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6871533 |
Flowmeter with element for reducing the formation of turbulence in the flowing medium
Devices for determining at least one parameter of a flowing medium having an inner pipe according to the related art have the disadvantage that whirls are formed, which causes increased signal...
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6868722 |
Air flow rate measuring apparatus
A diversion passage is constructed into an inverted U shape in which an upstream diversion passage and a downstream diversion passage each having a passage direction in a direction of projection of...
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6854326 |
Measurement apparatus for measuring physical quantity such as fluid flow
Resin members, on the surfaces of which metal films are formed, are used for; an auxiliary air passage provided in a main air passage, in which a sensor element of a physical quantity sensor such...
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6851311 |
Thermal-type flow meter with bypass passage
A flow measurement sensor accurately outputs signals even when pulsation flow is generated at high engine speed and also when pulsation flow accompanying reverse flow is generated. The flow...
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6843122 |
Mass flow controller for control purge and managing method of the same
The present invention relates to a mass flow controller for a control purge and a managing method of the same. When a user sets the mode to a control purge mode capable of controlling a maximum...
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6826953 |
Flow sensor
An apparatus and method for measuring flow. A flow sensor includes a sensor conduit and a bypass having at least one capillary tube. At least one of the length, inside diameter, and cross-sectional...
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6826955 |
Mass fluid flow sensor having an improved housing design
A mass fluid flow sensor for determining the amount of fluid inducted into an internal combustion engine, for example, is disclosed. The mass fluid flow sensor includes an external intake fluid...
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6820479 |
Device for determining at least one parameter of a flowing medium
A device includes a sensor carrier, on which is arranged a sensor element introduced into the flowing medium. The sensor carrier is produced separately, and the at least one sensor element may be...
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6810730 |
Device for measuring air flow, comprising a device for separating foreign particles
A device including a bypass channel including a separating wall, which protects a measuring element, or, through a special arrangement of an inner wall surface, prevents foreign particles from...
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6782743 |
Flow metering method and flowmeter
A flow metering method and a flowmeter capable of providing an electric output corresponding to the metered flow rate of metered fluid by an electric circuit including a thermal type flow sensor...
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6779394 |
Apparatus and method for thermal management of a mass flow controller
A thermal mass flow controller includes a sensor assembly, a valve assembly, and mass flow controller housing. A thermal ground limits the conductive thermal path between the mass flow controller...
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6779393 |
Device for measuring the mass of a flowing medium in an intake tube
A device for measuring the mass of a flowing medium with a temperature-dependent measurement element has a measurement conduit whose faces, which extend perpendicular to a surface fixed by the...
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6776036 |
Fluid flow meter
A mass fluid flow sensor for determining the amount of fluid inducted into an internal combustion engine, for example, is disclosed. The mass fluid flow sensor includes an external intake fluid...
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6729182 |
Flow rate sensor, having a protective member and standard member
In a flow rate sensor, a sensing passage, into which a fluid is introduced and in which a flow rate sensing element is disposed, a support member for supporting the sensing passage, and a circuit...
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6725166 |
Flow pickup circuit
A flow pickup circuit for receiving a flow signal from a flow sensor and providing a flow indicator signal corresponding to flow characteristics through the flow sensor includes an inner bridge...
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6708561 |
Fluid flow meter having an improved sampling channel
A mass fluid flow sensor for determining the amount of fluid inducted into an internal combustion engine, for example, is disclosed. The mass fluid flow sensor includes an external intake fluid...
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6705159 |
Protective device for a mass flow sensor disposed in an air intake channel
Known devices for measuring the mass of a flowing medium can be impaired in their measurement precision by fluid components carried along in the medium. The device according to the invention has a...
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6689179 |
Device for determining at least one parameter of a flowing medium
Devices for measuring at least one parameter of a medium flowing in a line, having an inlet conduit an outlet conduit, having the disadvantage in the prior art that liquids flowing into the inlet...
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6684692 |
Device for measuring at least one parameter of a medium flowing in a line
A device for measuring at least one parameter of a medium flowing in a line, in particular the intake air mass of an internal combustion engine in which fluid particles and solid particles in the...
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6682381 |
Analysis of mercury in fluorescent lamps by cold spotting
A method of analyzing a first gas in a lamp, including: cooling at least a first portion of a lamp below the condensation temperature of the first gas contained in the lamp while operating the...
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6668642 |
Apparatus and method for thermal isolation of thermal mass flow sensor
A thermal mass flow controller includes a sensor assembly and mass flow controller housing. A thermal ground limits the conductive thermal path between the mass flow controller housing and the...
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6668641 |
Apparatus and method for thermal dissipation in a thermal mass flow sensor
A thermal mass flow controller includes a sensor assembly, a valve assembly, and a mass flow controller housing. A thermally conductive element conducts heat from the valve assembly away from the...
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6655207 |
Flow rate module and integrated flow restrictor
An integrated module is provided for measuring a flow rate of a fluid, whether gaseous or liquid, with a flow restrictor comprising a plurality of orifices adapted to a flow channel of the...
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6647776 |
Split-flow flowmeter with a profusion facing the detection element
A split-flow-type flowmeter includes a detection element 2 disposed to face a flow path thereof and a venturi structure 4 formed within a flow path 1 in the vicinity of the detection element ...
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6647775 |
Device for measuring at least one parameter of a flowing medium
In devices for measuring the mass of aspirated air of an internal combustion engine, for instance, via a line, it is already known to provide a tubular body inside this line and to provide a...
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6645274 |
Device for determining at least one parameter of a flowing gas-liquid mixture or using a flow rectifier as a condensation trap or method for condensing a liquid
A device and method for determining at least one parameter of a flowing gas-liquid mixture, including parameters of the intake air of internal combustion engines, uses a condensation trap to...
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6622556 |
Total temperature probe with complimentary sensor cavity
A total temperature probe with a complimentary sensor cavity for measuring multiple properties of a fluid flowing rapidly through the probe. The probe includes a sensor housing for diverting a...
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6619142 |
Integrated fluid sensing device
A circuit board, which includes one or more sensors, is integrated in a fluid control device, such as a valve manifold and a base plate. The fluid control device selectively directs a fluid used to...
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6619140 |
Fluid flow meter having thermal flow sensor disposed in one of a plurality of fluid passages
A separator partitions an upstream side air passage of a bypass passage into first and second sub passages. A thermal flow sensor is attached to the separator facing the first sub passage. A convex...
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6595049 |
Thermal mass flow sensor with improved sensitivity and response time
A thermal mass flow sensor having superior sensitivity and response time includes a flow sensor tube defining an interior channel for fluid flow between input and output ends, a heating element in...
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6571621 |
Thermal flow rate measuring device
A thermal type flow rate measuring device can certainly prevent adhesion of water droplet onto a sensor element and thus achieve high reliability. The thermal type flow rate measuring device...
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6561021 |
Flow rate-measuring device
A flow rate-measuring device capable of measuring accurately a flow rate of fluid to be measured containing a drift or eddy as compared with a conventional device is provided. A flow rate-measuring...
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6557410 |
Flow rate sensor with a temperature sensing structure spaced from the support member
In a flow rate sensor, a sensing passage, into which a fluid is introduced and in which a flow rate sensing element is disposed, a support member for supporting the sensing passage, and a circuit...
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6557408 |
Device for measuring the mass of a flowing medium
The match with a measurement characteristic curve of a device for air flow measurement is disturbed by pulsations, soiling and poor flow behavior. An improvement in the measuring performance of the...
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6446504 |
Constant temperature gradient differential thermal mass flow sensor
A thermal mass flow sensor in which heat transfer to and from a fluid flowing through a sensor conduit is optimized by establishing a symmetrical triangular temperature distribution along a heated...
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6422070 |
Device for measuring the mass of a flowing medium
Devices for measuring the mass of a flowing medium using a temperature-sensitive measuring element have the disadvantage that considerable measuring errors may occur in the event of a pulsating...
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6401531 |
Air flow meter having flow rectifier with lattice in fixed configuration
A device for measuring the mass of a flowing medium has a measuring element disposed in a measurement fitting. A flow rectifier that is provided upstream of the measuring element has flow openings...
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6354150 |
Sensor for a capillary tube of a mass flow meter
The sensor ( 7 ) for a mass flow meter ( 1 ) including a capillary tube ( 6 ) for circulation of fluid in parallel with the principal circuit of the fluid circulation. The sensor includes heating...
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6345531 |
Measuring device for measuring the mass of a flowing medium
A measuring device serves to measure the mass of a medium flowing in a line along the primary flow direction, in particular the mass of aspirated air of an internal combustion engine. The measuring...
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6336361 |
Flow rate sensor with symmetrical support protective member and structural member
In a flow rate sensor, a sensing passage, into which a fluid is introduced and in which a flow rate sensing element is disposed, a support member for supporting the sensing passage, and a circuit...
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6332356 |
Measuring device for measuring the mass of a medium flowing in a line
A measuring device for measuring the mass of a medium flowing in a flow line, in particular the aspirated air mass of an internal combustion engine, including a measuring element bathed by the...
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6298720 |
Measurement device for measuring the mass of a medium flowing in a line
A measurement device for measuring the mass of a medium flowing in a line along a line longitudinal axis, in particular the intake air mass of an internal combustion engine. The measuring device...
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6272920 |
Device for measuring the mass of a flowing medium
A device for measuring the mass of a medium flowing in a line, especially the aspirated air mass on an internal combustion engine, comprising a flow tube, which is disposed in the line. A measuring...
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6253606 |
Thermosensitive flow rate sensor
A highly accurate thermosensitive flow rate sensor is able to reduce the detection error of a flow rate even in the case of a flow accompanied by considerable intake air pulsation in an automotive...
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6240371 |
Pedestal-mounted sensor
A sensor comprising a substantially planer base having a substantially-flat bottom surface to facilitate adhesive mounting, and at least one transducer mounted to said base.
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6208254 |
Thermal dispersion mass flow rate and liquid level switch/transmitter
A thermal dispersion switch/transmitter for determining flow rate and liquid level in a non-contacting apparatus. A special preparation of one or more small spots in the outside surface of the wall...
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6148663 |
Device for measuring the amount of a flowing medium
A device for measuring the mass of a flowing medium, with a temperature-dependent measurement element that substantially reduces measurement errors due to a pulsating flow that is characterized by...
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6044701 |
Thermal mass flow controller having orthogonal thermal mass flow sensor
A thermal mass flow controller having a thermal mass flow meter with an orthogonal thermal mass flow sensor includes a base defining a primary fluid flow path therein for carrying a flow of fluid...
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6035711 |
Device for determining the direction and speed of an air flow
The invention provides a device for determining the direction and speed of an air flow, comprising a chip which is provided with two mutually perpendicularly positioned pairs of measuring circuits...
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6023969 |
Flow modulated mass flow sensor
A sensor for measuring the flow rate of a fluid through a conduit. The fluid flow rate in the vicinity of a heated temperature sensor is made to cyclically vary from a minimum to a maximum to...
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