| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073300010 | Density or specific gravity | 30 |
| 20110167895 | AEROSOL SENSOR - A method of measuring density of a sterilant aerosol e.g. aqueous hydrogen peroxide, in a gas stream (such as a stream of air) for the purposes of measuring sterilant dosage comprising: passing a gas stream at flow rate past an electrically heated element and measuring a first cooling effect, passing an aerosol suspended in a gas stream at flow rate past an electrically heated element and measuring a second cooling effect and measuring the difference between the first cooling effect and second cooling effect and correlating the difference with aerosol density. The total dosage can thus be determined. A measured dosage of a sterilant aerosol can be delivered by way of a feedback loop to halt further delivery of sterilant aerosol when the amount of aerosol delivered reaches a predetermined dosage. The methods allow sterilization to be certified. | 07-14-2011 |
| 20110283774 | GAS CONCENTRATION DETECTION SENSOR - The sensor element | 11-24-2011 |
| 20120024044 | SYSTEMS AND METHODS FOR DETECTING CONCEALED NUCLEAR MATERIAL - Methods and systems for detecting nuclear material concealed within an enclosure are provided. An ionized air density is measured at one or more locations outside of the enclosure. The presence of the concealed nuclear material is detected, for each of the one or more locations, based on a characteristic of the measured ionized air density indicative of concealed nuclear materials. | 02-02-2012 |
| 20120031170 | CATALYST DEGRADATION DETECTION APPARATUS AND CATALYST DEGRADATION DETECTION METHOD - A determination oxygen storage amount used to determine whether a catalyst is degraded is a value obtained by applying a correction amount for removing error caused by response delay time of an output signal of an oxygen sensor to an oxygen storage amount calculated every short time. The correction amount is a value that is calculated using slopes stored in memory, i.e., the slopes for the number of storage cycles (>the short time) corresponding to the response delay time, or the like, and becomes more accurate as a value corresponding to the error as the storage cycle becomes relatively shorter with respect to the response delay time and the number of the slopes stored in the memory increases. The necessary storage capacity of the memory is inhibited from increasing excessively even if the number of the slopes stored in the memory is large. | 02-09-2012 |
| 20130081447 | Substrate-Integrated Hollow Waveguide Sensors - Methods and apparatuses are provided that greatly expand the utility of conventional hollow waveguide-based sensors via either straight, substrate-integrated channels or via meandering (e.g., circuitous, curved or folded optical paths) waveguide sensor designs. Full- or hybrid-integration of the meandering hollow waveguide with light source, detector, and light-guiding optics facilitates compact yet high-performance gas/vapor and/or liquid sensors of the substrate-integrated hollow waveguide sensor. | 04-04-2013 |
| 20130160523 | DEVICE AND USE OF THE DEVICE FOR MEASURING THE DENSITY AND/OR THE ELECTRON TEMPERATURE AND/OR THE COLLISION FREQUENCY OF A PLASMA - The invention relates to a device and method for measuring the density of a plasma by determining an impulse response to a high-frequency signal coupled into a plasma. The density, electron temperature and/or collision frequency as a function of the impulse response can be determined. A probe having a probe head and a probe shaft can be introduced into the plasma, wherein the probe shaft is connected to a signal generator for electrically coupling a high-frequency signal into the probe head. The probe core is enclosed by the jacket and has at its surface mutually insulated electrode areas of opposite polarity. A balun is arranged at the transition between the probe head and an electrically unbalanced high-frequency signal feed to convert electrically unbalanced signals into balanced signals. | 06-27-2013 |
| 20130233056 | METHOD FOR MEASURING SPECIFIC GRAVITY OF COMBUSTIBLE GASES, DEVICE FOR MEASURING SPECIFIC GRAVITY, AND DEVICE FOR MEASURING WOBBE INDEX - A method for measuring specific gravity of a combustible gas includes measuring the refractive index and sound speed of a gas of interest which contains at least one type of gas selected from a hydrocarbon gas, hydrogen gas, and carbon monoxide gas, and computing the value of the specific gravity Da of the gas of interest from Equation (1) below using a value selected as a correction factor x from within a range of 2.4 to 9.3 on the basis of a refractive index converted specific gravity Dn determined from the refractive index and a sound speed converted specific gravity Ds determined from the sound speed: | 09-12-2013 |
| 20140026641 | Methods for gas leak detection and localization in populated areas using isotope ratio measurements - Improved gas leak detection from moving platforms is provided. Automatic horizontal spatial scale analysis can be performed in order to distinguish a leak from background levels of the measured gas. Source identification can be provided by using isotopic ratios and/or chemical tracers to distinguish gas leaks from other sources of the measured gas. Multi-point measurements combined with spatial analysis of the multi-point measurement results can provide leak source distance estimates. These methods can be practiced individually or in any combination. | 01-30-2014 |
| 20140053631 | GAS DETECTION APPARATUS AND GAS DETECTION METHOD - A gas detection apparatus includes: a heating resistor; and an energization control unit which alternately switches a temperature of the heating resistor to two different temperatures. The gas detection apparatus calculates a density of combustible gas contained in the atmosphere using a heating resistor voltage in a high temperature period and a heating resistor voltage in a low temperature period; acquires three or more values of the heating resistor voltage in each target period; obtains a first average value of the values of the heating resistor voltage obtained in the target period of the high temperature period; obtains a second average value of the values of the heating resistor voltage obtained in the target period of the low temperature period; and uses the first and second average values for a calculation of density of the combustible gas. | 02-27-2014 |
| 20140190238 | VIBRATORY METER AND METHOD FOR DETERMINING RESONANT FREQUENCY - A vibratory meter ( | 07-10-2014 |
| 20150047416 | Scanned 1-D Gas Plume Profile and Flux Measurements Using Multiple Analysis Instruments - A gas concentration image (i.e., concentration vs. position data) in a cross section through a gas plume is obtained. Such measurements can be obtained by moving a 1D array of gas sample inlets through the gas plume. By combining a gas concentration image with ambient flow information through the surface of the gas concentration image, the leak rate (i.e., gas flux) from the leak source can be estimated. Multiple gas analysis instruments can be employed in connection with sweeping a 1-D array of measurement ports through the gas plume in order to reduce analysis time. | 02-19-2015 |
| 20150059444 | Scanned 1-D gas analysis camera having a line pixel weighted for wind speed - A gas concentration image (i.e., concentration vs. position data) in a cross section through a gas plume is obtained. Such measurements can be obtained by using a 2D array of gas sample inlets, or by moving a 1D array of gas sample inlets through the gas plume. By combining a gas concentration image with ambient flow information through the surface of the gas concentration image, the leak rate (i.e., gas flux) from the leak source can be estimated. Gas samples are simultaneously acquired by filling two or more gas sample storage chambers. This is the default operation mode, which is convenient to regard as recording mode. The other operating mode is a playback mode, where the gas samples in the gas sample storage chamber are sequentially provided to a gas analysis instrument. Gas collection via line pixels can be used to compensate for vertical wind speed variation. | 03-05-2015 |
| 073300020 | By pressure measurement | 6 |
| 20120118043 | Measuring Device For Determining The Fill Quantity Of An SF6 Gas In An Isolation Chamber Or A Switchgear, And Corresponding Method - A measuring device according to the invention for determining the fill quantity of SF | 05-17-2012 |
| 20120198917 | STATE OF CHARGE INDICATOR AND METHODS RELATED THERETO - Embodiments of the invention relate a charge indicator for determining the mass of a fluid contained within a fluid enclosure, wherein the charge indicator responds to a deformation of a solid component in contact with the fluid and wherein the deformation is a function of the mass of fluid contained within the fluid enclosure. | 08-09-2012 |
| 20120318044 | DENSITY MONITOR - A density monitor is used for monitoring a gas density in a measured volume with a separating wall which separates a first reference chamber formed in a density monitor housing from the measured volume. The density monitor further includes a separating wall movement detection device for detecting movement of the separating wall. In order to reduce false alarms, a second reference chamber is formed outside of the density monitor housing. The second reference chamber is fluidically connected to the first reference chamber by a fluid line. | 12-20-2012 |
| 20140020449 | Flow Loop Density Measurement Method - A method of measuring a density of two liquid phases in a mixture with a gas phase. The three phase mixture is fed into an inlet vertical column of a flow loop where the gas phase is separated from a liquid mixture of the two liquid phases. The gas phase rises to an upper section of the inlet vertical column, while the liquid mixture flows to a lower section. A differential pressure of the liquid mixture is measured in the lower section. A density of the liquid mixture is calculated using the measured differential pressure of the liquid mixture. A volume or mass percentage is determined for each of the liquid phases in the liquid mixture. A volumetric flow rate is measured. A volumetric flow rate and accumulated volume of each liquid phase is calculated based on the volume or mass percentage of that liquid phase in the liquid mixture. | 01-23-2014 |
| 20160061705 | FUEL DENSITY DETECTION DEVICE - A pulsation detection unit detects, as an actual characteristic, a pulsation frequency of a pressure pulsation, which is caused in fuel pressure, or a physical quantity corresponding to the pulsation frequency, according to a sensor signal from a pressure sensor. The pressure sensor detects a fuel pressure of fuel supplied to a fuel injection valve, which is equipped to an internal combustion engine. A storage unit stores, as a reference characteristic, a reference frequency of a predetermined reference pulsation or a physical quantity corresponding to the reference frequency. A density detection unit detects a fuel density according to a quantity of deviation between the reference characteristic, which is stored in the storage unit, and the actual characteristic, which is detected with the pulsation detection unit. | 03-03-2016 |
| 20160061706 | NETWORK MANAGEABLE ADVANCED GAS SENSOR APPARATUS AND METHOD - Mechanical, electronic, algorithmic, and computer network facets are combined to create a highly integrated advanced gas sensor. A sensor is integrated into switchgear housings. These sensors integrated into high voltage switchgear products, deployed by electric utility end users in replacement and expansion cycles, function to detect and mitigate atmospheric pollution caused by leaking SF | 03-03-2016 |
| 073300030 | By rate of flow | 5 |
| 20080250846 | ENGINE OIL CONSUMPTION MEASUREMENT DEVICE AND ENGINE OIL CONSUMPTION MEASUREMENT METHOD - A measurement device measures engine oil consumption of an engine lubricated by engine oil. The measurement device includes a sensing pipe housing in which a sulfur dioxide sensing pipe arranged to sense the sulfur dioxide is disposed, an exhaust gas introduction passage connecting the engine and a first end of the sulfur dioxide sensing pipe, and arranged to introduce the exhaust gas from the engine to the sulfur dioxide sensing pipe, and a flow amount measurement device arranged to measure the flow amount of the exhaust gas flowing in the sulfur dioxide sensing pipe. The engine oil measurement device is small in size and able to measure engine oil consumption easily. | 10-16-2008 |
| 20110146383 | Measuring transducer of vibration-type, as well as an in-line measuring device having such a measuring transducer - The measuring transducer serves for registering at least one physical, measured variable of a flowable medium guided in a pipeline and/or for producing Coriolis forces serving for registering a mass flow rate of a flowable medium guided in a pipeline. For such purpose, the measuring transducer comprises: A transducer housing ( | 06-23-2011 |
| 20120160011 | Apparatus and Method for Generating Steam Quality Delivered to A Reservoir - Methods and apparatuses for determining the steam quality at a subsurface location for a steam injection operation. The methods involve obtaining a total mass flow rate, measuring a vapor velocity at the subsurface location and a second parameter, determining a vapor density from the second parameter when the second parameter comprises a measurement other than a vapor density, generating a vapor mass flow rate as a function of the vapor velocity, the vapor density and the internal cross-section area of the conduit, and generating the steam quality at the subsurface location as a function of the vapor mass flow rate and the total mass flow rate. | 06-28-2012 |
| 20150143873 | Device for Determining The H2 Content of H2/Natural Gas Mixtures - A device for determination of the H | 05-28-2015 |
| 20150292922 | METHOD OF, AND APPARATUS FOR, MEASURING THE FLOW RATE OF A GAS - There is provided a meter for measuring the flow rate of a gas along a conduit, the meter comprising a sensor assembly including a piezoelectric crystal oscillator comprising two planar tines in contact with, and extending into, said gas flow when the meter is in use, said sensor assembly being arranged: to measure the voltage generated by movement of the planar tines of said piezoelectric oscillator in the gas flow along the conduit; and to determine, from the generated voltage, the flow rate of gas along said conduit. | 10-15-2015 |
| 073300040 | Detector detail | 7 |
| 20090107215 | ALCOHOL DENSITY SENSOR DISPOSED IN FUEL TANK OF AUTOMOTIVE VEHICLE - An alcohol density sensor for detecting an alcohol density in mixture fuel composed of petroleum-fuel and alcohol is installed in a fuel tank of an automotive vehicle. The alcohol density sensor includes a pair of electrodes immersed in the mixture fuel and a conductor portion for connecting the electrodes to a control unit having a circuit board. The conductor portion is composed of a first conductor portion integrally formed with the electrode and a second conductor portion connected to the first conductor portion. The first conductor portion is led out of a casing containing the electrodes and liquid-tightly sealed at a first through-hole formed in the casing. The second conductor portion is led out of the fuel tank through a second through-hole formed in the fuel tank. Since the first through-hole is sufficiently sealed to prevent pressurized mixture fuel in the casing from leaking into an inner space of the fuel tank, sealing of the second through-hole can be simplified. | 04-30-2009 |
| 20090133471 | Apparatus and Use of the Apparatus for the Determination of the Density of a Plasma - Device for determining the density of a plasma, with of a probe ( | 05-28-2009 |
| 20090249862 | System and Method for Determining Air Density Based on Temperature Sensor Data - A computer system and method for measuring air density in a computer chassis. The computer chassis includes a fan, an ambient air temperature sensor, and a heat-generating device with a heat sink, a heat sink temperature sensor, and a controller. The controller controls the fan speed and applies a known amount of thermal energy to the heat sink, then determines the air density from the difference in temperature between the ambient air and the heat sink. The controller may then use the air density determination to adjust the air flow rate through the computer chassis to provide a proper air flow rate for cooling. | 10-08-2009 |
| 20120240662 | DENSITY MEASURING SYSTEM AND DENSITY MEASURING METHOD - A density measuring system, including a container into which a gas is injected, provided with a heating element to which a variety of different voltages is applied; an equation storage device storing a density calculating equation that has, as independent variables, electrical signals obtained from the heating element when each of the plurality of different voltages is applied and has the density as a dependent variable; and a density calculating portion calculating a measured value for the density of the gas that is injected into the container, through substituting measured values for the electrical signals from the heating element into the independent variables of the density calculating equation. | 09-27-2012 |
| 20130081448 | CIRCUIT ASSEMBLY FOR OPERATING A GAS PROBE - The invention relates to a circuit assembly for operating a probe ( | 04-04-2013 |
| 20130174645 | PHOTOACOUSTIC METHOD FOR OXYGEN SENSING - A method for photoacoustically sensing oxygen in a gaseous sample is disclosed, together with an apparatus for practicing the present method. Efficient and cost-effective oxygen sensing is provided by the use of a light source in the form of a light-emitting diode, which can be selected to correspond with the absorption spectra exhibited by oxygen in a gaseous sample. Filtering can be employed in order to control and narrow the wavelength of light emitted by the light source. An apparatus is disclosed which facilitates practice of the present method, including an arrangement by which ambient noise and vibration can be canceled. | 07-11-2013 |
| 20130283888 | GASEOUS GRAVIMETER - An apparatus for estimating gravitational acceleration includes: a chamber having a longitudinal axis and configured to contain a first gas; a first cavity ring-down spectrometer configured to measure a density of the first gas at a first location along the longitudinal axis using a first optical cavity having a first optical axis and configured to resonate light rays that are absorbed by the first gas in the first optical cavity, wherein the first optical axis has at least a vector component perpendicular to the longitudinal axis; and a processor configured to receive a first density measurement from the first cavity ring-down spectrometer and to estimate the gravitational acceleration using the first density measurement. | 10-31-2013 |
