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| Number | Title | Issue Date |
| 8074487 | Method of calibrating an apparatus for measuring radon and/or its progeny in an air sample A method of calibrating an apparatus for measuring Radon and/or its progeny in an air sample, includes providing an apparatus for measuring Radon in an air sample that includes a preset offset voltage corresponding to a threshold conductivity value and a preselected... | 12/13/2011 |
| 7975525 | Self-calibrating sensor Embodiments of the present invention relate to a gas sensor comprising a flow channel, a concentration modulator positioned in the flow channel, a gas generator in contact with the flow channel, one or more gas detectors positioned downstream of the concentration mo... | 07/12/2011 |
| 7934412 | Innovative gas monitoring with spacial and temporal analysis The present invention relates to the monitoring of gas concentrations possible in very low ranges (i.e., low ppb and even ppt ranges) and especially use thereof in environmental monitoring, exposure assessment, bomb detection, and health studies. The invention can u... | 05/03/2011 |
| 7805975 | Gasless calibration in metabolic gas analyzers A method of calibrating a metabolic analyzer incorporating an oxygen analyzer and a NDIR carbon dioxide analyzer in the field that does not require the use of gas cylinders containing gases of known concentration is described. In calibrating the CO2 detec... | 10/05/2010 |
| 7802461 | Method and device for detecting leaks In leak detection, the signal generated by a test gas is superposed by interferences which fade as the vacuum generation in a container proceeds. Depending on the negative slope of the volume signal (MS), a lower indication limit (AG) is calculated. Upon activation ... | 09/28/2010 |
| 7366626 | Calibration method and zirconia-type oxygen analyzer using this method A calibration method in which secular change in sensor output values obtained at calibration times is estimated and the next calibration date can be determined at an appropriate interval and a zirconia-type oxygen analyzer using the above calibration method is achie... | 04/29/2008 |
| 7360456 | Six-axis sensor A sensor strain causer can be made into a simple shape, and the attachment work for strain gauges is made easy. In a multiaxial sensor 1 for measuring one or more of multiaxial force, moment, acceleration, and angular acceleration, externally applied, a plura... | 04/22/2008 |
| 7359804 | System and method for calibrating remote emissions sensing instruments A system and method is provided for obtaining calibration curves for CO and CO2 during laboratory calibration of one or more remote emissions sensing (RES) instruments, and for self-calibration of on-road RES instruments to compensate for changes in backg... | 04/15/2008 |
| 7326922 | Gas sensor with one point calibration System and method for calibrating a sensor comprises a detector capable of detecting electromagnetic radiation at least at a radiation wavelength of interest, an analyzer capable of determining concentration values in response to the detected radiation, and a calibr... | 02/05/2008 |
| 7318349 | Three-axis integrated MEMS accelerometer 3D accelerometer for measuring three components of inertial force (or acceleration) vector with respect to an orthogonal coordinate system, which has high sensitivity due to a big proof mass located within a cavity beneath the surface of the sensor die. The size of ... | 01/15/2008 |
| 7249510 | Semiconductor acceleration sensor and manufacturing method thereof A semiconductor acceleration sensor in which a reduction in size can be achieved when electrodes are formed in a chip main body and acceleration can be measured with good sensitivity. The semiconductor acceleration sensor comprises a weight section, flexible section... | 07/31/2007 |
| 7243559 | Exhaust gas particulate measuring system A gas sampling system 36 capable of testing and certifying internal combustion engines 16 under transient conditions is provided and includes a partial flow dilution tunnel 38, master and slave mass flow controllers 80,60 and a transient ... | 07/17/2007 |
| 7232512 | System and method of sensitivity adjustment for an electrochemical sensor A gas detector with a compensated electrochemical sensor exhibits altered sensitivity in response to decreasing sensitivity relative to both gas exposure and non-gas exposure. A sensitivity adjustment can be established in response thereto. ... | 06/19/2007 |
| 7187178 | Method for determining the voltage sensitivity of the distance between the mirrors of a fabry-perot interferometer A method for determining the voltage sensitivity of the distance between the mirrors of a Fabry-Perot interferometer in a measuring device, which is intended to measure a predefined gas (CO2), of which at least one absorption maximum or minimum is known. At least tw... | 03/06/2007 |
| 7171252 | Methods, computer program products, and devices for calibrating chronically tissue implanted sensors using chronically tissue Calibration of in vivo oxygen and pH sensor systems can be performed by generating a constituent element of an environment proximate to an in vivo sensor electrode via an in vivo generating electrode and determining a level of the constituent element in the tissue v... | 01/30/2007 |
| 7165443 | Vacuum leakage detecting device for use in semiconductor manufacturing system A vacuum leakage detecting device includes a process chamber for performing processes, a fluid valve, and a dry pump. The device further includes a helium gas sensor to detect helium gas in order to check vacuum leaks in potential external leak points. ... | 01/23/2007 |
| 7167098 | Testing equipment for a fire alarm The present invention relates to testing equipment 20 for a fire alarm 1. It includes a testing pole (21), a range spacer (23) connected to the testing pole (21), and a reflective means and/or scattering means situated in the insid... | 01/23/2007 |
| 7147484 | Electronic apparatus and board assembly The present invention provides an electronic apparatus and a board assembly which are easy to assemble by increasing their visibility even when a connector is disposed in a position where it is originally difficult to see. The apparatus includes: a board assembly in... | 12/12/2006 |
| 7145653 | In situ particle monitoring for defect reduction A system and method is provided for monitoring and controlling the contaminant particle count contained in an aerosol during a photoresist coating and/or development process of a semiconductor. The monitoring system monitors the contaminate particle count present in... | 12/05/2006 |
| 7096714 | Volatile signature detector and associated methods A detector (D) for detecting the volatile signature of one or more substances, e. g. alcohol and/or cannabis, on the breath (MG) of a consumer (P), using several sensors (CT1, CT2, CT3). The sensors can comprise semi-conductors or conductive pol... | 08/29/2006 |
| 7062954 | Leak detector A leak detector comprises a high vacuum envelope connected with a vacuum pump to bring the vacuum envelope to a pressure sensibly lower than ambient pressure. At least a portion of the envelope is separated from an external environment through a quartz membrane asso... | 06/20/2006 |
| 7043958 | Gas analyzer automated purge/zero process An apparatus and method for purging and zeroing an analyzer. At times, for good analysis of a gas sample or taking a live reading, the analyzer needs to be zero out and/or purge of contaminants. The analyzer can take a live reading, purge and/or zero in any order. T... | 05/16/2006 |
| 6964187 | Vacuum sensor An apparatus and method for measuring the vapor or gas content of a vacuum chamber (1) by a vapor sensor (21) located in the fore-line of a vacuum system is provide. The gas or vapor content is determined by first providing a zero condition for the sen... | 11/15/2005 |
| 6960290 | Testing and calibration device for an oxygen probe evaluation circuit and method of use of the device A testing and calibrating device for an evaluation circuit of a linear oxygen probe (S) of an internal combustion engine is disclosed. Said device comprises a probe equivalent circuit (SES) having the same terminals (Vs+, Vs−/Vp−, Vp+ and Rc) as the oxygen probe... | 11/01/2005 |
| 6939037 | Determining the temperature of an exhaust gas sensor by means of calibrated internal resistance measurement For achieving a highest possible measuring accuracy of a circuit for measuring the internal resistance of an exhaust-gas sensor, a method and a circuit for measuring the internal resistance R1 (10) of an electrochemical cell (12) are provided fo... | 09/06/2005 |
| 6675629 | Method of and instrument for analyzing a gas An instrument provides a quantitative measurement of an analyte in a gas. It includes a detection cell that provides an indication of an amount of analyte present in the gas, and a valve having a closed position, a sample gas position, and a calibration g... | 01/13/2004 |
| 6568240 | Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine The present invention provides a method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine, featuring in that before the fuel-vaporized gas purged from the canister enters into the ... | 05/27/2003 |
| 6330819 | Method and apparatus for calibrating a dissolved oxygen analyzer A method and an apparatus for calibrating a dissolved oxygen analyzer are disclosed. In the method, a zero point is first determined and set on the analyzer by filling into the analyzer a saturated aqueous solution of an oxidizer that contains 0 ppb oxyge... | 12/18/2001 |
| 6279372 | Method of correcting the characteristic curve of a linear lambda probe In order to correct the characteristic of a linear lambda probe which is arranged in an emission control system of an internal combustion engine upstream of a catalytic converter, in an overrun fuel cut-off phase the throttle valve and/or at least one gas... | 08/28/2001 |
| 6205989 | Control device for air-fuel radio sensor A control device for an air-fuel ratio sensor for detecting, from an oxygen concentration detecting device, a current corresponding to a concentration of oxygen contained in a gas by applying a voltage to the oxygen concentration detecting device. The con... | 03/27/2001 |
| 6203502 | Respiratory function monitor A respiratory function monitoring device comprising a flow sensor and a conversion device is herein disclosed. Also disclosed are structures for carrying out an auto-zero calibration, a purging function, and temperature compensation. Methods for implement... | 03/20/2001 |
| 6192310 | Device and method for diagnosing the condition of a probe upstream from a catalytic converter An apparatus and method for diagnosing the condition of a sensor in an internal combustion engine upstream from the catalytic converter. The diagnosis utilizes a signal from a second non-linear probe downstream from the catalytic converter. This signal is... | 02/20/2001 |
| 6155096 | Light transmission type powder and granular material measuring apparatus A light transmission powder and granular material measuring apparatus for a continuous production line assembly is provided. A conduit line is capable of being connected to the production line to provide an alternative flow path for the powder and/or gran... | 12/05/2000 |
| 5980834 | Sample storage devices A sample storage device comprises a vial provided with an opening, a permion tube arranged within the vial, permeable to a fluid contained in the vial or the permeation tube, and having a first closed end and an opposite second end, and a septum closure ... | 11/09/1999 |
| 5942672 | Automated particle monitor operation for a thin film process A method of calibrating a particle monitor prior to applying DC power to a cathode in the processing chamber by first, initiating a flow of gas to the processing chamber. Next, the operation of the particle monitor is initiated to obtain a particle count ... | 08/24/1999 |
| 5859356 | Multisample dynamic headspace sampler Method and apparatus for collecting a large number of outgas samples at the same time. Specimens to be tested for outgassing are placed in throw-away widemouth bottles, and the bottles are placed in cups provide in a heating block. A custom made cap is fa... | 01/12/1999 |
| 5847261 | Polarity discriminating method and signal processing circuit for a vapor sensor in a microwave oven A polarity discriminating method and signal processing circuit for a vapor sensor in a microwave oven is disclosed. The control section operates a fan motor so as to discriminate the polarity of a detecting signal supplied from the vapor sensor, which is ... | 12/08/1998 |
| 5804695 | Gas dividing method and apparatus A gas dividing and blending system including a gas divider for generating a mid-span gas for more than one analyzer at the same time so that the analyzers can run their mid-span checks at the same time. A mid-span gas is generated using the span gases for... | 09/08/1998 |
| 5761952 | Electrochemical gas sensor An electrochemical gas sensor having a housing in which components of the sensor are mounted. A number of electrical connectors are secured to the housing and coupled to respective sensor components enabling the sensor to be connected to a sensor monitori... | 06/09/1998 |
| 5753508 | Method of testing a function of a detector at an inspection station and apparatus therefor In a method of testing a function of at least one detector at an inspection station (S) for containers, particularly in an inspection unit (R) for multi-trip bottles, a test gas is fed from a source (10) to the inspection station, or as the case may be to... | 05/19/1998 |
