Class / Patent application number | Description | Number of patent applications / Date published |
073230210 | With compensation detail (for error or drift correction, etc.) | 23 |
20080202205 | METHOD FOR PRODUCING GAS SENSOR - A solid electrolyte body is placed on and fixed to an upper plate of a press jig such that a major surface (an upper surface) of the solid electrolyte body faces one major surface of a guide plate having a through-hole. The upper plate is rotated by a transfer mechanism to incline the solid electrolyte body in one direction, and the inclined solid electrolyte body is moved toward the other major surface of the guide plate such that a first edge of the solid electrolyte body protrudes from the through-hole. Then, a cutter is slid along the other major surface, so that the first edge is chamfered to form a first chamfered portion. | 08-28-2008 |
20090120161 | GAS SENSOR CONTROL DEVICE - A gas sensor control device for controlling a gas sensor, the gas sensor including a gas sensor element that includes a cell including a pair of electrodes and a solid electrolyte, the gas sensor control device including a circuit board connectable to the gas sensor. The circuit board has mounted thereon a voltage control unit mounted on the circuit board and configured to control a voltage developed across a pair of electrodes of the cell to a constant voltage; a temperature detecting unit mounted on the circuit board and configured to detect a temperature of the circuit board; and a voltage correcting unit mounted on the circuit board and configured to apply a correction voltage to the voltage control unit compensating for a temperature-dependent variation in the constant voltage based on the temperature detected by the temperature detecting unit. | 05-14-2009 |
20100101301 | GAS PULSE GENERATOR FOR BASELINE DRIFT CORRECTION AND RELATED SYSTEM AND METHOD - A method includes acquiring a chemical sample and modulating the chemical sample at a frequency greater than a drift frequency of a sensor. The method also includes determining at least one of a presence and a concentration of the analyte within the modulated chemical sample using the sensor. Modulating the chemical sample could include alternately absorbing at least some of the analyte into a sorbent material and releasing at least some of the analyte from the sorbent material. Modulating the chemical sample could also include heating the sorbent material, absorbing part of the analyte into the sorbent material, and passing a remaining portion of the analyte into the sensor. Modulating the chemical sample could further include stopping the heating of the sorbent material, releasing the part of the analyte from the sorbent material, and passing the sample with the released part of the analyte into the sensor. | 04-29-2010 |
20100275674 | METHODS AND APPARATUS FOR INSITU ANALYSIS OF GASES IN ELECTRONIC DEVICE FABRICATION SYSTEMS - Systems and methods are disclosed that include adjusting a pressure level of a sample gas in a testing chamber, for example, using a pressurized inert reference gas, and determining a composition of the adjusted sample gas. By adjusting the pressure level of the sample gas, the composition of the sample gas may be determined more accurately than otherwise possible. Numerous other aspects are disclosed. | 11-04-2010 |
20120006092 | METHODS AND APPARATUS FOR INSITU ANALYSIS OF GASES IN ELECTRONIC DEVICE FABRICATION SYSTEMS - Systems and methods are disclosed that include adjusting a pressure level of a sample gas in a testing chamber, for example, using a pressurized inert reference gas, and determining a composition of the adjusted sample gas. By adjusting the pressure level of the sample gas, the composition of the sample gas may be determined more accurately than otherwise possible. Numerous other aspects are disclosed. | 01-12-2012 |
20120036916 | Gas Sensing System - A gas detection system comprising a gas sensor having a detection surface for detecting an analyte gas, the accuracy of detection being degraded by the presence of an unwanted gas at the sensor, and a thermal scrubber layer directly adjacent said detection surface of the gas sensor defining a diffusion path for the analyte and unwanted gases to traverse through to the detection surface, the diffusion path having a sufficient length and the thermal scrubber being heated by the heater to a sufficient temperature capable of at least partially thermally decomposing the unwanted gas prior to contacting the detection surface to thereby improve the accuracy of the sensor. The system further comprises a heater that is preferably arranged to heat both the detection surface and the thermal scrubber. The invention is particularly useful for improving the performance of an NO | 02-16-2012 |
20120291522 | GAS SENSOR - A simple gas sensor for detecting a concentration of a detected gas with high accuracy, in which a thermal interference can hardly occur between a normal detection element pair and a reference detection element pair, is provided. | 11-22-2012 |
20130036792 | GAS SENSOR APPARATUS AND CONCENTRATION MEASUREMENT METHOD - A gas sensor apparatus ( | 02-14-2013 |
20130067988 | Gas Measuring Apparatus - A gas measuring apparatus including: a measurement unit which obtains a measurement value with respect to a predetermined parameter of a gas to be measured; an altitude acquisition unit which acquires altitude information indicating an altitude of an installation location; an air pressure calculation unit which calculates an air pressure in the installation location, based on the altitude information; and a correction unit which corrects the measurement value based on a calculation value of the air pressure. | 03-21-2013 |
20130199265 | Gas Concentration Sensor, Motor Vehicle Having A Gas Concentration Sensor, And Method For Measuring Gas Concentration - A motor vehicle having a gas concentration sensor and a method for measuring gas concentration using the gas concentration sensor the gas concentration sensor having a sound transmitter, a sound receiver and a control device by which a phase shift between the sound signal transmitted by the sound transmitter and a sound signal received by the sound receiver can be controlled to a predefinable phase shift. A change in a composition of a gas mixture can be detected by an analysis unit on the basis of a change in frequency of the sound signal relative to a frequency of a reference sound signal. | 08-08-2013 |
20140157866 | Measurement Arrangement Having Electrically Heated Resistors Arranged in Gas Paths - A measurement arrangement includes four electrically heated resistors which are arranged in gas paths and are connected to form a Wheatstone bridge, where each of two resistors which are diagonally opposite each other in the Wheatstone bridge are contained in a respective component arranged on a common heated carrier, each respective component is assigned to one heating resistor arranged near the component on the carrier, and where an unbalanced state of the Wheatstone bridge is compensated for by variably energizing the heating resistors. | 06-12-2014 |
20140345361 | Sensor Element With Air Pressure Measurement - Please replace the abstract on file with the abstract as shown on the attached replacement sheet. | 11-27-2014 |
20150040641 | PASSIVELY COOLED GAS DETECTOR - A gas detector assembly which is at least in part passively cooled comprising; a thermal chimney comprising a first heat collecting area in fluid communication with a ventilation area; a gas sensing device placed at least in part in the thermal chimney, such that in use the first heat collecting area is heated and a temperature gradient between the heat collecting area and ventilation area is established providing a passive cooling flow of gas over at least part of the gas sensing device placed in the thermal chimney. | 02-12-2015 |
20150135802 | METHOD AND CONTROL UNIT FOR COMPENSATING FOR A VOLTAGE OFFSET OF A TWO-POINT LAMBDA SENSOR - A method is described for compensating for a voltage offset in a voltage-lambda characteristic curve of a two-point lambda sensor in relation to a reference voltage-lambda characteristic curve of the two-point lambda sensor, the two-point lambda sensor being situated in an exhaust duct of an internal combustion engine. It is provided that the slope of the voltage-lambda characteristic curve is determined for an output voltage of the two-point lambda sensor and is compared to the slope of a reference voltage-lambda characteristic curve at equal output voltage, and the voltage offset is determined from a deviation of the determined slope of the voltage-lambda characteristic curve from the slope of the reference voltage-lambda characteristic curve. Also described is a control unit for carrying out the method. The method and the control unit enable the determination of and compensation for a voltage offset of a two-point lambda sensor caused by aging or manufacturing tolerances. | 05-21-2015 |
20160097706 | CONTAINMENT HOUSING WITH INTEGRATED TEST AEROSOL INJECTION AND SAMPLING - The system and method for testing a filter containment system. A containment system may include a filter housing with a diverging transition section mounted upstream and a converging transition section mounted downstream. An upstream test section can be arranged upstream of the diverging transition section. During a test of the filter, and aerosol can be dispersed substantially evenly across a cross-sectional area of the upstream test section. The downstream test section can be arranged downstream of the converging transition section. The downstream test section may optionally include a mixer that disturbs the airflow. The downstream test section can also include a sampling array, downstream of the mixer that simultaneously samples the airflow substantially evenly across the cross-sectional area of the downstream test section for the presence of aerosol. | 04-07-2016 |
20160116451 | Electrical Apparatus Oil Sampler and Conditioner for Solid State Sensors - A gas monitoring apparatus and system that provides for reliable and accurate monitoring of gaseous hydrogen and other compounds in dielectric oil. The apparatus provides an environment for and is used in conjunction with metal oxide semiconductor sensors. Thermal conditioning zones for oil provide an environment in which variations in oil temperature and ambient temperature are eliminated to insure that analytical data are not affected by these environmental conditions. | 04-28-2016 |
20160178587 | TEMPERATURE REGULATION OF GAS DETECTOR BY CO-OPERATING DUAL HEAT SINKS AND HEAT PUMP | 06-23-2016 |
20160187279 | METAL OXIDE GAS SENSOR ARRAY DEVICES, SYSTEMS, AND ASSOCIATED METHODS - Sensor devices and systems for detecting an analyte are disclosed and described. In one embodiment, a transducer array operable to detect a plurality of analytes is provided. Such an array may include a support substrate and a plurality of Metal Oxide Semiconductor (MOS) sensors coupled to the substrate. Each MOS sensor can further include a MOS active material, a plurality of heating elements thermally coupled to the MOS active materials in a position and orientation that facilitates heating of the MOS active materials, and an electrode functionally coupled to the MOS active material and operable to detect a response signal generated by the MOS active material. | 06-30-2016 |
20170234845 | PORTABLE GAS DETECTING AND MONITORING APPARATUS | 08-17-2017 |
073230220 | For gas chromatography | 3 |
20100050737 | SEPARATION TECHNOLOGY METHOD AND IDENTIFICATION OF ERROR - The present invention relates to a method and accompanying device for separating a known or unknown sample into one or more subsamples. By comparing the subsample's measurement profile data to the sample measurement profile data, the performance of the separation can be determined. The separation could be chromatography [such as high-performance liquid chromatography (HPLC), gas chromatography (GC), or the like], electrophoresis [such as capillary electrophoresis (CE) or the like], or another separation technique. The measurement profile data could be ultraviolet/visible (UV/Vis) spectra, mass spectra (MS), or another measurement technique. | 03-04-2010 |
073230250 | Temperature | 1 |
20140157867 | GAS CHROMATOGRAPHY CHIP AND MULTI-LAYERED GAS CHROMATOGRAPHY CHIP ASSEMBLY THEREOF - Disclosed is a gas chromatography chip including: a substrate having an upper substrate and a lower substrate; a gas supply connecting part formed on one plane of one surface of the substrate or on one plane of an opposite surface of the substrate; a gas discharge connecting part formed another plane of the one surface of the substrate or on another plane of the opposite surface of the substrate; a micro channel continuously extending from the gas supply connecting part to the gas discharge connecting part to form a micro channel part and having a circular cross-section; at least two position alignment markers formed on one surface or an opposite surface of the opposite surfaces of the substrate; and a heat transfer part and a temperature control unit for controlling a temperature of the substrate. | 06-12-2014 |
073230270 | Pressure | 1 |
20100139363 | System For Integrated Backflush In A Gas Chromatograph - A detector in a gas chromatograph includes a detector inlet configured to receive a chromatographic column, the chromatographic column having a column entrance and a column exit, the column exit coupled to the detector inlet, a restriction integrated within the detector, the restriction located to receive an output of the chromatographic column, at least one pressure regulated gas source provided for normal gas chromatograph operation and arranged to provide at least one gas to a location between the integrated restriction and the column exit, and a backflush controller coupled to the pressure regulated gas source, the backflush controller configured to control a pressure differential between the column exit and the column entrance such that the at least one gas backflushes the chromatographic column when a pressure at the column exit exceeds a pressure at the column entrance. | 06-10-2010 |
073230280 | For density or specific gravity | 1 |
073230290 | Pressure | 1 |
20090113988 | Mitigation of gas memory effects in gas analysis - The gas absorption/adsorption memory effect in gas analysis can be reduced by controlling gas flow conditions such that the partial pressure of the analyte of interest is held constant, if the measured analyte concentration is within a predetermined range. Keeping the analyte partial pressure constant is helpful for mitigating the memory effect because changes in analyte absorption/adsorption rates tend to be driven by changes in analyte partial pressure. The memory effect can also be mitigated by performing concentration measurements at two or more different gas flow conditions, and employing a mathematical model to estimate true concentration and “memory effect” contributions to measured concentrations at one or more of the flow conditions. The mathematical model can be based on an assumption that the true analyte concentration is independent of flow rate or pressure, while the “memory effect” contribution to measured concentration is inversely proportional to flow rate or pressure. | 05-07-2009 |