Entries |
Document | Title | Date |
20080202195 | GOLD NANOPARTICLE-BASED pH SENSOR IN HIGHLY ALKALINE REGION BY SURFACE-ENHANCED RAMAN SCATTERING STUDY - Disclosed are a pH sensor for use in a highly alkaline region of pH >11 comprising citrate-reduced gold nanoparticles and a method for calibrating pH of a solution in highly alkaline regions, based on variation in surface-enhanced Raman scattering spectra (SERS). | 08-28-2008 |
20090038369 | MICROWAVE SYSTEM GENERATOR AND CONTROLLER FOR GAS AND LIQUID CHROMATOGRAPHY AND METHODS FOR MAKING AND USING SAME - A solid state, radiant energy power generator and control system for heating an object in a radiant energy cavity—a radiant energy heated oven—is disclosed, where the system includes a digital processing unit (DPU), an DPU interface, a device controller, a frequency regulator, a voltage control oscillator, a power regulator, an amplifier, and a reverse/forward power sensing means. | 02-12-2009 |
20090071225 | Systems, Storage Mediums, and Methods for Identifying Particles in Flow - Methods, storage mediums, and systems for correlating pulses generated from multiple interrogation regions in a flow cytometer to particular particles flowing through the flow cytometer are provided. Embodiments of the methods, storage mediums, and systems include configurations for calibrating a flow cytometer using a calibration particle having a unique signature to determine a time-of-flight for particles flowing through the flow cytometer. Based on the calculated time-of-flight and relative positions of interrogation regions corresponding to collectors of the flow cytometer, the methods, storage mediums, and systems may further include configurations for associating other signal pulses to particles of one or more different particle sets. | 03-19-2009 |
20090113981 | AUTO-CALIBRATING TEST SENSORS - An electrochemical test sensor configured to determine an analyte concentration of a fluid sample comprises a base including a first end, a second opposing end, a first side and a second side bridging the first and second opposing ends. The test sensor further comprises a plurality of electrodes formed on the base at or near the first end. The plurality of electrodes includes a working electrode and a counter electrode. The sensor further comprises a first test-sensor contact formed on the base at or near the second opposing end and coupled to the working electrode by a first conductive lead. The sensor further comprises a second test-sensor contact formed on the base at or near the second opposing end and coupled to the counter electrode by a second conductive lead. The positions of the first and second test-sensor contacts correspond with calibration information assigned to the test sensor. | 05-07-2009 |
20090120157 | Method for Calibrating Machines for the Analysis of Characteristic Parameters of the Blood Connected To Its Density, Such as Erythrocyte Sedimentation Rate and/or Red Corpuscles Aggregation Rate - A method for calibrating machines suitable to effect an analysis of a blood sample by means of measuring the erythrocyte sedimentation rate (ESR) and/or aggregation of the red corpuscles, wherein said measurement is effected by exploiting the optical density kinetics obtained from the measurement of the variation in the optical density of the blood sample in an interval of time, comprises a measuring step in which, by means of the same machine with which the measurement of the optical density is effected on said blood sample, a measurement is effected of the optical density of two latexes, or turbidimetric samples. Each of the two latexes has a known optical density, reproducible, measurable and different from each other. The method also comprises a comparison step, in which the difference is calculated between the values of optical density of the latexes as obtained from the measurement performed by the machine and the known values of optical density, to allow to determine at least one correction factor usable to calibrate said machine. | 05-14-2009 |
20090126454 | Method of Measuring a Target Gas at Low Concentration - A method for determining the concentration of a target gas in an environment which utilises a metal oxide gas sensor having a sensitivity to a background stimulus present in the environment, said sensitivity being variable according to the concentration of the target gas, comprises the following steps:
| 05-21-2009 |
20090178459 | ANALYTE SENSOR - Systems and methods of use for continuous analyte measurement of a host's vascular system are provided. In some embodiments, a continuous glucose measurement system includes a vascular access device, a sensor and sensor electronics, the system being configured for insertion into communication with a host's circulatory system. | 07-16-2009 |
20090188296 | METHOD AND APPARATUS FOR TESTING SMOKE AND FIRE DETECTORS - An apparatus for the testing of a smoke or fire detector; said apparatus comprising an emitter of an alarm activating material and an alarm activating material confining housing; said emitter and said housing interconnected by a flexible conduit; and wherein said housing is adapted to substantially enclose said smoke or fire detector such that said alarm activating material is brought into contact with said smoke or fire detector. | 07-30-2009 |
20090205398 | Self Calibration Devices for Chemical and Bio analytical Trace Detection Systems - The present invention relates to chemical and bioanalytical sensors and sensor systems, particularly to systems incorporating a calibration device for sensors where the calibration device is composed of structures and materials for trapping and retaining calibrant materials until they are needed and released quantitatively. | 08-20-2009 |
20090205399 | AUTO-CALIBRATING TEST SENSORS - A method of making a test sensor configured to assist in determining information related to an analyte in a fluid sample is disclosed. The method comprises the act of providing a base having a first end and a second opposing end. The method further comprises the act of providing a fluid-receiving area configured to receive a fluid sample. The method further comprises the act of assigning calibration information to the test sensor. The method further comprises the act of forming at least one notch such that a depth of the notch corresponds to the calibration information. | 08-20-2009 |
20090277242 | Sensor Calibration - A sensor kit comprising a sensor for detecting an analyte, a sensor housing and a calibration chamber. The calibration chamber comprises a first compartment containing a first calibration solution and a second compartment containing a source of the analyte to be detected. A dividing material is located between the first and second compartments enabling them to be mixed on breakage or removal of the dividing material. Further compartment(s) containing further source(s) of the analyte may optionally be provided. Calibration can carried out by (a) taking a reading of the analyte concentration of the first calibration solution, (b) mixing the contents of the first and second compartments by breaking or removing the dividing material, and (c) taking a reading of the analyte concentration of the resulting mixture. Steps (b) and (c) can be repeated for further compartment(s) to provide further reading(s) if desired. | 11-12-2009 |
20090301166 | AUTO-CALIBRATION CIRCUIT OR LABEL AND METHOD OF FORMING THE SAME - An auto-calibration circuit or label is adapted to be used with an instrument. The instrument is adapted to determine information related to an analyte of a fluid sample. The auto-calibration circuit or label comprises a plurality of electrical connections, first and second common connections, and first and second auxiliary common connections. The electrical connections convey auto-calibration information corresponding to a test sensor. The auto-calibration information is adapted to be utilized by the instrument to auto-calibrate for the test sensor. The electrical connections include first contact areas. The second common connection is separate and distinct from the first common connection. The first auxiliary common connection is separate and distinct from the first and second common connections. The second auxiliary common connection is separate and distinct from the first and second common connections. The first and second auxiliary common connections are located on opposing sides of the contact areas. The electrical connections are adapted to be routed directly from each of the plurality of first contact areas to a respective first or a second common connection. | 12-10-2009 |
20100005850 | CALIBRATION METHODS FOR BLOOD CONTENT SENSORS - Methods for calibrating blood content sensors used independently or in conjunction with medical instruments such as traditional or capsule type endoscopes. | 01-14-2010 |
20100064764 | Method and System for Providing Calibration of an Analyte Sensor in an Analyte Monitoring System - Method and apparatus for providing calibration of analyte sensor including applying a control signal, detecting a measured response to the control signal, determining a variance in the detected measured response, and estimating a sensor sensitivity based on the variance in the detected measured response is provided | 03-18-2010 |
20100083730 | MULTI-SENSING DEVICE AND METHOD OF OPERATING - A multi-sensing device is provided which includes a first sensor for sensing a temperature of the fluid flowing through the filter element, a second sensor for sensing a pressure generated by the fluid flowing through the filter element; and an indicator for indicating a condition of the filter system, and a microcontroller operatively coupled to the first and second sensors. The microcontroller executes instructions for receiving temperature data from the first sensor and pressure data from the second sensor; if the temperature data does not exceed a first temperature threshold, monitoring subsequent temperature data received from the first sensor until it exceeds the first temperature threshold; and if the temperature data exceeds the first temperature threshold: determining whether the temperature data exceeds a second temperature threshold and whether the pressure data exceeds a pressure threshold; if the temperature data exceeds the second temperature threshold, activating the indicator to indicate that the fluid is in an abnormal condition; and if the pressure data exceeds the pressure threshold, activating the indicator to indicate that the filter element is in a condemned condition. | 04-08-2010 |
20100116016 | DETECTOR FOR CHROMATOGRAPH AND METHOD FOR ADJUSTING THE SAME - The present invention provides a detector for a chromatograph capable of obtaining the accurate retention time, even if there is a frequency deviation of the clock signal for determining the timing of data sampling, by conforming the progress of the detector internal time accompanied with the repetition of the sampling to that of real time. In the detector, consecutive data sampling intervals are defined to be a time adjustment period, and in one time adjustment period, each of the sampling intervals whose number is given as the interpolation value M is elongated by a predetermined number of clock counts compared to each of the other sampling intervals. If the clock signal has a positive frequency deviation, the apparatus internal time determined by the clock signal progresses faster than real time. However, providing the interpolation value M corresponding to the amount of the frequency deviation elongates the time adjustment period on the basis of the apparatus internal time, to be conformed to the time adjustment period on the basis of real time which is determined by the sampling period. | 05-13-2010 |
20100162786 | SYSTEM AND/OR METHOD FOR GLUCOSE SENSOR CALIBRATION - The subject matter disclosed herein relates to systems, methods and/or devices for calibrating sensor data to be used in estimating a blood glucose concentration. A relationship between sensor measurements and reference readings may be used to estimate a relationship between sensor measurements and blood glucose concentration. Such sensor measurements may be weighted according to a decreasing function of uncertainty associated with sensor values. | 07-01-2010 |
20100175455 | METHODS AND MATERIALS FOR CALIBRATION OF A READER - The present disclosure relates generally to devices that may be used to calibrate a reader. Such devices may comprise an electrical memory chip, a calibration device comprising an optical check, and an interface that allows interaction with the reader. | 07-15-2010 |
20100180663 | Sensor and method for detecting oil deterioration and oil level - A capacitive sensor in its simplest form has three identical plated spatial electrodes, which are positioned equally spaced apart, in order, alignment and parallel with each other. The first and third electrodes are the outer electrodes and connected in parallel by a first lead wire serving as a first electrical pole to be a group of the integrated electrodes. The second electrode is the middle electrode and connected by a second lead wire serving as a second electrical pole. The sensor is applied by an alternating current (AC) excitation by an AC device. The present invention method includes application of referencing and sensing capacitive sensors to obtain a measured temperature compensated electrical property of the oil to thereby obtain a measured remaining usage so as to a predicted one for the oil. Therefore, the respective top oil level, or the normal or the abnormal oil deterioration can be concluded according to the measured remaining usage which is respectively larger than, or similar to, or less than the predicted one for the oil. | 07-22-2010 |
20100218585 | Multi-dimentional high performance liquid chromatographic separation technique (STAR7) for quantitative determinations of 7 fractions in heavy petroleum streams boiling above 550 degrees F - The present invention provides quantitation of seven classes of compounds (saturates, 1-4+ ring aromatics, sulfides, and polars) present in petroleum streams boiling from 550-1050° F. Operating the present invention in the preparative mode will allow us to load and collect multi-milligram amounts of material. In the present invention, all seven fractions are produced in a single run, whereas the most commonly used preparative liquid chromatographic separations requires two or more large scale separations to generate similar fractions. The present invention uses 100 times less solvent. The present invention protocol provides a quicker and cheaper alternative to most commonly used preparative liquid chromatographic separations and is flexible enough to target many refining and chemicals problems. | 09-02-2010 |
20100229623 | DOWNHOLE DETERMINATION OF ASPHALTENE CONTENT - A system and method for determining the asphaltene content of a downhole oil sample are provided. In one example, the method includes obtaining a hydrocarbon sample from a hydrocarbon formation of a reservoir at a given depth using a downhole tool. A liquid phase of the hydrocarbon sample is isolated within the downhole tool and the liquid phase is subjected to downhole analysis within the downhole tool to create a chromatography sample. The downhole analysis is based at least partially on size exclusion chromatography. A first property of the chromatography sample is measured to obtain a measured value, and a second property of the chromatography sample is estimated based on the measured value and known calibration curves. | 09-16-2010 |
20110011151 | Auto-Calibration Circuit For Analyte Measurement - Embodiments provide expanded ability to communicate calibration information to diagnostic systems for determining a characteristic of a test sample. An example system for determining a characteristic of a test sample includes: a test sensor for receiving a test sample; a sensor meter responsive to the test sensor, the sensor meter determining a characteristic of the test sample received on the test sensor; and a calibration element including electrical contacts readable by the sensor meter. The electrical contacts are configurable in one of a plurality of patterns that communicates, to the sensor meter, information relating to the determination of the characteristic of the test sample. The plurality of patterns include two or more of the electrical contacts that are electrically isolated from any other electrical contacts. The sensor meter determines at least partially the information from the electrical contacts by determining a combination of values corresponding to the isolated electrical contacts. | 01-20-2011 |
20110056264 | ADDITIONAL CALIBRATION FOR ANALYTE MONITOR - Embodiments provide a method and related systems that take into account the difference between a measured glucose value and the calibration level and the amount of elapsed time since the prior calibration. As one or both of these determined differences increases, the desirability of an additional calibration also increases. The methodology described herein thus analyzes the combination of change in glucose level as well as the time since the prior calibration. If the combination exceeds a predetermined value, the system recommends, but does not require, that the subject user perform an additional calibration. | 03-10-2011 |
20110107812 | RATIONALITY DIAGNOSIS METHOD AND RATIONALITY DIAGNOSIS APPARATUS FOR SENSOR INSIDE TANK - A rationality diagnosis method and a rationality diagnosis apparatus for a sensor inside a tank are provided. The rationality diagnosis method and the rationality diagnosis apparatus can accurately and easily perform a diagnosis to determine whether rationality of all sensors is maintained. | 05-12-2011 |
20110154879 | Systems and Methods for Monitoring a Solid-Liquid Interface - Systems and methods are provided for monitoring a solid-liquid interface during a casting process. The systems and methods enable determination of the location of a solid-liquid interface during the casting process. | 06-30-2011 |
20110232356 | Electrophoretic Analysis System Having In-Situ Calibration - An electrophoretic system having a plurality of separation lanes is provided with an automatic calibration feature in which each lane is separately calibrated. For each lane, the calibration coefficients map a spectrum of received channel intensities onto values reflective of the relative likelihood of each of a plurality of dyes being present. Individual peaks, reflective of the influence of a single dye, are isolated from among the various sets of detected light intensity spectra, and these can be used to both detect the number of dye components present, and also to establish exemplary vectors for the calibration coefficients which may then be clustered and further processed to arrive at a calibration matrix for the system. The system thus permits one to use different dye sets to tag DNA nucleotides in samples which migrate in separate lanes, and also allows for in-situ calibration with new, previously unused dye sets. | 09-29-2011 |
20110265548 | Underfill Detection System For A Biosensor - A biosensor has an underfill detection system that determines whether a sample of a biological fluid is large enough for an analysis of one or more analytes. The underfill detection system applies an excitation signal to the sample, which generates an output signal in response to the excitation signal. The underfill detection system switches the amplitude of the excitation signal. The transition of the excitation signal to a different amplitude changes the output signal when the sample is not large enough for an accurate and/or precise analysis. The underfill detection system measures and compares the output signal with one or more underfill thresholds to determine whether an underfill condition exists. | 11-03-2011 |
20120096918 | GLUCOSE SENSOR CALIBRATION - A method of calibrating a glucose sensor, which method comprises:
| 04-26-2012 |
20120096919 | LIQUID CHROMATOGRAPHY ADJUSTMENT FOR METHOD-CONFORMALLY COMPENSATING DEVIATIONS FROM IDEAL BEHAVIOR - A liquid chromatography device ( | 04-26-2012 |
20120125075 | DETERMINATION AND APPLICATION OF GLUCOSE SENSOR RELIABILITY INDICATOR AND/OR METRIC - Disclosed are a system and method for determining a metric and/or indicator of a reliability of a blood glucose sensor in providing glucose measurements. In one aspect, the metric and/or indicator may be computed based, at least in part, on an observed trend associated with signals generated by the blood glucose sensor. | 05-24-2012 |
20120304729 | MULTI-ANALYTE DETECTION SYSTEM AND METHOD - The invention provides for a multiple analyte detector that is capable of detecting and identifying explosive, chemical or biological substances having multiple analytes with a single system having multiple reporters. The reporters include fluorescent polymers, conducting polymers, metal oxide elements electrochemical cells, etc. The reporters may be combinations of other reporters that are optimized for broadband detection. | 12-06-2012 |
20130000376 | OIL DEBRIS MONITOR VERIFICATION DRY RIG - An assembly includes a debris monitor mount, a motor, and a particle belt. The particle belt carries one or more metallic particles. The particle belt is driven by the motor. The particle belt extends proximate the debris monitor mount when driven by the motor. | 01-03-2013 |
20130014556 | METHOD FOR CALIBRATING OR TESTING A DETECTOR SURFACE OF A DEVICE FOR DETECTING HYDROMETEORS AND A CALIBRATION AND TESTING DEVICEAANM Salmi; AtteAACI PorvooAACO FIAAGP Salmi; Atte Porvoo FI - The invention relates to a method and device for calibrating or testing the detector surface ( | 01-17-2013 |
20130019651 | ABNORMALITY DETECTION APPARATUS FOR FUEL PROPERTY DETECTION APPARATUS - An object of the present invention is to accurately diagnose an abnormality of a fuel property detection apparatus that detects a fuel property based on a capacitance between electrodes. The abnormality detection apparatus for a fuel property detection apparatus of the present invention detects an abnormality of a fuel property detection apparatus that detects a fuel property based on a measurement value of a capacitance between a pair of electrodes installed on a fuel supply channel of an internal combustion engine that can use a fuel that includes a predetermined fuel component that has a characteristic such that a permittivity thereof changes according to a frequency of an electric field. The abnormality detection apparatus for a fuel property detection apparatus includes frequency switching means that switches a frequency of an alternating voltage applied between both electrodes to a plurality of frequencies, measuring means that measures a capacitance at each of the plurality of frequencies, storing means that stores frequency characteristics information that is information relating to a relationship between a fuel property and frequency characteristics of capacitances when the fuel property detection apparatus is normal, and diagnosing means that diagnoses an abnormality of the fuel property detection apparatus based on a measurement result of the measuring means and the frequency characteristics information. | 01-24-2013 |
20130081441 | Analyte Testing Systems - The present invention includes analyte measurement systems, analyte measurement meters, analyte testing devices, cartridges thereof and integrated circuits for use therewith, and further includes methods related to the use of the integrated circuits and, in certain embodiments, to the counting or tracking of parameters related to the cartridges and analyte test devices. | 04-04-2013 |
20130111968 | SAMPLE ANALYSIS DEVICE FOR DETERMINING SAMPLES IN A SAMPLE MATRIX AND METHOD FOR DETERMINING SAMPLES IN ONE OR SEVERAL MATRICES - A sample analysis device is provided for determining samples in a sample matrix with several sample volumes. The device includes: a receiving device with a receiving facility for a sample matrix comprising a plurality of sample volumes; a first measuring device configured to determine samples in the sample matrix, by means of wet measuring; a second measuring device, configured to determine further samples in the sample matrix, which further samples differ from the samples, or in another sample matrix, by means of dry measuring; and a transfer device, which is coupled to the receiving device and is configured to transfer the receiving device between a loading position and a plurality of measuring positions in such a manner that the receiving facility can be transferred to various measuring positions that are either associated with the first or with the second measuring device. | 05-09-2013 |
20130213110 | CONTROL OF BIOFOULING IN IMPLANTABLE BIOSENSORS - Disclosed herein is a device comprising a biosensor having disposed upon it a coating; the coating comprising a polymer matrix; where the polymer matrix is operative to facilitate the inwards and outwards diffusion of analytes and byproducts to and from the sensing element of the biosensor; and a sacrificial moiety; the sacrificial moiety being dispersed in the polymer matrix, where the sacrificial moiety erodes with time and increases the porosity of the polymer matrix thus offsetting decreases in analyte permeability as a result of biofouling. | 08-22-2013 |
20130291617 | LIQUID LEVEL AND COMPOSITION SENSING SYSTEMS AND METHODS USING EMF WAVE PROPAGATION - An automotive urea solution monitoring device is deployed in conjunction with the urea tank of a selective catalytic reduction vehicle. An RF signal of a constant frequency may be generated across a resonant circuit, which may be comprised of an inductor and a PCB trace capacitor, or the like. Electromagnetic radiation is propagated into the automotive urea solution in the urea tank. The conductivity and dielectric properties of the liquid change the impedance of the discrete/trace capacitor and or the discrete/trace inductor. These changes are proportional to ammonia content, temperature, and/or level of the automotive urea solution in the urea tank and are preferably detected by a microcontroller, or the like, and then transmitted to a selective catalytic reduction vehicle engine management system, or the like. | 11-07-2013 |
20130312481 | FLUID PROPERTIES INCLUDING EQUATION OF STATE MODELING WITH OPTICAL CONSTRAINTS - The invention relates to a method of determining an unknown property or information of a reservoir fluid. The method includes measuring a set of responses of a measuring instrument to the fluid and measuring one or more physical or chemical properties of the fluid. The method further includes determining the unknown property or information of the fluid based on the relationship between the instrument responses and the measured properties of the fluid using equation-of-state (EOS) model. | 11-28-2013 |
20130319070 | METHOD FOR VERIFYING THE PLAUSIBILITY OF A MEASURING DEVICE FOR DETERMINING THE QUALITY OF AN AQUEOUS UREA SOLUTION IN A RESERVOIR OF AN SCR CATALYST SYSTEM - A method for verifying the plausibility of a measuring device for determining a quality of an aqueous urea solution in a reservoir of an SCR catalyst system comprises determining whether a filling of the reservoir has taken place, determining the quality of the aqueous urea solution in the reservoir and detecting whether an error of the measuring device is present or whether the reservoir was filled with an aqueous urea solution, the quality of which deviates from a default value consisting of a filling status of the reservoir and the quality of the aqueous urea solution in said reservoir. | 12-05-2013 |
20130340496 | RATIONALITY DIAGNOSTIC DEVICE FOR ALCOHOL CONCENTRATION SENSOR - A rationality diagnostic device for an alcohol concentration sensor includes a capacitance-type remaining fuel amount sensor as a remaining fuel amount sensor disposed in a fuel tank. The capacitance-type remaining fuel amount sensor has such output characteristics that its output value is determined by the amount of fuel remaining in the fuel tank and the alcohol concentration of the fuel. The rationality diagnostic device corrects the output value of the remaining fuel amount sensor in accordance with the output value of the alcohol concentration sensor to eliminate an alcohol-concentration-dependent component from the output value of the remaining fuel amount sensor. The rationality diagnostic device then verifies the accuracy of the corrected output value of the remaining fuel amount sensor to judge whether the rationality of the alcohol concentration sensor is maintained. | 12-26-2013 |
20140000338 | GLUCOSE SENSOR SIGNAL STABILITY ANALYSIS | 01-02-2014 |
20140033793 | CHROMATOGRAPHIC SYSTEM QUALITY CONTROL REFERENCE MATERIALS - The invention provides compositions and methods for chromatographic analysis and system quality control. Compositions can include a reference material that comprises a standardized formulation of two or more compounds that can be used for benchmarking and troubleshooting the chromatographic system (e.g., which is not simply a standard solution for a particular analyte of interest). Methods can include obtaining a chromatogram from a reference material using a chromatographic system, wherein the reference material comprises a standardized formulation of two or more compounds that can be used for benchmarking and troubleshooting the chromatographic system; evaluating a difference between the chromatogram and a benchmark for the reference material on the chromatography system; and (i) analyzing a sample potentially comprising an analyte of interest, wherein the analyte of interest does not comprise any of the two or more compounds of the standardized formulation, or compounds substantially similar thereto, if the difference between the chromatogram and the benchmark is within a predetermined tolerance, or (ii) troubleshooting the chromatography system using the chromatogram if the difference between the chromatogram and the benchmark is not within the predetermined tolerance. | 02-06-2014 |
20140150517 | MEASUREMENT DEVICE - A measurement device includes mechanical support elements ( | 06-05-2014 |
20140157859 | CALIBRATION PROCESS AND SYSTEM - An improved calibration process for a medical testing machine. The machine automatically recognizes that a package of calibration material has been inserted into it, and performs a calibration sequence to ascertain a calibration parameter to be used in performing future tests with the medical testing machine. The calibration package may include machine-readable indicators that the package is to be used for calibration, and of a calibration setpoint of a calibration material in the package. A calibration material may be stored in a lyophilized state in the package, and the medical testing machine may automatically reconstitute the lyophilized material. | 06-12-2014 |
20140174145 | INTEGRATORS FOR SENSOR APPLICATIONS - Embodiments herein provide processing of sensor signals (e.g., signals representative of a level of an analyte in a body). An electronics assembly may include a sensor contact configured to receive a sensor signal from a sensor assembly, an integrator circuit configured to provide an integrator output signal representative of the sensor signal integrated from a first time to a second time, and a reset circuit configured to reset the integrator output signal in response to a reset signal. The electronics assembly may also include a processor circuit configured to determine a value of the integrator output signal and to provide the reset signal to the reset circuit when an integration interval has elapsed from the first time. The integration interval may be based at least in part on the integrator output signal. | 06-26-2014 |
20140182350 | END OF LIFE DETECTION FOR ANALYTE SENSORS - Systems and methods for processing sensor data and end of life detection are provided. In some embodiments, a method for determining the end of life of a continuous analyte sensor includes evaluating a plurality of risk factors using an end of life function to determine an end of life status of the sensor and providing an output related to the end of life status of the sensor. The plurality of risk factors may be selected from the list including the number of days the sensor has been in use, whether there has been a decrease in signal sensitivity, whether there is a predetermined noise pattern, whether there is a predetermined oxygen concentration pattern, and error between reference BG values and EGV sensor values. | 07-03-2014 |
20140230517 | QUALITY CONTROL REAGENTS AND METHODS - The present invention provides reagents for instrumentation quality control and methods of use thereof. In particular, sets of peptides or other molecules are provided for evaluating the performance of instruments with mass spectrometry (MS) and/or liquid chromatography (LC) functionalities. | 08-21-2014 |
20140260509 | METHOD OF CALIBRATING A CHROMATOGRAPHY SYSTEM - A method of calibrating, a chromatography system is described. The method includes injecting a standard into a chromatographic separator. The standard including a first analyte having a first calibrant concentration and a second analyte having a second calibrant concentration. The standard can be separated in the chromatographic separator and measured with a detector. The method automatically identifies whether the first peak corresponds to the first analyte or the second analyte and whether the second peak corresponds to the first analyte or the second analyte, based on either an area or a peak height of the first peak and the second peak, and a ratio based on the first calibrant concentration and the second calibrant concentration. | 09-18-2014 |
20140352397 | Optical Fluid Analyzer with Calibrator and Method of Using Same - A fluid analyzer for a downhole tool positionable in a wellbore penetrating a subterranean formation is provided. The fluid analyzer includes an optical sensor positioned in the downhole tool to receive a downhole fluid therefrom. The optical sensor includes an optical cell to measure properties of the downhole fluid in a flowline of the downhole tool, and has a wavelength range. The fluid analyzer also includes a calibration fluid having a liquid that absorbs outside of the wavelength range, and a calibrator. The calibrator includes a fluid source housing the calibration fluid and at least one valve. The fluid source is operatively connectable to the optical sensor to provide the calibration fluid thereto whereby the calibration fluid is measureable by and calibratable to the optical sensor and. | 12-04-2014 |
20150007631 | SENSOR CONDITIONING APPARATUS, SYSTEMS, AND METHODS - In some embodiments, an apparatus and a system, as well as a method and an article may operate to move fluid from at least one fluid container into a flow line so as to cause the fluid to contact at least one surface having a condition affecting sensor information provided by a sensor. Additional activities may include adjusting operation of a fluid transport mechanism based on the sensor information and baseline information, to continue moving the fluid and change the condition until the fluid is depleted from the at least one fluid container or the sensor information conforms to the baseline information to a selected degree. Additional apparatus, systems, and methods are disclosed. | 01-08-2015 |
20150293066 | ONLINE GAS CHROMATOGRAPH OPERATION WITH REDUCED USAGE OF CALIBRATION GAS - An online gas chromatograph is provided. The online gas chromatograph includes a sample inlet and at least one chromatographic column operably coupled to the sample inlet. At least one valve is interposed between the sample inlet and the at least one chromatographic column. A detector is fluidically coupled to the at least one chromatographic column. A controller is coupled to the detector and to the at least one valve, the controller is configured to control flow from the sample inlet through the chromatograph using the at least one valve. The controller is configured to generate a plurality of sequential calibration cycles, where each calibration cycle has a calibration gas purge operation. The first calibration gas purge operation lasts longer than the second calibration gas purge operation. | 10-15-2015 |
20150316559 | GLUCOSE SENSOR SIGNAL STABILITY ANALYSIS - Disclosed are methods, apparatuses, etc. for glucose sensor signal stability analysis. In certain example embodiments, a series of samples of at least one sensor signal that is responsive to a blood glucose level of a patient may be obtained. Based at least partly on the series of samples, at least one metric may be determined to assess an underlying trend of a change in responsiveness of the at least one sensor signal to the blood glucose level of the patient over time. A reliability of the at least one sensor signal to respond to the blood glucose level of the patient may be assessed based at least partly on the at least one metric assessing the underlying trend. Other example embodiments are disclosed herein. | 11-05-2015 |
20160018246 | ADVANCED ANALYTE SENSOR CALIBRATION AND ERROR DETECTION - Systems and methods for processing sensor data and self-calibration are provided. In some embodiments, systems and methods are provided which are capable of calibrating a continuous analyte sensor based on an initial sensitivity, and then continuously performing self-calibration without using, or with reduced use of, reference measurements. In certain embodiments, a sensitivity of the analyte sensor is determined by applying an estimative algorithm that is a function of certain parameters. Also described herein are systems and methods for determining a property of an analyte sensor using a stimulus signal. The sensor property can be used to compensate sensor data for sensitivity drift, or determine another property associated with the sensor, such as temperature, sensor membrane damage, moisture ingress in sensor electronics, and scaling factors. | 01-21-2016 |
20160033541 | CALIBRATION PROCESS AND SYSTEM - An improved calibration process for a medical testing machine. The machine automatically recognizes that a package of calibration material has been inserted into it, and performs a calibration sequence to ascertain a calibration parameter to be used in performing future tests with the medical testing machine. The calibration package may include machine-readable indicators that the package is to be used for calibration, and of a calibration setpoint of a calibration material in the package. A calibration material may be stored in a lyophilized state in the package, and the medical testing machine may automatically reconstitute the lyophilized material. | 02-04-2016 |
20160061707 | VERIFICATION OF A METER SENSOR FOR A VIBRATORY METER - A vibratory meter and method for verification of a vibratory sensor is provided. The method includes measuring a plurality of temperatures using a temperature sensor and measuring a plurality of sensor time periods using the sensor assembly. An average temperature and an average sensor time period are determined. The average sensor time period is compensated using the average temperature, generating a compensated sensor time period. The compensated sensor time period is compared to a reference sensor time period. The results are indicated. In further embodiments, a standard deviation of the plurality of temperatures or the plurality of sensor time periods are compared to a limit and sensor stability is indicated. In further embodiments, a difference between measured density and a reference density of a fluid is compensated using the altitude and the average temperature. | 03-03-2016 |
20160084807 | AUTOMATED METHOD OF CALIBRATING A CHROMATOGRAPHY SYSTEM AND ANALYSIS OF A SAMPLE - An automated method of calibrating a chromatography system and analyzing a sample is described. The method includes forming diluted standard solutions that are injected into a chromatography column. The detected peaks can be identified based on a first predetermined calibration ratio associated with the standard solution. Once the chromatography system is calibrated, samples can be chromatographically analyzed where the measured peaks are identified and quantified in an automated manner. | 03-24-2016 |
20160139095 | SYSTEMS AND METHODS OF COMPENSATION FOR CHROMATOGRAPHY COLUMN VOLUME VARIATIONS - Provided are systems and methods for adapting to volume variations in microfluidic chromatography columns. A column is calibrated by comparing a parameter of the column with a same parameter of a reference column and generating, by a processor, an adjustment factor in response to the comparison between the parameter of the column with a same parameter of the reference column. Volume differences between the calibrated column and the reference column are compensated for by integrating the generated adjustment factor into a sample separation involving the calibrated column. | 05-19-2016 |
20180024101 | AUTOMATED METHOD OF CALIBRATING A CHROMATOGRAPHY SYSTEM AND ANALYSIS OF A SAMPLE | 01-25-2018 |