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7340353 |
Dual function flow measurement apparatus having an array of sensors
A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and...
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7295933 |
Configurable multi-function flow measurement apparatus having an array of sensors
A configurable multi-function flow measurement apparatus is provided that can selectably function to measure the speed of sound propagating through a fluid flowing within a pipe and/or to measure...
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7249525 |
Apparatus for measuring parameters of a fluid in a lined pipe
An apparatus for measuring a parameter of a fluid passing through a pipe comprises a spatial array of pressure sensors disposed at different axial locations along the pipe between a sleeve within...
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7127360 |
Dual function flow measurement apparatus having an array of sensors
A dual function flow measurement apparatus is provided that combines the functionality of an apparatus that measures the speed of sound propagating through a fluid flowing within a pipe, and...
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6817252 |
Piston position measuring device
A measuring device is provided for determining a position of a piston contained within a hydraulic actuator as a function of a hydraulic fluid flow. The measuring device includes a bi-directional...
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6807947 |
Method and device for controlling fuel metering into an internal combustion engine
A device and a method for determining a fuel pressure and/or an injected amount of fuel are described. A fuel injection unit meters the fuel to an internal combustion engine as a function of a...
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6725706 |
Device and method for blowing down and measuring the back pressure of chemical reactor tubes
A device for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at...
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6658946 |
Method of detecting fluid flow through a conduit
A sensor for detecting contact of a fluid delivery probe with a fluid surface and for detecting fluid flow through the probe includes a first electrode disposed along a fluid flow path of the probe...
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6253624 |
Friction flowmeter
A pressure transmitter produces signals indicative of a flow in a pipe. The transmitter has a pressure sensor that is fluidly coupled to two ports in the pipe, and the pipe has a substantially...
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5811674 |
Coolant safety system for welding apparatus
In an automated welding machine, where a flow of liquid coolant is supplied to welding components on the machine from a source of coolant and then returned to the source of coolant, a safety system...
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5755559 |
Apparatus and method for pumping supercritical fluid and measuring flow thereof
In a piston pump for pumping liquid carbon dioxide at a temperature below 30 degrees Fahrenheit and pressures at least as high as 7500 psi, the volume leaving the pump is determined by measuring...
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5753806 |
Apparatus and method for determining the distribution and flow rate characteristics of an injection nozzle
A plurality of piezoelectric sensors are disposed in a spatial array around the ports of an injection nozzle. Separate electrical signals proportional to the instantaneous momentum of fluid...
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5485850 |
Monitor of low pressure intervals with control capabilities
A monitor that provides data obtained from the detection of very low positive, negative, or differential pressures, and can be used to control devices in health care and industry. An example of its...
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5142483 |
Pressure regulating system for positive shut-off pressure controller
A pressure controller rapidly, precisely sets and stabilizes the pressure in a test volume to a target pressure by opening a fast inlet solenoid valve or a fast outlet solenoid valve, and opening a...
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4604902 |
Means and techniques useful in mass flowmeters for multiphase flows
A mixture of two materials flows through a first measuring station which includes a Venturi meter for obtaining and measuring a pressure difference Δp that is representative of mass flow 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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3703893 |
METHOD AND APPARATUS FOR DETERMINING WORK OF BREATHING
A method and apparatus is disclosed for determining work of breathing by using a dynamic flow measuring means, such as venturi tube to obtain an electrical signal proportional to flow squared of...
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3608546 |
FLUIDIC SPIROMETER
An expendable mouthpiece transducer, fluidic circuitry for preventing the breathed air from contaminating the nonexpendable portion of the spirometer, a fluidic integrator, timer and a three-gage...
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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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3535929 |
METHOD AND APPARATUS FOR THE SIMULTANEOUS DETERMINATION OF FLUID FLOW OVER A LONG AND A SHORT TIME INTERVAL
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3407658 |
Flow meter
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3376745 |
Flow meter
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3364739 |
Speed and distance measuring apparatus
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2919578 |
Integration system
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2820939 |
Indicating system
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