Class / Patent application number | Description | Number of patent applications / Date published |
073250030 |
Thermoconductivity
| 26 |
073250050 |
Detector detail
| 22 |
073250040 |
Moisture content or vapor pressure
| 8 |
073250020 |
With magnetic property (e.g., paramagnetic gas) | 5 |
20110011159 | Device for determining the oxygen content of a gas - The device for measuring the oxygen content in a gas mixture comprises three flow channels, a main channel, a measuring channel and a reference channel, over which the gas stream is distributed. By using a non-homogeneous magnetic field produced by a magnet, the gas flow is deflected into the measuring channel as a function of oxygen content; at the same time, the flow in the reference channel is reduced. The oxygen content of the gas is determined by means of a flow measurement of the volume flow of gas in the measuring or reference channel by means of resistance thermometers. | 01-20-2011 |
20110132070 | SYSTEM AND METHOD FOR MEASURING CONCENTRATION OF A PARAMAGNETIC GAS - In one embodiment, a device for measuring concentration of a paramagnetic gas is provided. The device comprises a measuring cell having a closed cavity therein, a reference gas conduit extending into the cavity for supplying a reference gas to the measuring cell, the reference gas comprising a predetermined concentration of the paramagnetic gas, a measurable gas conduit extending into the cavity for supplying a measurable gas to the measuring cell, the measurable gas comprising a measurable concentration of the paramagnetic gas, a first microphone differentially coupled to the measurable gas conduit and the reference gas conduit, and a second microphone located at a predetermined distance from the reference gas conduit. | 06-09-2011 |
20110252868 | DEVICE FOR MEASURING THE PHYSICAL PROPERTIES OF GASES - A device for measuring the concentrations of paramagnetic gases in a gas sample has at least one modulatable magnetic flux source, which has an air gap, to which a gas sample can be fed. A controllable power source, for generating current and voltage signals, is coupled with the modulatable magnetic flux source in order to generate a modulatable magnetic flux within the air gap. Two measuring points are arranged at least partly within the air gap. Each measuring point has an electrically controllable heating device and a heat conduction-measuring unit or resistive measuring device. Each measuring point is coupled with a variable power source to heat the heating device to a working temperature. Each measuring point is coupled with a measuring circuit to measure heat conduction measured signals generated by the heat conduction-measuring unit, from which the concentrations of paramagnetic gases, which are contained in the gas sample, can be derived. | 10-20-2011 |
20120131988 | Gas Sensor - A gas sensor is described which incorporates a sensor stack comprising a first film layer of a ferromagnetic material, a spacer layer, and a second film layer of the ferromagnetic material. The first film layer is fabricated so that it exhibits a dependence of its magnetic anisotropy direction on the presence of a gas, That is, the orientation of the easy axis of magnetization will flip from out-of-plane to in-plane when the gas to be detected is present in sufficient concentration. By monitoring the change in resistance of the sensor stack when the orientation of the first layer's magnetization changes, and correlating that change with temperature one can determine both the identity and relative concentration of the detected gas. In one embodiment the stack sensor comprises a top ferromagnetic layer two mono layers thick of cobalt deposited upon a spacer layer of ruthenium, which in turn has a second layer of cobalt disposed on its other side, this second cobalt layer in contact with a programmable heater chip. | 05-31-2012 |
20120266656 | DEVICE FOR GENERATING MAGNETIC FIELD, METHOD FOR PREPARING SUCH DEVICE AND GAS SENSOR FOR MEASUREMENT OF PARAMAGNETIC GAS COMPONENT - A device for generating a magnetic field, the device comprises a coil configured to respond to an electric current, a magnetic core comprising poles configured to generate a magnetic field close to the poles, wherein the magnetic field makes a paramagnetic gas component vibrate and emit an acoustic signal, wherein the magnetic core is surrounded at least partly by the coil, and a substrate at least partly covered by the magnetic core and the coil. | 10-25-2012 |
Entries |
Document | Title | Date |
20090007635 | Floating Bubble Jar Gas Dryer for Mud Gas Analyzer - Floating bubble jar gas dryer include a container floating in glycol on top of input gas sample pipe. The gas flow pressure regulates the depth of sinking of the floating container in the drying liquid (glycol for water). Small holes at the bottom of the floating container disperse the gas into the liquid where the diffusion process absorbs the moisture from the gas sample. | 01-08-2009 |
20090064759 | Environmental sensing unit - A duct mounted environmental sensing unit includes a plurality of sensors for detecting respective parameters of a fluid in a duct. The sensing unit enables at least three sensors to make contact with the fluid through a single insertion point in the duct. | 03-12-2009 |
20090084158 | GAS MEASURING DEVICE AND METHOD OF OPERATING THE SAME - A gas measuring device for measuring a presence of a target gas in a fluid medium includes a sensor having a sensing element and a heating element being configured to heat the sensing element to a predetermined operating temperature. The sensing element is responsive to the target gas such that at least one electrical property of the sensing element varies based on a presence of the target gas, and the electrical property of the sensing element is measured by the gas measuring device. The gas measuring device also includes a control circuit having a heating element controller connected to, and measuring an electrical property of, the heating element. The control circuit also includes a heater power supply supplying power to the heating element, wherein the heating element controller is connected to, and controls the operation of, the heater power supply based on the measurement of the electrical property of the heating element. | 04-02-2009 |
20090272175 | Procedure for Measuring the Concentration of a Gas - In a procedure for measuring the concentration of a target gas, a gas sensor is provided whose sensor signal at constant temperature is dependent on a target gas concentration and has a lower measurement sensitivity in a first modulation range than in a second modulation range. The position of the modulation ranges is dependent on the temperature. The temperature of the gas sensor is controlled so that the sensor signal is essentially independent of the target gas concentration and lies within the second modulation range. The temperature of the gas sensor is then a measurement for the target gas concentration. | 11-05-2009 |
20100037678 | Method and Apparatus for Detection, Measurement and Control of Sulfur-Trioxide and Other Condensables in Flue Gas - In a method of determining amounts of condensable species present in a gas containing condensable species a probe is placed into a gas containing condensable species. The probe has a plurality of spaced apart contacts on an outer non-conductive surface. That surface is heated at a selected heating rate and then cooled at a selected cooling rate over a selected time period. During that time period current flow between the contacts and the temperature of the non-conductive surface is monitored over the selected time period. Peaks in a plot of the current flow over the selected time period and the temperature for the time corresponding to each peak are then correlated to the condensable species has a kinetic dew point at each identified temperature. The identified temperature for each identified species is compared to a predetermined correlation of dew point temperature and concentration for that species to determine the concentration of that condensable species present in the gas. | 02-18-2010 |
20100313631 | Fluid Discrimination Method and Fluid Discrimination Apparatus - A fluid discrimination apparatus and a fluid discrimination method are provided for carrying out with accuracy a fluid discrimination such as a fluid type discrimination, a concentration discrimination, the fluid existence or nonexistence discrimination, and a fluid temperature discrimination for a discriminated fluid that is stored in a tank or the like. A characteristic measured value as an index value that indicates the characteristics of the fluid to be discriminated is measured, and a discrimination of a fluid is carried out by comparing the fluid discrimination data that indicates the relationship between a fluid that has been measured in advance and a characteristic value of the fluid with the characteristic measured value. | 12-16-2010 |
20110061444 | CERAMIC HEATER AND GAS SENSOR INCLUDING THE SAME - A ceramic heater including: a ceramic substrate having a heater element which generates heat when energized and an electrode pad disposed on a surface of the ceramic substrate, the electrode pad being electrically connected to the heater element, and a connection terminal electrically connected to the electrode pad through a braze part bonded to the electrode pad, the braze part being made of an alloy of copper and gold and the connection terminal being made of nickel or a nickel alloy, wherein a first region of the braze part within a distance of 15 μm from a contact face between the braze part and the connection terminal has a gold content of more than 6 wt % and less than 10 wt %. | 03-17-2011 |
20110138879 | Method and control unit for detecting a gas concentration of gas from a gas mixture | 06-16-2011 |
20110146382 | Carbon dioxide sensor and associated method for generating a gas measurement value - A gas sensor detects carbon dioxide, for example for use in air-conditioning systems. The gas sensor is based on a field effect transistor construction. It has a polymer-based material sensitive to carbon dioxide as gas-sensitive layer. The material has a cross-sensitivity with respect to air humidity. The influence of humidity is compensated for by using the signal of a humidity sensor. | 06-23-2011 |
20110162436 | Sensor element containing a sealing element for a functional component - A sensor element having a layered construction and configured to detect a physical property of a gas or a liquid includes a functional component situated in the interior, which functional component is connected electrically to a conductor element, which conductor element extends up to the outer surface or up into the surroundings of the sensor element. The sensor element has at least one sealing element which adjoins the functional component and/or the conductor element. The conductor element and the at least one sealing element are configured to be gas-tight at least regionally in the interior of the sensor element and are situated in such a way that the functional component is separated gas-tight from the surroundings of the sensor element. | 07-07-2011 |
20110209526 | METHOD AND THERMAL, FLOW MEASURING DEVICE FOR DETERMINING AND/OR MONITORING AT LEAST ONE VARIABLE DEPENDENT ON AT LEAST THE CHEMICAL COMPOSITION OF A MEASURED MEDIUM - Method and thermal, flow measuring device for determining at least one variable dependent on at least the chemical composition of a measured medium, wherein the measured medium has n components, wherein n is greater than or equal to two, wherein each mole fraction, volume fraction and/or mass fraction of m components of the medium is measured, wherein m is smaller than or equal to n minus one, wherein the mole fractions, volume fractions and/or mass fractions of the k components of the measured medium which are not measured, and wherein k is equal to n minus m, are established in such a manner, that the sum of the mole fractions, volume fractions and/or mass fractions of the n components amounts to one. | 09-01-2011 |
20110226041 | Integrated CMOS porous sensor - A single chip wireless sensor comprises a microcontroller connected to a transmit/receive interface, which is coupled to a wireless antenna by an L-C matching circuit. The sensor senses gas or humidity and temperature. The device is an integrated chip manufactured in a single process in which both the electronics and sensor components are manufactured using standard CMOS processing techniques, applied to achieve both electronic and sensing components in an integrated process. A Low-K material with an organic polymer component is spun onto the wafer to form a top layer incorporating also sensing electrodes. This material is cured at 300° C., which is much lower than CVD temperatures. The polyimide when cured becomes thermoset, and the lower mass-to-volume ratio resulting in K, its dielectric constant, reducing to 2.9. The thermoset dielectric, while not regarded as porous in the conventional sense, has sufficient free space volume to admit enough gas or humidity for sensing. | 09-22-2011 |
20110283772 | METHOD AND SYSTEM FOR MEASURING A FLOW - A method is described for measuring a flow of gas passing a flow meter device. The device causes a pressure drop when a gas flows through it. The pressure drop across the device is a measure of the gas flow. The device is configured as a gas permeable tube that has a flow channel on the upstream side along the tube configured so as to decrease the cross-section of the channel downstream of the gas permeable tube. This provides for a minimum volume in the channel upstream of the device's pressure-drop-generating component. | 11-24-2011 |
20120006097 | METHOD AND APPARATUS FOR MONITORING GAS CONCENTRATION - The method and apparatus are intended for monitoring the concentration of a gas in a fluid medium, such as in a liquid or gas medium. In a probe for measuring the temperature and gas concentration in the fluid medium, a gas concentration sensor comprising first and second electrodes is supported at a probe end of a tubular support. The probe end, in use, contacts the fluid medium. A thermocouple comprising a thermocouple junction and two thermocouple wires extends within the tubular support and the first electrode of the gas concentration sensor is electrically connected to the thermocouple. In the method for monitoring gas concentration, the gas concentration is measured by monitoring a voltage between at least one of the thermocouple wires and the second electrode. | 01-12-2012 |
20120151996 | OXYGENATED BUTANOL GASOLINE COMPOSITION HAVING GOOD DRIVEABILITY PERFORMANCE - A gasoline blend and a method for producing a gasoline blend containing low concentrations of a butanol isomer and having good cold start and warm-up driveability characteristics are disclosed. | 06-21-2012 |
20120192621 | Heatable Flow-Through Measurement Cell - A heatable flow-through measuring cell for a gas analyzer having an inner tube made of a corrosion-resistant material, such as stainless steel, and is terminated at each end with a respective end piece and a radiolucent window held therein. The measuring cell also includes an electrical heating apparatus for heating each end piece, an outer tube that coaxially surrounds the inner tube so as to form a narrow gap and is made of material with good thermal conductivity, such as aluminum, and includes thermal insulation that surrounds the outer tube. | 08-02-2012 |
20120204622 | GAS ANALYZER - Gas analyzer systems and methods for measuring concentrations of gasses and in particular dry mole fraction of components of a gas. The systems and method allow for rapid measurement of the gas density and/or dry mole fraction of gases for a number of environmental monitoring applications, including high speed flux measurements. A novel coupling design allows for tool-free removal of a cell enclosing a flow path to enable in field cleaning of optical components. | 08-16-2012 |
20120304739 | GENERATED GAS COLLECTING METHOD AND MEASURING METHOD - According to one embodiment, a generated gas collecting method collects a generated gas after exposing the interior of a chamber to an organic gas having a boiling point higher than that of the generated gas. | 12-06-2012 |
20130000384 | MEASUREMENT SENSOR FOR MOLD INSIDE INFORMATION - Gas pressure in a cavity is detected with a rod-shaped casing that attaches to an hole that opens into the cavity. A porous filter whose top end face matches with a mold cavity face at a top end of the rod-shaped casing separates gas from melt. Cavity gas from an introduction chamber introduces gas through the porous filter, and a gas pressure sensor detects pressure in the chamber. Melt pressure in the cavity is detected with a pressure transmission rod inserted into the rod-shaped casing whose top end face matches with the mold cavity face, and a pressure sensor fixed and held facing a rear end of the pressure transmission rod detects the cavity melt pressure. Cavity melt temperature is detected with a temperature sensor attached to a thin hole formed at the pressure transmission rod's center and includes a thermocouple at a top end part side of the hole. | 01-03-2013 |
20130081445 | GAS SENSOR AND METHOD FOR DETERMINING A CONCENTRATION OF GAS IN A TWO-COMPONENT MIXTURE - The described sensor allows determination of the concentration of a gas in a two-component mixture at variable pressure by measuring the diffusivity and the thermal conductivity. The sensor is provided to alternately heat the membrane ( | 04-04-2013 |
20130091926 | Systems and Methods for Measuring, Monitoring and Controlling Ozone Concentration - Systems and methods to determine ozone concentration in a gas mixture of ozone and oxygen, based on measurements of the total gas mixture properties, can enable the measurements of ozone concentration at low pressure settings. The ozone concentration determination can be applied to vacuum processing chamber, using either novel ozone sensor or existing mass flow meter or controller. | 04-18-2013 |
20130091927 | System and Method for Detecting Aberrations in a Conduit - A system for detecting aberrations within a workpiece having a conduit with an input end and an output end is disclosed. The system comprises a fluid delivery device arranged proximate to input end of conduit to pass fluid into input end of the conduit, the fluid delivery device having one or more fluid controllers that control one or more conditions of the fluid passed thereby, a sensor having an input and an output, the input arranged proximate to output end of conduit to measure one or more conditions of the fluid experienced by input, a workpiece exciter situated to excite workpiece and a processor having an input connected to the output of sensor, the processor having a correlator to correlate any changed of the one or more conditions of the fluid experienced by input of sensor with an excitement of workpiece by sensor. | 04-18-2013 |
20130219993 | HIGH-THROUGHPUT MODULAR HYDROGEN STORAGE ENGINEERING PROPERTIES ANALYZER - A cover, sample tray and base may form a hydrogen storage engineering properties analyzer. In at least one embodiment, the sample tray includes a plurality of cooling fins, each of which includes a sample well therein. A variety of hydrogen storage materials may be loaded into and unloaded from each sample well by way of a respective sample well opening. The combined cover and sample tray define at least one plenum which may be in fluid communication between a source of pressurized hydrogen gas and each sample well. The cooling fins may be received by a cooling chamber defined within the base and configured to receive a through-flow of heat-exchange fluid. Certain embodiments may include one or more pressure transducers in fluid communication between the plenum and hydrogen source, and thermal transducers connected to portions of the cooling fins. | 08-29-2013 |
20130298639 | Thermal Analysis Device and Method for Thermal Analysis Comprising Gas Analysis - A thermoanalysis device, including a controllable temperature regulating device for the controlled change in the temperature of a sample to be investigated, a detection device for the continuous detection of at least one signal characteristic of a property of the sample during the change in the temperature, and a gas analysis device for investigating gases which are liberated from the sample. In order to enable an improved time- and temperature-resolved investigation of volatile components and decomposition products, provision is made according to the invention such that, during the change in the temperature of the sample, the temperature regulating device is controlled according to a control algorithm taking account of the detected signal and/or the gas analysis device is constituted so as to be controllable and is controlled according to a control algorithm taking account of the detected signal. | 11-14-2013 |
20130327124 | METHOD FOR SETTING A TEMPERATURE OF A SENSOR ELEMENT - A method for setting a temperature of a sensor element, which is heatable with the aid of a heating device, for detecting at least one property of a gas in a measuring gas chamber includes at least one regulation of the heating device, the regulation including: (a) detecting at least one actual value of at least one controlled variable of the sensor element, (b) ascertaining a setpoint value of the at least one controlled variable, (c) generating at least one manipulated variable of the heating device with the aid of a comparison of the setpoint value and the actual value, and (d) in a monitoring step, checking at least one parameter used to set the temperature, and the at least one manipulated variable being influenced as a function of the check. | 12-12-2013 |
20140020448 | COMBUSTIBLE GAS DETECTING DEVICE - A flammable gas concentration detection apparatus ( | 01-23-2014 |
20140165704 | METHOD AND DEVICE FOR DISSOLVED GAS ANALYSIS - A system, comprising at least one source for irradiating electromagnetic radiation into a sample fluid and a reference fluid resulting in a change in a temperature of the sample fluid and a change in a temperature of the reference fluid, and a processing subsystem that monitors and determines a concentration of a gas of interest dissolved in the sample fluid based upon a difference between the change in the temperature of the sample fluid and the change in the temperature of the reference fluid, wherein the reference fluid does not contain the gas of interest, and the electromagnetic radiation has a wavelength range corresponding to a spectral absorption range of the gas of interest. | 06-19-2014 |
20140174152 | MEASUREMENT SYSTEM AND METHOD FOR CHARGED AMOUNTS IN A PRESSURE CONTAINER USING PRESSURE AND VOLUME - A measuring system for the charged amounts in a pressure container using pressure and volume comprising: an information acquisition device that can collect information on volume and maximum charging pressure of the pressure container; first and second automatic valves, a reference container, a pressure sensor and a temperature sensor that are connected to a gas line between a storage tank and a charging nozzle; a control part that calculates the charged amounts through engineering calculations with pressure detected by the pressure sensor, temperature detected by the temperature sensor, and basic information on the pressure container and that calculates changes in temperature and volume of the pressure container to calibrate for the charged amounts, determine safety of the pressure container, and convert the calibrated charged amount to a sum of money; and a display part that receives the calculated information from the control part and inform it to a user. | 06-26-2014 |
20140196521 | DETECTION OF DIESEL EXHAUST FLUID CONTAMINATION - A method for detecting contamination in diesel exhaust fluid (DEF) used in a selective catalytic reduction process is disclosed. The method may include providing a plurality of temperature sensors arranged along a fluid column within a tank containing the DEF to be tested. The method may further include detecting a temperature of the fluid at each of the plurality of temperature sensors along the fluid column, determining temperature gradients along the fluid column from the temperatures detected by the plurality of temperature sensors, and comparing the temperature gradients along the fluid column with a set of reference temperature gradients. | 07-17-2014 |
20140360249 | APPARATUS AND ITS ARRANGEMENT WITH DUCT TO DETERMINE FLOWABLE MEDIUM PARAMETERS - An apparatus is mountable to a duct having a cross-section, for determining parameters of a flowable medium flowing through the duct. The apparatus includes a mounting attachment having a conduit member, and at least one combination of multiple sensing members configured to the conduit member. The conduit member may be disposed entirely within the duct such that the multiple sensing members are located within the duct establishing direct contact with the flowable medium. The multiple sensing members include oxygen and temperature sensing elements respectively, to determine parameter such as oxygen level in the flowable medium, and temperature of the flowable medium. Several such apparatus may be mounted in the duct across the cross-section to define a grid to determine said parameter at various locations across the cross-section. | 12-11-2014 |
20150068281 | SPRING LOADED EXHAUST GAS TEMPERATURE SENSOR ASSEMBLY - An improved temperature sensor assembly ( | 03-12-2015 |
20150096350 | NH3 STORAGE SETPOINT TEMPERATURE ALGORITHM - A method for predicting an exhaust gas temperature. The method includes detecting a plurality of exhaust gas temperatures and applying a weight value to the detected plurality of exhaust gas temperatures to determine a plurality of weighted temperature values. The weight value applied to at least one detected exhaust gas temperature may be different than the weight value applied to at least one other detected exhaust gas temperature. The method also includes determining an estimated temperature corresponding to the plurality of weighted temperature values and the applied weight value. The estimated temperature may be used to determine a set-point for the storage or absorption of a reductant by a catalyst. Moreover, the estimated temperature may allow for an adjustment to the reductant being stored on the catalyst if the storage capacity of the catalyst may be changing based on a predicted change in exhaust gas temperature. | 04-09-2015 |
20150300918 | COMBUSTOR FLAMEOUT DETECTION LOGIC - A method for detecting a flame condition in a combustor of an engine is disclosed. The method may include detecting a temperature of an exhaust gas from the engine, and determining the flame condition in the combustor based on the detected temperature. | 10-22-2015 |
20160024673 | Nanowire Structural Element - A template based process is used for the production of the nanowire structural element, wherein the nanowires are electrochemically depositioned in the nanopores. The irradiation is carried out at different angles, such that a nanowire network is formed. The hollow chamber-like structure in the nanowire network is established through the dissolving of the template foil and removal of the dissolved template material. The interconnecting of the nanowires provides stability to the nanowire structural element and an electrical connection between the nanowires is created thereby. | 01-28-2016 |
20160033433 | Gas Sensor - In order to prevent deterioration and a breakdown of a sensor element when the sensor element is activated in a state where liquid is attached thereto, and to remove the liquid in a short period of time with lower power consumption, there is provided a gas sensor including a first heating element and a second heating element that is formed around the periphery of the first heating element and has a wider forming area than the first heating element, and measuring a gas amount by heating the first heating element to a predetermined temperature, in which the second heating element is heated when the gas sensor is activated, and the first heating element is heated to the predetermined temperature after a heat value of the first heating element is restricted for a predetermined period of time. | 02-04-2016 |
20160103082 | HYDROGEN GAS SENSOR WITH CONCENTRATION FUNCTION AND HYDROGEN GAS SENSOR PROBE USED IN SAME - A hydrogen gas sensor element and a hydrogen gas concentration part which has, on a membrane thermally isolated from a substrate, a heater, a temperature sensor and a hydrogen gas absorbing substance are provided in the same microchamber. Hydrogen gas is released from the concentration part and highly concentrated due to heat applied by the heater, and the highly concentrated hydrogen gas is measured by the hydrogen gas sensor element. Because the hydrogen gas absorbing substance exhibits selectivity for hydrogen gas, there is no need for the hydrogen gas sensor element to exhibit selectivity for hydrogen gas. An airflow limiting part is provided in the exit/entrance opening of the microchamber, whereby dilution of hydrogen gas by the entrance of external airflow is prevented. Introduction of the gas to be investigated into the microchamber is performed at predetermined intervals using an introduction means such as a pump. | 04-14-2016 |
20160103111 | OCCUPANT SAFETY SYSTEM WITH C02 DETECTION - An occupant safety system for a vehicle includes a carbon-dioxide (CO2) sensor and a controller. The CO2 sensor is configured to determine a CO2 concentration in a passenger cabin of the vehicle while the vehicle is not operating, i.e. parked. The controller is configured to determine that the passenger cabin is occupied by an occupant based on the CO2 concentration in a passenger cabin while the vehicle is not operating. If the CO2 concentration is a concern while the vehicle is not operating, the system may respond by activating a notification means such as a vehicle horn or alarm, or by ventilating the passenger cabin via opening the windows or operating a blower of a HVAC system of the vehicle. | 04-14-2016 |