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| Number | Title | Issue Date |
| 8302471 | Calorimetric flow meter having high heat conductivity strips A flow meter includes a heater for heating a fluid flow along a membrane. A temperature difference is measured between and upstream point and a downstream point. There are additionally provided one or more strips of material having a relatively high heat conductivit... | 11/06/2012 |
| 8166813 | Temperature sensor and method for its manufacture A thermal, flow measuring device for determining and/or monitoring flow of a measured medium through a measuring tube. The thermal, flow measuring device includes: a first pin-shaped shell and at least a second pin-shaped shell; a first resistance thermometer and at... | 05/01/2012 |
| 8015870 | Flowmeter for measuring a flow rate using a heat exchange principle Provided is a flowmeter with a flow tube through which fluid flows; a cooling apparatus adapted to cool a part of the flow tube; a first temperature detecting section for detecting the temperature of the flow tube cooled by the cooling apparatus; a second temperatur... | 09/13/2011 |
| 7987709 | Device and method for measuring the flow speed and direction of a gaseous fluid A device for measuring the flow speed of a fluid as well as its direction and its orientation, based on a thermal-sensor measurement principle, that comprises at least three flow measurement probes each having a sensitive member and an obstacle masking a predetermin... | 08/02/2011 |
| 7980125 | Sensor system for determining a parameter of a fluid medium A sensor system for determining at least one parameter of a fluid medium flowing in a main flow direction has at least one sensor situated in the fluid medium, for determining the parameter of the fluid medium, and at least one grating situated transversely to the m... | 07/19/2011 |
| 7735364 | Thermal mass flow meter and method for its operation A thermal mass flow meter is disclosed for determining a material flow through a vessel. In this case, a sensor arrangement is mounted on a holder immersed into a vessel with a flowing medium. It is proposed that the sensor arrangement comprises a first and a second... | 06/15/2010 |
| 7730777 | Flowmeter and flow control device A simply structured flowmeter in which an influence of a dilatational wave on a thermal flow rate sensor is suppressed, and measurement accuracy is enhanced. The flowmeter has not only the thermal flow rate sensor that is placed to face a flow channel and det... | 06/08/2010 |
| 7650783 | Thermal mass flow meter The disclosure relates to a thermal mass flow meter for determining a material flow through a vessel. In this case, a heating element is mounted on a holder which is immersed into a vessel with a flowing medium. It is suggested that the holder is subdivided into two... | 01/26/2010 |
| 7644612 | Thermal mass flow meter and method for its operation The disclosure relates to a thermal mass flow meter for determining a material flow through a vessel. The mass flow meter has at least two measuring elements immersed into a vessel with a flowing medium, with one of the measuring elements being heated. It is propose... | 01/12/2010 |
| 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 includes a temperature sensor (26) which determines the temperatu... | 12/01/2009 |
| 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 has a wide range of applications in quantifying the thermal state of ... | 10/21/2008 |
| 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, which is on the outer periphery of the first surface portion. The subs... | 10/14/2008 |
| 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 coating to the fluid. Optical measurements of the temperature of the h... | 10/07/2008 |
| 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 within or proximate to the passage within which fluid flows. The temper... | 08/19/2008 |
| 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 evacuating the sample chamber, c) a sealable inlet port in fluid communicat... | 07/15/2008 |
| 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 (SM) and with a calibration as energy meter for outputting energy value sig... | 07/15/2008 |
| 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 circuit. The control circuit is coupled to the heater element and is fur... | 06/17/2008 |
| 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 plurality of acoustic wave components upon the acoustic wave substrate. The a... | 05/20/2008 |
| 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 resistor. Salt adheres not only to the heating portion of a heating resisto... | 05/13/2008 |
| 7363182 | System and method for mass flow detection device calibration Systems and methods for correcting measurements of fluid flow using device-specific information to compensate for differences between individual devices of the same design. In one embodiment, a method includes providing device-specific calibration data; sensing a fl... | 04/22/2008 |
| 7351592 | Microfluidic device and method with trapping of sample in cavities having lids that can be opened or closed Method and arrangement (10, 20) for preparing samples (15, 27) submergible in a liquid medium. The arrangement includes a carrier structure (11). The carrier includes a device (13, 23) for controllable generation of a magnetic field throu... | 04/01/2008 |
| 7333899 | Fluid flow rate sensor and method of operation A thermo-anemometer-type fluid flow rate sensor design and a method for its operation that overcome the response time limitations of prior known fluid flow rate sensors is disclosed. The fluid flow rate sensor includes a probe having a detection module adapted to ch... | 02/19/2008 |
| 7327068 | Sensors and related devices and methods Sensors that include SAW devices, related methods, and related devices. Many embodiments are included. Some of the present sensors include an inlet structure; a mounting structure that is spaced apart from the inlet structure, the mounting structure having a top sur... | 02/05/2008 |
| 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 temperature of a fluid in a conduit, and then monitor the flow of that fluid th... | 12/18/2007 |
| 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 terminal, an output terminal and the like outside a housing containin... | 10/16/2007 |
| 7278308 | Thermal isolation between heating and sensing for flow sensors A flow sensor system includes a plurality of flow sensor chips, wherein each flow sensor chip among the plurality of flow sensor chips comprises a substrate, a heater element, a heater control circuit, and flow sensor component formed on the substrate, wherein the h... | 10/09/2007 |
| 7261762 | Technique for detecting and predicting air filter condition A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and ... | 08/28/2007 |
| 7249503 | Tube and die interface for liquid flow sensing through the tube A thermal sensor includes a die having a surface formed to accept the outer surface of tubing; a molded plastic part located on the die surface, said molded plastic part including flexible portions having a surface adapted to engage the bottom half of the circumfere... | 07/31/2007 |
| 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 temperature sensor, arranged centrally inside the element in thermal cont... | 07/10/2007 |
| 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 portion covering a first area of the substrate including the device an... | 06/26/2007 |
| 7213455 | Thermal type gas flow measuring instrument A thermal type gas flow measuring instrument measures gas flow with high precision by accurately correcting changes in radiation heat characteristics of a heating resistor due to contamination. The instrument comprises a second heating resistor 30 whose resis... | 05/08/2007 |
| 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 is coated with glass, resin, solder, or silver paste, thus the corrosi... | 05/08/2007 |
| 7206728 | Method for evaluating thermal comfort of a structure and an assisting method, program or system for designing a structure in consideration of thermal comfort A step of preparing data of (1) material properties of a first part and so on and data of (2) an amount of solar radiation passing through the translucent member to reach a measuring device having a shape imitating a human body part, an amount of solar radiation to ... | 04/17/2007 |
| 7201154 | Flow sensor for purge valve diagnostic An apparatus and a method for managing fuel vapor pressure in a fuel system that supplies fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure... | 04/10/2007 |
| 7201033 | Flowmeter in-situ calibration verification system A calibration system includes a tube or other conduit, a gas source, and a computational device. The tube has an end positioned relative to a flow sensor, and is in communication with the gas source. The tube and gas source introduce calibration gas into the tube at... | 04/10/2007 |
| 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 representative of the mass air flow. The ambient air temperature may b... | 04/10/2007 |
| 7191645 | Dynamic mixed gas flowmeter A compensated flowmeter having a probe adapted to project into flowing media within a conduit. The probe includes a thermal dispersion sensor, and a compensating gas properties sensor contained within a no-flow chamber of the probe. The thermal flow sensor has activ... | 03/20/2007 |
| 7177770 | Mass air flow metering device and method An airflow metering device, including a conventional airflow sensing device signally connected to a signal processor is shown, having an input flow signal correlatable to a magnitude of mass air flowing past the airflow sensing device. The signal processor is operab... | 02/13/2007 |
| 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 branching into direction-dependent flow paths and can be used at the same tim... | 01/16/2007 |
| 7140261 | Acoustic wave flow sensor An acoustic wave flow sensor is disclosed, which includes a sensor substrate and an acoustic wave diaphragm etched upon the sensor substrate, wherein mechanical stress or strain is concentrated in the acoustic wave diaphragm. One or more interdigital transducers can... | 11/28/2006 |
