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7624632 |
Constant-temperature-difference flow sensor, and integrated flow, temperature, and pressure sensor
An integrated sensor for automated systems includes a flow sensor, a temperature sensor, a pressure sensor, and a network interface. In a particular embodiment of the invention, the flow sensor...
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7624623 |
Instrument and method for detecting leaks in hermetically sealed packaging
An instrument for detecting leaks in a hermetically sealed package. The instrument includes (i) a hollow needle, (ii) a mass flow rate sensor in sealed fluid communication with the lumen defined by...
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7613582 |
Thermal type flow rate measurement apparatus
Thermal type flow rate meters for measuring the flow rate of intake air of an internal combustion engine of a motor vehicle or the like have encountered a problem of an increase in pulsation errors...
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7565255 |
Thermal flow meter and control system
In regard to an output of an intake flow meter for an internal combustion engine, a pulsation error can be reduced and dispersion in correction at the time of correction of response delay (a...
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7533564 |
Micro sample heating apparatus and method of making the same
A micro sample heating apparatus has a substrate, a micro heating device disposed on a first surface of the substrate, a cavity having a vertical sidewall and corresponding to the micro heating...
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7487665 |
Method for monitoring the stay time in a restricted conduit
The disclosure relates to a method of monitoring the stay time in a restricted conduit, such as a holding tube in a heat treatment plant. A first measurement registration x of a chemical or...
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7451537 |
Method for fabricating a microscale anemometer
Method for fabricating a microscale anemometer on a substrate. A sacrificial layer is formed on the substrate, and a metal thin film is patterned to form a sensing element. At least one support for...
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7440852 |
Stochastic analytical solution to quantify the earth's subsurface heat flow
An analytical closed form solution to mean and variance in heat flow is obtained by solving the stochastic heat conduction equation incorporating randomness in the thermal conductivity. The method...
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7434460 |
Sealing structure and a flowmeter using the same
A substrate includes a first surface portion, which covers a heat receiving portion of a radiation member together with a resinous member. The substrate further includes a second surface portion,...
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7430903 |
Fluid flow measurement using optical fibres
A method of monitoring fluid flow uses an optical fiber having a heatable coating. The fiber is disposed within flowing fluid, and the heatable coating heated so that heat is transferred from the...
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7412881 |
Fluid flowrate determination
A method and apparatus are useful for determining the flowrate of fluid flowing within a passage. The method comprises the step of measuring the equilibrium temperature of a location of interest...
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7399118 |
Thermal gas flowmeter comprising a gas quality indicator
The invention relates to a method and a device for measuring a gas consumption by means of a gas meter. A gas meter with thermal mass flow sensor for determining mass flow signals (S M ) and with a...
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7398681 |
Gas sensor based on dynamic thermal conductivity and molecular velocity
An apparatus and method for gas detection. The apparatus comprises a) a sample chamber for holding a gas sample, b) a sealable vacuum port in fluid communication with the sample chamber, for...
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7387022 |
Thermal mass flow transducer including PWM-type heater current driver
A thermal mass flow transducer includes first and second constant current sources, a first temperature sensitive element, a second temperature sensitive element, a heater element, and a control...
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7373838 |
Acoustic wave flow sensor for high-condensation applications
An acoustic wave flow sensor includes a piezoelectric substrate and a heater located immediately below the acoustic wave substrate. A heating element can be deposited in association with a...
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7370518 |
Heating resistor type fluid flow rate measuring apparatus and control apparatus for internal combustion engine having the measuring apparatus
To realize a control apparatus for an internal combustion engine having a heating resistor type air flow rate measuring apparatus which can effectively remove salinity adhered to the heating...
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7308824 |
Thermal dispersion flow meter with chronometric monitor for fluid leak detection
A thermal dispersion flow meter with chronometric monitor for fluid leak detection includes an ambient temperature RTD sensor and a flow rate RTD sensor which are configured to sense the...
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7281423 |
Characteristics adjusting apparatus of physical quantity sensing device and a thermal type air flow measuring instrument, and associated adjusting method
The output characteristics of the sensing device or the control quantity of the sensing element can be adjusted by extracting an adjusting terminal in addition to a power source terminal, a ground...
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7240547 |
Method and apparatus for measuring fluid properties
A method of measuring fluid properties such as flow velocity, flow rate, and fluid composition comprises positioning a heat exchange element with a temperature sensor, such as an optical fiber...
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7234237 |
Method for producing a protective cover for a device
In a method for producing a protective cover for a device formed in a substrate, at first a sacrificial structure is produced on the substrate, wherein the sacrificial structure comprises a first...
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7215021 |
Electronic device
The conductor wire surface for constituting a circuit formed by print or junction on a substrate formed from a composite member of ceramics, resin, and an inorganic member and from a resin member...
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7201049 |
Pulsed thermistor sensor
A thermistor is pulsed with energy, and a time constant of decay of temperature is calculated based on measured resistance of the thermistor over a number of known intervals. The time constant is...
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7162921 |
Measuring device for measuring the volume flow or the substance properties of a gas, whose direction of flow can reverse
A device for measuring the volume flow or other substance properties of a gas, whose direction of flow can reverse. The arrangement contains a specially designed Y-piece, which is used for...
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7082847 |
Sealing device
An apparatus for sealing a wide variety of vessels and for providing access to the interior of such vessels while sealed. In some embodiments, a sealing apparatus includes a base plate, a cover...
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7084778 |
Ammonia flow alarm and method therefor
A sensor system for monitoring cryogenic gas flow through a tube/pipe has at least one sensor coupled to the tube/piping. An alarm circuit is coupled to the sensor for receiving measurement signals...
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7051418 |
Method of measuring weak gas flows
Firstly, a supporting frame is produced, whose opening is spanned by an auxiliary layer flush on one side. Following the production of microstructures, flat parts or membranes on the common plane...
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7049556 |
Heating device
A heating device at least having an electrically insulating film formed on a surface of a substrate, a heating member formed on the electrically insulating film, and a protection film formed over...
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7044714 |
System and method for controlling pumping of non-homogenous fluids
A controller for controlling the pump unit of an oil well includes a sensor having a first and second probe for placement in the flow of oil from the well bore. Each of the probes contains a...
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7036367 |
Flow velocity measurement method and apparatus, including applications thereof for measuring heat flow, and wind velocity and/or direction generation
A method and apparatus for measuring the flow velocity of a flowing fluid includes a positive temperature coefficient thermistor to be immersing within the flowing fluid in order to provide a...
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6938472 |
Static pressure calculation from dynamic pressure for rotary air-data system and methodology therefor
A Rotary Air-data System (RADS) periodically samples pressure data from a main rotor blade mounted pitot-scoop integrated with a high accuracy pressure sensor to compute a velocity vector that is...
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6904799 |
Fluid velocity sensor with heated element kept at a differential temperature above the temperature of a fluid
A system for measuring the velocity of a fluid can comprise a temperature sensor, for measuring the ambient temperature of the fluid, an RTD placed in the flow path of a fluid, the RTD being...
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6857324 |
Method and apparatus for measuring concentrations of components of fluid
A method and an apparatus for measuring the concentrations of the components of a fluid are described, which can be used to measure the concentrations of the components continuously in real time...
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6837614 |
Heat-flux gage, manufacturing method and manufacturing device thereof
A heat-flux gage, a manufacturing method and a manufacturing device thereof which are improved from circular foil heat-flux gage disposed in ASTM E511 comprise: a cylindrical body having a...
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6829930 |
Gas velocity and temperature sensor system
A gas velocity and temperature sensor system comprising a first thermistor driven at a constant temperature and configured to output a flow signal representative of the power dissipated as a...
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6810859 |
Control system of internal combustion engine with output correcting means of thermal type air flow sensor
Disclosed here is a control unit employed for an internal combustion engine and provided with air flow sensor output correcting element capable of correcting a detected voltage error to occur in...
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6802217 |
Flowmeter for compressed-air distribution systems
A flowmeter which clamps around and seals to a pipe with probes projecting into the pipe through holes in the pipe, the useful separation of the probes being achieved by their entering the pipe...
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6763710 |
Method and device for measuring the flow of a fluid
To measure the flow in a liquid, the liquid ( 1 ) is led in a duct ( 2 ) along a flow sensor ( 3 ). The flow sensor ( 3 ) is integrated together with a processing and control circuit on a...
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6681643 |
Method and apparatus for determining a zero gas flow state in a bidirectional gas flow conduit
A method and apparatus for determining a state of zero gas flow in a conduit. A first gas flow signal has one polarity when gas flow is in one direction in the conduit and the opposite polarity...
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6647809 |
Silicon carbide high temperature anemometer and method for assembling the same
A high temperature anemometer includes a pair of substrates. One of the substrates has a plurality of electrodes on a facing surface, while the other of the substrates has a sensor cavity on a...
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6640626 |
Method and system for identifying a type of gas
A method and a system are disclosed for identifying a gas type. The system includes a first sensor in contact with the gas and which produces a first electrical output signal indicative of a first...
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6626037 |
Thermal flow sensor having improved sensing range
A flow sensor, which can detect flow velocity in a wide range including high flow velocity area with simple structure. A flow sensor includes a substrate having a hollow portion; and a thin film...
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6625566 |
Pressure drop calculation method and system taking account of thermal effects
The present invention relates to a method of calculating the pressure drops created by a given fluid in a circuit having a determined thermal profile. The method includes making up a database (BD)...
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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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6571622 |
Combined respiratory flow sensor
A compact, one-part respiratory flow sensor with a small dead space volume for the simultaneous measurement of both the gas volume flow and the concentration of gas components of the respiratory...
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6568263 |
Liquid level detector and system
A system for detecting the level of fluid in a fluid containing vessel. The system includes a device for applying energy to a selected location on the vessel. A sensor in proximity to the location...
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6536273 |
Thermal flow-rate sensor and method for determining the flow rate of a fluid
A thermal flow-rate sensor has a flow sensor ( 3 ) and a thermal-conductivity measuring cell ( 4 ). The flow sensor ( 3 ) comprises a first heating device and a first temperature detector, which...
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6509553 |
Method and apparatus for providing an indication of the composition of a fluid particularly useful in heat pumps and vaporizers
A method and apparatus for providing an indication of the composition of an examined fluid by using an electrical resistor, particularly a positive temperature coefficient thermistor, for measuring...
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6435207 |
Flow regulation fitting
A flow regulation control valve for regulating volume flows in pipelines including valve housing with a flow chamber, a control or shut-off member arranged in the flow chamber for setting a desired...
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6397673 |
Air flow measuring apparatus
An air flow measuring apparatus, is of a type converting digital values Vadc having a non-linearity characteristic to a flow rate in air flow rate conversion processing. The apparatus, is provided...
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6240777 |
Sensor having a membrane
A sensor has a membrane, on which at least one resistor element is situated. The membrane has a membrane layer which is composed of a plurality of partial layers. In addition, a covering layer is...
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