise the dielectric of two spaced-apart capacitors at electrically insulated inserts in the conduit. Circuitry determines the...
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3593576 |
APPARATUS FOR THE MEASUREMENT OF FLUCTUATING FLUID FLOW
Apparatus for the measurement of fluctuating fluid flow includes a transducer developing an electric signal related to the pressure difference between opposite sides of a barrier in the path of the...
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3539792 |
SQUARE ROOT EXTRACTING SYSTEMS FOR INDICATING,RECORDING,INTEGRATING,CONTROLLING AND THE LIKE
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3532869 |
MULTIPLIER INCLUDING TWO RESISTANCE BRIDGES
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3440411 |
GAS WEIGHT FLOW COMPUTER FOR PROVIDING THE RATIO OF TWO PRESSURES
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3407658 |
Flow meter
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3333468 |
Mass flow measuring system
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3278728 |
Gas weight flow computer
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3248654 |
Temperature compensated computer
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3099742 |
Digital flow computer employing a logarithmic mode of computation
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3096434 |
Multiple integration flow computer
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3070302 |
Flow computer
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2949037 |
Instrument in which displacement of an element is directly proportional to the square root of a force applied to the element
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3555901 |
Title is not available
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