Matches 1 - 50 out of 213 1 2 3 4 5 >


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US20130111969 METHODS FOR RETROFITTING NATURAL GAS METERS  
Disclosed are methods for diagnosing poor performance of natural gas meter stations which utilize tube bundle flow conditioners upstream of orifice plates and methods for retrofitting the natural...
US20130239647 Method and System to Amplify and Measure Breath Analytes  
A method of avoiding a contaminant which would skew an analyte result in a breath analysis method and of calibrating subject of the breath analysis includes, immediately before the breath analysis...
US20150204814 FAULT SIMULATOR FOR CHECKING THE DIAGNOSIS IMPLEMENTED IN A CONTROL DEVICE FOR A LAMBDA SENSOR IN AN INTERNAL COMBUSTION ENGINE  
A method for checking fault detection of a control device of an internal combustion engine for malfunction of a connected broadband lambda probe, including checking with a fault simulator between...
US20140144204 GAS DETECTION MANAGEMENT SYSTEM WITH REPLACEMENT MODULES  
A calibration system is provided that supports a plurality of multi-gas detectors and that includes additional options for delivering additional test gases to the detectors. The system can include...
US20150233879 Systems And Methods For Compensating Long Term Sensitivity Drift Of Electrochemical Gas Sensors Exposed To Nitric Oxide  
Described are systems and methods for compensating long term sensitivity drift of catalytic type electrochemical gas sensors used in systems for delivering therapeutic nitric oxide (NO) gas to a...
US20150020569 TEST STATION FOR PORTABLE GAS MEASURING DEVICES  
A test station for a plurality of test gases, includes a main unit (10) with a control (12) and test modules (20), each for a gas measurement device, that exchange data to register a type of gas...
US20120293183 METHOD AND CONTROL UNIT FOR MONITORING CABLE FAULTS ON A BROADBAND LAMBDA PROBE  
A method for identifying cable faults at the terminals of a broadband lambda probe comprising a Nernst cell and a pump cell in the exhaust gas duct of an internal combustion engine. The broadband...
US20110077908 Method for Diagnosing the Functional Reliability of a Lambda Probe  
In the change from lean to rich exhaust gas or vice versa, signals are recorded by a lambda probe and are used to diagnose the functional reliability of this lambda probe So that special...
US20110203346 COMPREHENSIVE TWO-DIMENSIONAL GAS CHROMATOGRAPHY  
The invention provides a manual or automated method for eliminating or minimizing retention time shifts in comprehensive two-dimensional gas chromatography (abbreviated GCxGC). Under nominal...
US20130276508 CALIBRATION VIAL AND TECHNIQUE FOR CALIBRATING A FIBER OPTIC OXYGEN SENSING NEEDLE  
A calibration tool and method of using the tool to calibrate a fiber optic needle oxygen sensor. The tool includes at least a vial sealingly covered by a septa and containing a supply of...
US20120216593 ELECTRONIC CHEMICAL TRACE DETECTOR  
A hotplate chemical trace detector comprising a heatable conducting plate with a heater element having a predetermined temperature-power characteristic. A balancing circuit comprises an adjustable...
US20110120206 METHODS OF CALIBRATING A SENSOR IN A PATIENT MONITORING SYSTEM  
The present application discloses a number of methods of calibrating a sensor for measuring an analyte in a patient monitoring system. In a first embodiment, the method comprises calculating a...
US20140121948 HUMIDITY CORRECTIONS FOR FUEL SETPOINT ADAPTATION  
A method for adjusting an oxygen sensor measurement within an exhaust gas feedstream output from an internal combustion engine based on humidity includes monitoring relative humidity of ambient...
US20130292264 TEST STRIP AND METHOD FOR HUMIDITY DETECTION  
The present invention related to a test strip and a method for humidity detection. The test strip comprises two humidity detecting materials for detecting humidity change and one of the humidity...
US20130192332 SENSOR INTERROGATION  
A method of operating a sensor system including at least one sensor for detecting an analyte gas and a control system includes electronically interrogating the sensor to determine the operational...
US20140007644 METHOD AND DEVICE FOR CORRECTING A CHARACTERISTIC CURVE OF A TWO-STEP LAMBDA OXYGEN SENSOR  
A method and device for correcting a voltage-lambda characteristic curve of a two-step lambda oxygen sensor in an exhaust tract relative to a reference-voltage lambda characteristic curve of the...
US20140316672 HUMIDITY SENSOR AND ENGINE SYSTEM  
Methods and systems are provided for an engine coupled temperature-based humidity sensor. Degradation of the humidity sensor may be determined while flowing gasses into an engine intake air...
US20120227461 SIMPLE EQUILIBRIUM DISTRIBUTION SAMPLING DEVICE FOR GC-MS CALIBRATION  
A system for providing standard mixtures of volatile and semi-volatile organic compounds for simultaneous CC and MS calibration in a calibration vial, wherein calibration mixtures are prepared by...
US20150047411 Method for Monitoring a Broadband Lambda Probe  
A method for determining a polarization of a pump cell and/or a Nernst cell of a lambda probe for the diagnosis of the broadband lambda probe. A voltage or current pulse is applied to the...
US20140230518 Calibration and Accuracy Check System  
Calibration and accuracy check systems for a chemical sniffer, such as a breath alcohol tester, which utilize the dispensing of droplets with determinable concentration of alcohol and/or other...
US20130156647 Calibration and Accuracy Check System  
Calibration and accuracy check systems for a chemical sniffer, such as a breath alcohol tester, which utilize the dispensing of droplets with determinable concentration of alcohol and/or other...
US20110314893 OXYGEN SENSOR CONTROLLER AND OXYGEN SENSOR CONTROL METHOD  
In control over an oxygen sensor, a temperature of the oxygen sensor, which detects a concentration of oxygen in exhaust gas from a combustion chamber in which anode off-gas of a fuel cell is...
US20150027196 METHOD FOR CORRECTING MEASURED VALUES OF A SENSOR ELEMENT  
A measured value of a sensor element is obtained during repeatedly executed measuring periods for performing different measurements and for setting different operating states, the sensor element...
US20140298880 HUMIDITY SENSOR DIAGNOSTIC METHOD USING CONDENSATION CLEARING HEATER  
A diagnostic method for a capacitive humidity sensor comprising a heater, and a capacitance-sensing element that individually indentifies heater, temperature-sensing element, or...
US20130312482 ANALYZER CALIBRATING SYSTEM AND EXHAUST GAS ANALYZING SYSTEM  
An analyzer calibrating system intended to reduce calibration time and a consumption amount of calibration gas in the case of concurrently calibrating a plurality of analyzers and includes: a...
US20150101328 METHODS AND SYSTEMS FOR AN OXYGEN SENSOR  
Methods and systems are provided for accurately learning the zero point of an intake gas oxygen sensor in varying ambient humidity conditions. The learned zero point is corrected based on an...
US20090178460 GAS AMOUNT MEASUREMENT DEVICE  
A gas amount measuring device including a vacuum container, a first pipe, an air release valve being attached to the first pipe, a second pipe, a calibration gas generator being attached to the...
US20140360245 FUNCTIONAL TEST FOR GAS SENSORS  
A gas sensor which works according to the principle of thermal conductivity is functionally tested. In the method, a calibration cycle is conducted in which a membrane of the gas sensor is...
US20140041436 BREATH ALCOHOL TESTER CALIBRATION STATION  
A breath alcohol tester calibration station provides a user-friendly system and method for calibrating a breath alcohol tester with a much lower error rate than current systems and methods for...
US20130255353 METHOD FOR EVALUATING DEGRADATION OF A PARTICULATE MATTER SENSOR AFTER AN ENGINE START  
A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions...
US20140238101 System and Method for Automatically Adjusting Gas Sensor Settings and Parameters  
An automatic sensor excitation voltage adjustment feature, a multi-range concentration feature, a single calibration feature and a barrier circuit feature. The automatic sensor excitation voltage...
US20140260510 PENTAMETHYLHEPTANE AS A PRIMARY REFERENCE STANDARD FOR CETANE NUMBER  
A composition useful as a Reference Standard for measurement of Cetane Number or for use as a standard for determining a Derived Cetane Number consists essentially of a blend of n-hexadecane and...
US20110314892 METHOD AND DEVICE FOR THE DYNAMIC MONITORING OF A LAMBDA PROBE  
A method for the dynamic monitoring of a first lambda probe arranged in an exhaust-gas duct of an internal combustion engine upstream of an exhaust-gas purification system. A period of an output...
US20130008224 METHOD FOR CALIBRATION OF A CO2 CONCENTRATION SENSOR AND A MEASURING DEVICE  
This publication discloses a method for calibrating a CO2 concentration measuring device, in which method gas concentration is measured in a room. In accordance with the invention presence of...
US20130199261 METHODS AND SYSTEMS FOR CALIBRATING CHEMICAL SENSORS  
Methods and systems for calibrating a chemical sensing system are disclosed. Detection of a substance using a first chemical sensor in a chemical sensing system may be initiated at a first time....
US20130180509 NON-INTRUSIVE EXHAUST GAS SENSOR MONITORING  
A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on characteristics...
US20110107813 Breath Test Simulator and Method  
A breath test simulator for supplying a breath test analyzer with a vapor including ethyl alcohol includes a heated thermal mass to heat an inlet passage.
US20090113982 Multi-dimensional explosive detector  
A system and methodology for the trace detection of organic explosives is described. The detector system combines a separation system, such as a gas chromatograph to separate the components of an...
US20120125076 PORTABLE METERED FLOW APPARATUS FOR CALIBRATION/BUMP TESTING  
A portable metered flow apparatus for accurately providing calibration gas from a calibration gas source to a gas monitoring instrument in order to permit calibration/bump testing of the...
US20150068270 Background Cancellation with Electronic Noses  
A method and apparatus for background cancellation for electronic noses to make automated aroma analysis practical in complex field environments. The system and methods compensate for background...
US20080006077 Near real-time air monitor having external injector and pressure based flow control  
A pressure based flow control system for an air monitor comprises a chromatograph coupled to a thermal desorption unit in a spatially fixed relationship, an automatic liquid sampler coupled to the...
US20100223975 Calibration and Accuracy Check System for a Breath Tester  
Calibration and accuracy check systems for a chemical sniffer, such as a breath alcohol tester, which utilize the dispensing of droplets with determinable concentration of alcohol and/or other...
US20130180510 NON-INTRUSIVE EXHAUST GAS SENSOR MONITORING  
A method of monitoring an exhaust gas sensor coupled in an engine exhaust is provided. The method comprises indicating exhaust gas sensor degradation based on a difference between a first set of...
US20130269410 Detector Housing  
A duct detector housing includes a housing cover and a housing body defining a midline between the center of a detector and a printed circuit board within said body. Gas inlet and outlets are off...
US20110138874 OUTPUT CALIBRATION APPARATUS AND OUTPUT CALIBRATION METHOD FOR NOx SENSOR  
An output calibration apparatus for an NOx sensor according to the present invention includes a urea addition valve provided in an exhaust passage in an internal combustion engine to allow urea to...
US20080156065 Fuel composition sensing systems and methods using EMF wave propagation  
A flex fuel sensor is deployed in conjunction with the fuel transfer line (e.g. around a plastic fuel line) or at the bottom/side of a fuel tank. An RF signal of a constant frequency may be...
US20090308134 TEST EQUIPMENT FOR TESTING HAZARD DETECTORS  
Apparatus for testing a hazard detector, the apparatus comprising electrically-powered generating means arranged to generate at least two stimuli for application to the detector; and control means...
US20120291517 PRE-CALIBRATED REPLACEABLE SENSOR MODULE FOR A BREATH ALCOHOL TESTING DEVICE  
The present invention describes a replaceable breath alcohol sensor module that can be replaced with a new pre-calibrated breath alcohol sensor module or re-calibrated. The breath alcohol sensor...
US20110088446 PRE-CALIBRATED REPLACEABLE SENSOR MODULE FOR A BREATH ALCOHOL TESTING DEVICE  
The present invention describes a replaceable breath alcohol sensor module that can be replaced with a new pre-calibrated breath alcohol sensor module or re-calibrated. The breath alcohol sensor...
US20130111970 Compositions for Testing Smoke Detectors  
A composition of matter is provided for testing smoke detectors. The composition includes an oligopolymeric siloxane and a fluorinated, propene-based propellant. The composition is non-flammable...

Matches 1 - 50 out of 213 1 2 3 4 5 >