| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073240020 |
Produced by radiant energy
| 64 |
| 073240060 |
Detector detail
| 27 |
| 073240030 |
Solid content of gas
| 7 |
| 073240040 |
Moisture content or vapor pressure of gas | 5 |
| 20090260422 | Ultrasonic sensor - An ultrasonic sensor includes a transmitting device, a receiving device, and a circuit device. The circuit device determines that the receiving device receives an ultrasonic wave reflected from an object, when an output voltage of the receiving device is equal to or greater than a first threshold. The circuit device includes a humidity detection section configured to detect an ambient humidity of the transmitting and receiving devices and a threshold adjustment section configured to calculate, based on the detected ambient humidity, a sound pressure of the ultrasonic wave that is received by the receiving device after propagating over a round-trip distance between the ultrasonic sensor and the object. The threshold adjustment section reduces the first threshold, when the output voltage corresponding to the calculated sound pressure is less than a second threshold that is greater the first threshold. | 10-22-2009 |
| 20100107735 | Gas Sensor - A gas sensor with instant response uses one or more oscillators while no chemical reactions or other material modifications are involved. Sensor can be used in any application to measure a percent range of gas concentrations, or mass of the absorbed gas. | 05-06-2010 |
| 20120036917 | SENSING DEVICES AND METHODS - Embodiments of the present disclosure include devices and methods for humidity and temperature sensing. For example, in one embodiment, a sensing device can include a first surface acoustic wave (SAW) component, wherein the first SAW component is a temperature component, a second SAW component, wherein the second SAW component is a humidity component, a third SAW component, wherein the third SAW component is a reference component, and a piezoelectric layer, wherein the first SAW component, the second. SAW component, and the third SAW component are on a surface of the piezoelectric layer. | 02-16-2012 |
| 20130067992 | APPARATUS AND METHOD FOR ACOUSTIC MONITORING OF STEAM QUALITY AND FLOW - An apparatus and method for noninvasively monitoring steam quality and flow and in pipes or conduits bearing flowing steam, are described. By measuring the acoustic vibrations generated in steam-carrying conduits by the flowing steam either by direct contact with the pipe or remotely thereto, converting the measured acoustic vibrations into a frequency spectrum characteristic of the natural resonance vibrations of the pipe, and monitoring the amplitude and/or the frequency of one or more chosen resonance frequencies, changes in the steam quality in the pipe are determined. The steam flow rate and the steam quality are inversely related, and changes in the steam flow rate are calculated from changes in the steam quality once suitable calibration curves are obtained. | 03-21-2013 |
| 20160061777 | ENVIRONMENT MEASURING DEVICE AND ENVIRONMENT MEASURING METHOD - An environment measuring device | 03-03-2016 |
| 073240050 |
Density or specific gravity of gas | 1 |
| 20140060154 | Method and measuring system for ascertaining density of a fluid - A method for producing at least one oscillation measurement signal, which has vibrations of a vibratory body are registered. A temperature sensor is applied thermally attached with a non fluid contacting, second surface of the vibratory body for producing a temperature measurement signal representing a time curve of a variable temperature of the vibratory body. The temperature measurement signal can follow, however time delayed, a change of the temperature of the vibratory body from a beginning temperature value, to a new temperature value. Based on the oscillation measurement signal as well as the temperature measurement signal, density, measured values are produced representing the density, wherein, during such, discrepancies possibly occurring between the time curve of the temperature of the vibratory body and the temperature measurement signal are taken into consideration, respectively at least partially compensated. | 03-06-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20090314058 | REDUCTION OF PRESSURE INDUCED TEMPERATURE INFLUENCE ON THE SPEED OF SOUND IN A GAS - An apparatus for determining the proportion of gases in a gas mixture, has a measurement chamber having a chamber defining structure, a gas inlet and a gas outlet, an ultrasound source and an ultrasound detector mounted such that the ultrasound source is capable of transmitting ultrasound through the chamber to the ultrasound detector; a temperature sensor mounted such that the sensor is capable of sensing the temperature in the chamber. The chamber defining structure is adapted to amplify thermal exchange with a gas content in the chamber so as to suppress a temperature change in the chamber. | 12-24-2009 |
| 20100000292 | SENSING DEVICE - A sensing device for detecting an analyte is disclosed. In one aspect, the device includes at least one geometrical structure and at least two clamps provided for clamping the at least one geometrical structure on at least two ends of the geometrical structure. The at least one geometrical structure has at least one chemical responsive layer being absorbent or adsorbent for the analyte, and a support structure provided for at least partly supporting the at least one chemical responsive layer. The at least one chemical responsive layer has a varying effective spring constant which changes upon absorption or adsorption of the analyte. | 01-07-2010 |
| 20100037677 | WAVE SENSOR APPARATUS INCLUDING GAS REMOVING UNIT AND METHOD OF DETECTING TARGET MATERIAL IN LIQUID SAMPLE - Disclosed is a wave sensor apparatus including a unit for removing a gas and a method of detecting a target material in a liquid sample, the method including removing a gas in the liquid sample. | 02-18-2010 |
| 20100058834 | METHOD AND APPARATUS FOR LOW DRIFT CHEMICAL SENSOR ARRAY - An on-chip low baseline drift SAW/LAW chemical sensor array and method of forming the same. A dual SAW delay line includes a common IDT for generating an acoustic wave and a pair of IDT for reception of the acoustic wave. One sensing layer or one reference layer can be deposited in position on each side of the common IDT. An ASIC chip includes on chip dual operational amplifiers and a mixer in order to obtain a differential measurement utilizing a difference being given by the sensing and the reference layers. A 3D technology can be employed in order to connect the sensor array and the ASIC in the same package and thereby form a 3D stack. The chemical sensor array and the ASIC can be configured in different packages and interconnected on the same substrate utilizing 2D technologies. A number of gases can be detected independently, and each gas can be detected differentially, with respect to its associated sensing layer and specific reference layer. | 03-11-2010 |
| 20100126249 | ULTRASONIC APPARATUS AND METHOD FOR MEASURING THE CONCENTRATION OF GAS - In an ultrasonic apparatus for measuring the concentration of gas provided with two ultrasonic oscillators for transmitting/receiving an ultrasonic wave, arranged opposite to each other in piping through which a sample gas flows, a temperature sensor, and a pressure sensor, an ultrasonic method and apparatus that can accurately measure gas concentration regardless of pressure of the sample gas are provided as an ultrasonic apparatus for measuring the concentration of gas comprising concentration calculating means for calculating sample gas concentration based on a propagation speed correction coefficient by pressure. | 05-27-2010 |
| 20100275675 | DEVICE FOR MEASURING PRESSURE, VARIATION IN ACOUSTIC PRESSURE, A MAGNETIC FIELD, ACCELERATION, VIBRATION, OR THE COMPOSITION OF A GAS - The invention relates to a sensor ( | 11-04-2010 |
| 20100281949 | REDUCTION OF PRESSURE INDUCED TEMPERATURE INFLUENCE ON THE SPEED OF SOUND IN A GAS - An apparatus for determining the proportion of gases in a gas mixture, has a measurement chamber having a chamber defining structure, a gas inlet and a gas outlet, an ultrasound source and an ultrasound detector mounted such that the ultrasound source is capable of transmitting ultrasound through the chamber to the ultrasound detector; a temperature sensor mounted such that the sensor is capable of sensing the temperature in the chamber. The chamber defining structure is adapted to amplify thermal exchange with a gas content in the chamber so as to suppress a temperature change in the chamber. | 11-11-2010 |
| 20100294020 | Method for detecting low concentration gas - Disclosed is a method for detecting a low concentration gas. In the method, a measurand gas containing the target gas in a concentration of 50 ppm or less is supplied to an oscillation element which contains a quartz crystal resonator and a zeolite including a metal complex (such as a zeolite including a cobalt phthalocyanine complex) present on or above the quartz crystal resonator. The target gas is then detected through a change in resonance frequency of the quartz crystal resonator, the change being caused by the adsorption of the target gas by the metal-complex-including zeolite. | 11-25-2010 |
| 20120006096 | GAS SENSOR USING NANOTUBES - Techniques are generally described for detecting a concentration level of at least one gas. Some example devices may include a sensor including conductive plate on a surface of dielectric including a nanotube layer formed thereon. The conductive plate and the nanotube layer form a resonator that resonates at a frequency in response to an interrogation signal. The nanotube layer may be configured to associate with one or more gas molecules. The frequency at which the resonator resonates may shift according to which gas molecules are associated with the nanotube layer to identify a particular gas. An amount of resonance may be exhibited as a resonant response signal. An amplitude of the resonant response signal may be indicative of the concentration level of the detected gas. | 01-12-2012 |
| 20130031956 | Method for Detecting Gas and a Gas Detector Therefor - It is presented a method for detecting a gas (G). Acoustic waves (W | 02-07-2013 |
| 20130125622 | MULTI-CHAMBERED ACOUSTIC SENSOR FOR DETERMINATION GAS COMPOSITION - A sound velocity sensor is defined by a hermetic multi-chambered enclosure for containing flowing gases and mixtures of gases. The contained flowing gases are acoustically excited and the acoustic energy is measured over a fixed distance between a first sending end of the enclosure and a receiving end. The speed of sound of the gases are determined by comparing the energy transmitted through the flowing gases at various frequencies so as to precisely determine the resonant frequency of the gases flowing through the enclosure. In accordance with the present design, the chambers of the enclosure include internal transition shapes therebetween for optimizing the transmission of acoustic energy through the flowing gases and also enhancing one or more additional resonant modes at higher useful frequencies. The transition shapes used in connection with the sensor can be at least one of parabolic, hyperbolic, linear and exponential in nature. | 05-23-2013 |
| 20130312490 | Portable Device for Collecting Particles and Microorganisms - The invention relates to a device ( | 11-28-2013 |
| 20140000342 | METHOD OF AND APPARATUS FOR MEASURING THE MOLECULAR WEIGHT OF A GAS | 01-02-2014 |
| 20140060153 | APPARATUS AND METHOD FOR IMPROVED ACOUSTICAL TRANSFORMATION - An acoustical transformer having a last matching section that includes a protective barrier of low permeability. The protective barrier is in contact with a test medium. In one embodiment, the protective barrier comprises one or more low permeability layers, such as a metallic foil or metallic coating(s) disposed on a low impedance layer such as polyimide, so that the low impedance layer and the protective barrier constitute the last matching section of the acoustical transformer. In other embodiments, the protective barrier comprises a fluoropolymer. A method for determining the thicknesses of the various layers of the acoustical transformer for enhanced performance is also disclosed. | 03-06-2014 |
| 20140096591 | Ultrasonic Tools for Detection of Gasoline/Ethanol Phase Separation - A method to detect a phase separation of gasoline and ethanol may include the steps of generating a sound signal in a tank, determining a speed of the sound signal, determining an interface level in the tank, determining the speed of the sound signal below the interface level and determining the phase separation based upon the speed of the sound signal. | 04-10-2014 |
| 20140318218 | Ultrasonic Transducers in Aspirating Smoke Detectors for Transport Time Measurement - A method and apparatus of determining gas transport time from an input port to first and second ultrasonic detectors in a flow conduit for an aspirated smoke detector includes first measuring transit time of ambient air between the detectors. Then a different gas is injected into the conduit and the time of injection is stored. The transit time is measured at least intermittently between the two ultrasonic detectors until a change therein is detected. A time of detected change is subtracted from the time of injection to establish a transport time for the aspirated smoke detector. | 10-30-2014 |
| 20140338423 | ACOUSTIC SENSOR - An acoustic sensor includes a side wall, closed at each end by an end wall, to form a substantially cylindrical cavity, a transmitter and a receiver operatively associated with first and second respective end walls. Properties of the relative dimensions of the cavity are configured to create a desired oscillatory motion of the end walls, and oscillations of a fluid pressure in the cavity, to generate an electrical signal via the receiver to be output from the sensor. An array of acoustic sensors can be connected to allow calibration of one of the array of sensors. | 11-20-2014 |
| 20150059442 | ACTIVE ACOUSTIC SPECTROSCOPY - In the present invention a controllable acoustic source ( | 03-05-2015 |
| 20150128682 | METHOD OF, AND APPARATUS FOR, MEASURING THE TRUE CONTENTS OF A CYLINDER OF GAS UNDER PRESSURE - There is provided a sensor assembly ( | 05-14-2015 |
| 20160047779 | PORTABLE FUEL DILUTION METER AND METHOD - A portable fuel dilution meter and method includes a plurality of sample bottles each with a lid securable thereto and an absorbent material in the bottle. A housing includes a sample bottle receptacle and a hinged head unit over the receptacle including at least a first needle piercing the lid of a sample bottle loaded into the housing receptacle and extending into the headspace of the sample bottle when the head is closed. A vapor sensor is fluidly coupled to the first needle for analyzing vapors in the headspace of the sample bottle. | 02-18-2016 |
| 20160069850 | RESONANT CO2 SENSING WITH MITIGATION OF CROSS-SENSITIVITIES - Various exemplary embodiments relate to a device to measure carbon dioxide (CO | 03-10-2016 |
| 20170234758 | GIS leak monitoring method based on vibration signal | 08-17-2017 |
