Matches 151 - 200 out of 230 < 1 2 3 4 5 >
Match Document Document Title
5086655 Orifice measuring device  
The invention relates to a plate orifice for a or in a measuring device for he flow metering of fluid streams, in particular gas streams, preferably for gas streams present in internal combustion...
5022270 Extended measurement capability transmitter having shared overpressure protection means  
A transmitter measures pressures and has a pressure sensor and an additional pressure sensor providing additional measurement capability to the transmitter, such as an extended measurement range or...
5005428 Inverted weir for conduit  
A method and apparatus for installing a weir to divert fluid flowing in a conduit and to convert potential fluid energy to kinetic energy.
4961349 Flow meter  
Fluid flow measurement apparatus. The apparatus reduces the normal cross sectional area of a portion of the conduit and produces laminar fluid flow through the portion of the conduit having a...
4961344 Multiple tube flowmeter  
A gas flow measuring appartaus especially useful in a spirometer produces increased gas flow sensitivity and accurate gas flow rate measurements, especially at low gas flow rates. The apparatus...
4930343 Apparatus for measuring and controlling fluid flow across a boundary  
An apparatus for use in measuring fluid flow across a boundary is disclosed including a conduit, supply means for control fluid and two fluid flow sensors. The conduit is positioned to extend...
4905709 Disposable tubular pneumotachometer  
A disposable tubular pneumotachometer in which the air-resistive material covering over the air outlet is a fabric with multiple sub-miniature tubular apertures to provide capillary air flow and,...
4896541 Vortex generating mass flowmeter  
One or more rods are employed in the flow passage of the above-described flowmeter as the drag-producing bluff body. Conveniently, the rods can also serve as probes for sensing the pressure in the...
4884460 Device for sensing air flow  
A venturi device is provided for sensing air flow. The device includes a body having first and second substantially cylindrical end portions interconnected by a wasp-waisted intermediate portion....
4884459 Flow rate converter  
A flow rate converter has a body with a cyclindric tube and an inlet and an outlet diffuser. The tube and body have inner annular conduits connecting with pipe connections disposed in the body. The...
4848163 Extended range linear flow transducer  
An extended range linear flow transduced with simple construction and compact size. The combination of a divergent air flow section and a linear restrictor a short distance from a flow...
4842806 Device for measuring recirculating flow rate in a nuclear reactor  
The recirculating flow rate of the primary coolant recirculated a nuclear reactor pressure vessel by an internal pump disposed therein is measured by a device which comprises a flow passage...
4781536 Low-flow pump-off control  
A low-flow pump-off control device for deactivating a motor for a pump during conditions when a rate of supply of a source of fluid to be pumped by the pump is insufficient includes: a pipe section...
4719806 Fluid flow rate monitor probe  
The probe is of the withdrawable type and consists of an elongated cylindrical body made up of a tube 10 joined to an upper T-connector and to a lower tip portion 18. The tip portion 18 is of...
4662219 Methods for metering two-phase flow  
A method for metering two-phase flow wherein the successive accelerational pressure drops across two orifice plates installed in series with correlated to obtain one or more flowrate parameters.
4653288 Apparatus for measuring refrigerant flow rate in refrigeration cycle  
A refrigerant flow rate measuring apparatus has a means for detecting the opening degree A of an expansion valve of a refrigeration cycle, a pressure detecting means for detecting the refrigerant...
4644958 Inhalation therapy apparatus adapter  
A throw-away plastic mouthpiece of low cost and producing a pressure differential upon inhalation is substituted for the rotary turbine and electronics mouthpiece of a known Spirocare respiratory...
4641535 Flowmeter  
A method and apparatus for measuring flow parameters of an unknown fluid uses four pressure sensors at fixed, spaced locations within a cylindrical member having a constricted and a full diameter...
4638672 Fluid flowmeter  
A fluid flowmeter is disclosed herein which includes a fluid displacement member positioned in the fluid flow to substantially linearize the velocity profile associated therewith. In one form of...
4613325 Flow rate sensing device  
A flow rate sensing device, particularly for use in regulating the rate of flow in a system for parenteral administration of liquids to patients. The liquid emerges from a storage reservoir and is...
4599906 Remote probe differential pressure transducer  
A differential pressure transducer assembly for measuring flow in dirty and solids bearing fluids utilizes small barrier diaphragms located at the pressure taps of a flow measuring restriction. The...
4581944 Electronic flow transducer assembly  
A flow rate sensor including a diaphragm having a first side in fluid communication with a Venturi and a flow conduit. With flow through the conduit, the diaphragm travels downwardly, the extent of...
4581945 Pressure to voltage converter for measuring gas glow rates  
A converter has a pressure to voltage transducer connected to an amplifier. A laminar gas flow element (L.F.E.) may be connected to the transducer and the converter output voltage is a measure of...
4559275 Perforated plate for evening out the velocity distribution  
In a perforated plate (1) for evening out the velocity distribution in a flow channel, the passage holes (2) are designed as shock diffusers arranged in parallel. For this purpose, they are...
4517847 Flowmeter having uniform response under both laminar and turbulent flow conditions  
A target flowmeter includes a target body with an aperture through its impact surface, to equalize the forces generated on the target under both laminar and turbulent fluid flow conditions, as well...
4480947 Powder flow rate measuring apparatus  
A novel powder flow rate measuring apparatus having a simple structure is described herein, in which a conveying fluid is injected through a nozzle into an inlet of a single detecting pipe line...
4476707 Gas flow measurement with detented chopper valve  
A gas flow measuring system employs an oscillating chopper valve alternately to deliver a flow head-generated pressure and a reference pressure to a pressure transducer. The chopper valve is driven...
4446523 Mass air flow meter  
A mass air flow meter for an internal combustion engine is described in which the mass air flow into the engine is determined by the measured throttle angular position, the sensed pressure above...
4426878 Viscosimeter  
A viscosimeter having a first cell containing mercury or other electrically conductive fluid, a second cell containing a sample of fluid of unknown viscosity, and a pair of passages interconnecting...
4418723 Flow restrictor  
Improvements in a flow restrictor for use in a flowmeter measuring a flow rate according to the pressure drop caused by laminar flow, utilizing the fact that the pressure drop is proportional to...
4413530 Device for measuring and monitoring gas flowrates  
An apparatus for measuring the fluid flowrate through a system whose through flowrate is to be measured, which includes a first chamber in fluid communication and substantial pressure equilibrium...
4406161 Measurement of air mass flow into an internal combustion engine  
An air mass flow measuring system for measuring flow into an internal combustion engine comprises a throttle angle transducer and further transducers measuring ambient air temperature and pressure...
4403514 Pneumotachograph with pitot-like tubes  
A pneumotachograph including a housing having first and second ports which, during the course of respiration, alternate as input and output ports and which provide a path for generally linear flow...
4381668 Gas flow measuring apparatus  
An intake barrel connected to an intake pipe of an internal combustion engine is provided therein with a venturi member. Openings are formed in the wall of the intake barrel at the upstream and...
4377090 Through-flow monitor for liquid or gaseous media  
A through-flow monitor of the type which produces a switching signal as soon as the rate of flow through a duct reaches a particular level consists of a generally tubular housing 1 which can be...
4308748 Adaptive automatic wall wind tunnel  
An apparatus is disclosed for achieving interference-free fluid velocity distributions in the plane of the walls of a subsonic wind tunnel. Adjustable slats having longitudinal baffles therebetween...
4290314 Target flowmeter  
A flowmeter comprising a disc-like target member mounted in a flow conduit and which forms an obstruction to flow. The meter includes means to measure the differential in pressure on opposite faces...
4240294 Flow meter  
A flow meter for the registration of pulsating liquid flows, and preferably for registration of small blood flows. The flow is measured by means of a differential pressure measurement over a first...
4212200 Instantaneous flow meter for automobile vehicles  
A flow meter, particularly applicable to the instantaneous measurement of an automobile vehicle's fuel consumption, includes an enclosure separated into two chambers by a flexible membrane which...
4161119 Pneumatic flow measuring system  
The present invention relates to a pneumatic flow measuring system for measuring fluid flow. More particularly, the disclosed preferred embodiment of the present invention is referred to as a...
4118973 Apparatus for measuring the flow rate and/or viscosity of a fluid  
An apparatus for measuring the flow rate and/or viscous characteristics of a fluid comprises a casing, having a fluid passage which is elongated in cross-section with two parallel, opposed sides...
4100798 Flow meter with piezo-ceramic resistance element  
A flow meter particularly for receiving respiratory flows for pulmonary function diagnoses has a perforated piezo-ceramic flow resistance element and transducer in a flow tube for providing a...
4096746 Flow controller-flow sensor assembly for gas chromatographs and the like  
There is disclosed a flow controller-flow sensor combination especiably suited for gas chromatograph applications wherein a transducer monitors the pressure at the inlet and outlet of a flow...
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...
4047521 Rate-of-flow meter, particularly for diagnostic spirometry  
A rate-of-flow meter, particularly for diagnostic spirometry, comprises a flow tube containing, on diametrically opposite sides, a measuring stud provided with pressure taps and a displacement body...
4015473 Mass flowmeter for a gaseous medium, for example air  
A mass flowmeter for gas wherein the absolute pressure at and the pressure differential across a laminar restriction are measured with diaphragms and multiplied, each diaphragm having at least one...
4008611 Fluid flow measuring apparatus  
Apparatus for producing a pressure differential for measuring flow of a gaseous fluid through a conduit of circular cross-section, including a pair of hollow tubes which pass through the wall of...
3952577 Apparatus for measuring the flow rate and/or viscous characteristics of fluids  
An apparatus for measuring the flow rate and/or viscous characteristics of a fluid comprising a casing having a fluid passage, a fluid inlet cavity and a fluid outlet cavity, fluid pressure...
3840051 STRAIGHTENER  
A perforated-plate type straightener adapted to be fitted in a cylindrical pipe across the passage of a fluid flowing through the pipe, comprising a perforated plate having a plurality of round...
3838598 CAPILLARY FLOW METER  
This disclosure describes a new type of flow meter. A housing defines a passage wherein fluid flows through a plurality of capillaries. The flow in these capillaries is laminar even if the fluid in...
Matches 151 - 200 out of 230 < 1 2 3 4 5 >