Entries |
Document | Title | Date |
20080251379 | ELECTROCHEMICAL SENSOR WITH ZERO CALIBRATION FEATURE AND METHOD OF CALIBRATING - An easily calibrated analytical instrument for sensing a target analyte. The instrument includes an electrochemical sensor and a switch. The electrochemical sensor includes a sensing electrode and a counter electrode. The switch is a normally open switch effective for creating a short circuit between the sensing and counter electrodes when closed. A zero calibration reading can be taken when the switch is closed. | 10-16-2008 |
20080277279 | ELECTROPHORETIC DEVICE, METHOD OF DRIVING THE SAME, AND ELECTRONIC APPARATUS - Disclosed is a method of driving an electrophoretic device that includes an electrophoretic element having a first electrode, a second electrode, and an electrophoretic layer disposed between the first and second electrodes, and further includes a capacitor connected to the first electrode at one terminal. The method includes (a) applying a reference potential or a first potential higher than the reference potential to the first electrode of the electrophoretic element and the terminal of the capacitor and applying the reference potential to the second electrode of the electrophoretic element, and (b) applying a signal fluctuating between a second potential and a third potential to the second electrode subsequently to the step (a), the second potential being equal to or higher than the reference potential, the third potential being higher than the second potential and being equal to or lower than the first potential. | 11-13-2008 |
20080277280 | DEVICE FOR ANALYSIS OF A SAMPLE ON A TEST ELEMENT - An analysis device for analysis of a sample on a test element is provided that comprises at least one component configured to make electrical contact with at least one other component for electrical transmission therebetween. The at least one component generally comprises an injection-molded circuit mount, also called an MID, or molded interconnect device. | 11-13-2008 |
20080277281 | SENSOR CONTROL DEVICE - A sensor control device for controlling a current application state of a gas sensor element when measuring a specific gas component concentration in a gas to be measured using the gas sensor element, which sensor control device includes: at least one cell having a solid electrolyte body and a pair of electrodes; a sensor heating unit as defined herein; an oxygen reference pole generating unit as defined herein; a damage avoidance time elapse determining unit as defined herein; and a reference generation current application permitting unit as defined herein. | 11-13-2008 |
20080283398 | SOOT SENSING SYSTEMS HAVING SOOT SENSORS AND METHODS FOR MANUFACTURING THE SOOT SENSORS - Soot sensing systems and soot sensors are provided. In one exemplary embodiment, a soot sensor includes a non-conductive substrate and a first electrode disposed on the non-conductive substrate. The soot sensor further includes a second electrode disposed on the non-conductive substrate and spaced away from the first electrode. The soot sensor further includes a first protective layer disposed over at least a portion of the first electrode. The soot sensor further includes a second protective layer disposed over at least a portion of the second electrode. Further, an electrical parameter between the first and second electrodes is indicative of an amount of soot disposed on the non-conductive substrate between the first and second electrodes. | 11-20-2008 |
20090020421 | Voltage-Type Gas Concentration Sensor and Sensing Method - This invention discloses a voltage-type gas concentration sensor and sensing method thereof. An ionic sensing electrode, a solid electrolyte membrane and a gas-permeable membrane are provided. The ionic sensing electrode comprises a sensing window. The solid electrolyte membrane is disposed on the sensing window. The gas-permeable membrane is disposed on the solid electrolyte membrane. By detecting the change of a reaction voltage as a result of reaction between the ionic sensing electrode and a solution to be measured, the invention is able to determine the pH of the solution to be measured. | 01-22-2009 |
20090020422 | Sensor Assemblies For Analyzing NO and NO2 Concentrations In An Emission Gas And Methods For Fabricating The Same - Sensor assemblies for analyzing NO and NO | 01-22-2009 |
20090071825 | GAS SENSOR DESIGNED TO ENSURE STABILITY OF WATERPROOFING OF AIR FLOW PATH - A gas sensor equipped with an elastic member which is disposed hermetically in an open end of an air cover joined to a housing. The elastic member has a vertical hole, an air flow path, and lead-retaining holes through which leads pass to establish electric connections between a sensing device and an external device. The air flow path extends from the vertical hole to an outer peripheral surface of the elastic member to direct air having entered at air inlets to the vertical hole. An assembly of an air-permeable filter and a support is fit elastically in the vertical hole of the elastic member, thereby asserting the stability of adhesion between the vertical hole and the filter even if the filter is thermally deteriorated to ensure the waterproofing of the gas sensor. | 03-19-2009 |
20090101500 | TEST STRIP WITH IDENTIFICATION FUNCTION AND TEST INSTRUMENT USING THE SAME - The present invention discloses a test strip with an identification function and a test instrument using the same. The test strip of the present invention comprises a substrate, a test area on the substrate and an identification area also on the substrate. The identification area has at least two identification electrodes, at least one resistor element connected in parallel with the identification electrodes, and an electrode area coupling the identification electrodes and the resistor element. Thereby, the present invention provides many sets of identification signals to differentiate customers, test strips and test instruments. | 04-23-2009 |
20090107838 | ELECTROCHEMICAL CARBON MONOXIDE SENSOR SUPERVISION - A sensor supervision system for periodically providing a test to accesses the status of a gas detection sensor, such as a carbon monoxide (CO) sensor, is provided. To access the status of the CO sensor, a processor provides a voltage to the sensor supervision system, such that a voltage is applied to CO sensor, charging the CO sensor. The status of the CO sensor is accessed by determining the change in the voltage charge of the CO sensor between two sampling time points. If the first sample voltage is substantially equal to the second sample voltage, i.e., a substantially constant voltage, the carbon monoxide sensor fails the test. However, if there is an change is the voltage change between the first and second sampled time points, the CO sensor passes the test. | 04-30-2009 |
20090107839 | GAS SENSOR - The invention relates to a gas sensor for determining the oxygen concentration in a gas mixture, especially in the exhaust gas of internal combustion engines. Said gas sensor comprises a pump cell having an outer pump electrode, exposed to the gas mixture, and an inner pump electrode, exposed to the gas mixture via a diffusion barrier, and a solid electrolyte body interposed between the outer pump electrode and the inner pump electrode. The gas sensor also has a reference electrode, exposed to a reference gas, and a sensor heating device. The outer pump electrode is connected to a circuit arrangement via a pump current line, the inner pump electrode via a measuring line, the reference electrode via a reference current line and the sensor heating device via two heating lines. The invention is characterized in that the pump current line and one heating line are electrically interconnected and grounded, the pump current can be supplied via the measuring line and the Nernst voltage can be tapped between the measuring line and the reference pump current line and the reference pump current flows from the reference electrode to the outer pump electrode. | 04-30-2009 |
20090114536 | SENSOR CONTROL DEVICE - A sensor control device including a circuit board separate from and electrically connectable to a gas sensor, the gas sensor including a detecting element configured to output a concentration response signal in response to the concentration of a specific gas component. The circuit board has mounted thereon: a detecting element driving unit; a temperature sensing element configured to output a temperature response signal in response to a temperature of the circuit board; a temperature calculating unit; and a concentration information correcting unit configured to correct gas concentration information calculated by the detecting element driving unit based on temperature information calculated by the temperature calculating unit. | 05-07-2009 |
20090114537 | Multichannel potentiostat having an adjustable counter-electrode potential - The multichannel potentiostat comprises a reference terminal, a counter-electrode terminal, and at least two working terminals, respectively designed to be connected to a reference electrode, a counter-electrode and at least two working electrodes of an electrochemical cell. The potentiostat comprises first and second regulating circuits to apply a setpoint voltage respectively between the first and second working terminals and the reference terminal. The potentiostat comprises a control circuit of the counter-electrode voltage applied to the counter-electrode terminal. The control circuit comprises a first input terminal connected to a predefined potential and a second input terminal to which a regulating voltage representative of at least one of the voltages of the working terminals is applied. | 05-07-2009 |
20090134024 | Embedded Strip Lot Autocalibration - An auto-calibration system for diagnostic test strips is described for presenting data individually carried on each test strip readable by a diagnostic meter. The test strip meter may provide a predetermined varying resistance on one strip or a plurality of varying resistances from strip lot to strip lot. | 05-28-2009 |
20090152112 | GAS SENSOR - Disclosed is a gas sensor, particularly a lambda probe, for determining the oxygen concentration in the exhaust gas of an internal combustion engine that is operated using a fuel-air mixture. Said gas sensor comprises a pump cell with an outer electrode that is exposed to the exhaust gas, an inner electrode located in a measuring chamber which is separated from the exhaust gas by means of a first diffusion barrier, and an electronic circuit for generating a voltage applied between the outer electrode and the inner electrode as well as for measuring and evaluating a pump current that is generated in said process in order to draw a conclusion therefrom about the composition of the fuel-air mixture. The inventive gas sensor is characterized in that the outer electrode is arranged in an independent measuring volume which is separated by means of an additional, second diffusion barrier whose coefficient of diffusion is different from that of the first diffusion barrier while the circuit is configured so as to preferably repeatedly reverse the polarity of the voltage. | 06-18-2009 |
20090152113 | Gas detection system - A gas detection system used for detecting a concentration of a gas in a second environment based on a concentration of the gas in a first environment is provided. The gas detection system may include a gas detecting device having two detection module, a first dielectric layer a second dielectric layer and a programmed control module. The control module may detect the voltage outputted by the first detection module to obtain the concentration of the gas in the second environment, when the detected voltage is smaller than a predetermined value. The control module may output a voltage signal to the second detection module and may detect the steady state current corresponding to the voltage signal to obtain the concentration of the gas in the second environment corresponding to the steady state current. | 06-18-2009 |
20090200163 | Chemical Sensor - The invention concerns a chemical sensor comprising at least one cantilever sensor unit with a capture surface for a chemical substance to be detected. The cantilever comprises a piezoresistor of doped single crystalline silicon with a pair of wires for applying an electrical field over the piezoresistor, and a current shield capable of shielding the piezoresistor electrically from a liquid for a sufficient time to performing a measurement when a liquid sample is applied in contact with the capture surface. The current shield comprises one or more of the materials selected from the group consisting of nitrides, such as silicon nitride, metal oxides, such as aluminum oxide, ceramics, diamond films, silicon carbide, tantalum oxide, single crystalline silicon, glass mixtures and combinations thereof, said current shield preferably comprises one or more of the materials silicon nitride and single crystalline silicon. The invention also relates to methods of preparing such chemical sensor. | 08-13-2009 |
20090200164 | GAS SENSOR - A gas sensor includes a plate-like sensor element having solid electrolyte layers; a circuit board having a processing circuit for processing an output signal from the sensor element; terminals connected to the sensor element and to the circuit board and serving as electric junctions therebetween; and a metallic casing which encloses the sensor element, the circuit board, and the terminals and has attachment portions for attachment to an external object. The attachment portions are attached to an inlet pipe at a position located downstream of an EGR gas inlet or to a cylinder head. | 08-13-2009 |
20090205957 | GAS SENSOR CONTROL DEVICE - A gas sensor control device is disclosed as including a sensor cell having a negative terminal, to which a current-voltage converter is connected, and a differential amplifier is connected to the current-voltage converter to provide a current measured result applied to a microcomputer. The current-voltage converter has an opposite-to-sensor terminal to which another differential amplifier is connected. A sensor-side terminal of the current-voltage converter and another differential amplifier is electrically connected to each other via an electric pathway having a sensor-current flow disabling pathway in which a switch circuit is provided. Closing the switch circuit allows a potential difference between both terminals of the current-voltage converter is zeroed. With the switch circuit closed, the microcomputer calculates an element current correcting value, while detecting an electromotive force of the sensor cell based on which a failure is determined. | 08-20-2009 |
20090236223 | GAS SENSOR CONTROL SYSTEM ENSURING INCREASED MEASUREMENT ACCURACY - A gas sensor control system for a gas sensor having a first, a second, and a third cell. The second cell produces a second cell electric current indicating the concentration of oxygen in gas in which the amount of oxygen has already been controlled by the first cell. The third cell produces a third cell electric current indicating the concentration of a preselected component of the gas in which the amount of oxygen has already been controlled by the first cell. A second cell circuit converts the second cell electric current into a voltage as a second cell current-measured value. A current adjuster produces a flow of an adjustment current as a function of the second cell current-measured value so that a third cell circuit converts the third cell electric current minus the adjustment current into a voltage as representing the concentration of the preselected component of the gas. | 09-24-2009 |
20100000863 | PARTICULATE MATTER DETECTION DEVICE - A particulate matter detection device | 01-07-2010 |
20100122905 | AMPEROMETRIC IN-PIPE ELECTROCHEMICAL SENSING PROBE - A sensing probe intended to measure the content of an oxygen reducible substance in a fluid, includes:
| 05-20-2010 |
20100133103 | METHOD AND A DEVICE FOR MONITORING PHYSICAL CONDITIONS - A method for monitoring the physical conditions of products, such as food-stuff and similar, wherein a plurality of detectors associated to nodes (25; 31) is arranged close to the food-stuff. A detector (26; 34) continuously measures at least one physical condition of a product. The nodes (25; 31) establish continuously and periodically a wire-less contact with the central unit (12), said nodes and said central unit being part of a local installation, and also transfer measured data from the detectors (26; 34) to the central unit (12). The central unit (12) continuously stores the received measured data and continuously and periodically establishes a wireless contact with a server (11) connected to the Internet for the transfer of stored measured data. Information related to the transferred measured data is made available on the server (11) to be reviewed through the Internet. The central unit (12) comprises a first communication means (14) for a wireless communication with a web server (11) connected to the Internet and a second communication means (16) for a wire-less communication with the nodes. The nodes comprise a communication means (17) corresponding to the second communication means for having a wire-less communication with the second communication means. Furthermore, the nodes comprise detectors (12; 34) and detector elements (27; 39) for recording data relating to the physical condition of the object. The nodes are arranged to continuously and periodically establish a wireless contact with a central unit (12) comprising a storage unit (53) for storing a plurality of measured data from a plurality of nodes. | 06-03-2010 |
20100140088 | REFERENCE ELECTRODE HAVING SELF-CALIBRATION FUNCTION AND APPARATUS FOR AUTOMATICALLY CORRECTING ELECTROCHEMICAL POTENTIAL CORRECTION APPARATUS USING THE SAME - Disclosed herein is a reference electrode having a self-calibration function, which is used in electrochemical measurement and whose measurement accuracy can be maintained for a long period of time. Also disclosed is an apparatus for automatically correcting electrochemical potential using the reference electrode. The apparatus comprises: a reference electrode, comprising an external electrode body having an electrolyte membrane at one end thereof and an electrolyte solution filled therein, and at least two electrically isolated internal electrodes which are disposed in the external electrode body in such a manner that they are immersed in the electrolyte solution; and a reference potential calibrator for applying AC voltage to the internal electrodes to measure the electrical conductivity of the electrolyte solution of the electrolyte solution and output a correction signal about the change in the reference potential of the reference electrode. The reference electrode and the apparatus can suitably calibrate the change in the potential of the reference electrode by measuring the internal electrolyte of the reference electrode and calculating the concentration of the internal electrolyte, and thus the function of the reference electrode can be maintained for a long period of time. | 06-10-2010 |
20100170794 | DIRECT CONNECT OXYGEN SENSOR - A direct connect oxygen sensor assembly is provided for measuring the proportion of oxygen in a fluid stream, and transmit signals indicative thereof to a controller. The assembly includes an oxygen sensor with a housing having an oxygen-sensing element protruding from one end thereof, and a first electrical terminal positioned at an opposing end of the sensor housing. An electrical conductor electrically couples the oxygen-sensing element to the first electrical terminal. The oxygen sensor assembly also includes a connector assembly with a housing having one or more lead wires, which are directly connected to the controller, projecting therefrom. A second electrical terminal is mounted to the connector housing, and electrically connected to the lead wires. The second electrical terminal is designed to mate with and electrically connect to the first electrical terminal. The connector housing is fabricated from a material with a working temperature of at least 200 degrees Celsius. | 07-08-2010 |
20100170795 | ELECTROCHEMICAL GAS SENSOR - An electrochemical gas sensor has a hollow housing with multi-layer walls. A first layer of the walls has a selected water vapour transport rate. A second layer of the walls has a lower water vapour transport rate than the selected rate. The housing can be formed by first and second moulding processes. | 07-08-2010 |
20100187109 | PROTON ACCEPTANCE TYPE SENSOR, HYDROGEN GAS SENSOR AND ACID SENSOR - The present invention provides a low-cost hydrogen gas sensor, which exhibits high sensory selectivity for protons and operates at room temperature, and can also provide a highly sensitive sensor capable of fulfilling the important functions of detecting hydrogen gas and preventing leakage accidents in production plants that use hydrogen gas as a carrier, in hydrogen gas storage facilities, and in so-called fuel cells that use hydrogen gas as an energy source. In addition, the sensor is also effective as an acid sensor for hydrofluoric acid and the like. | 07-29-2010 |
20100219074 | ANALYZER - An analyzer that, based on a voltage value of an ion selective electrode making contact with a liquid specimen, analyzes concentration of an electrolyte present in the liquid specimen. The analyzer includes a measuring unit that continuously measures the voltage value; a memory unit that stores therein a waveform indicating time variation in the voltage value measured by the measuring unit and reference information used in identifying malfunctioning in the analyzer; an output unit that outputs an analysis result of the liquid specimen; and a control unit that causes the output unit to output the waveform and the reference information stored in the memory unit. | 09-02-2010 |
20100270153 | GAS SENSING SYSTEM WITH QUARTZ CRYSTAL SUBSTRATE - An exemplary gas sensing system includes a gas sensing unit, a detecting unit, and a processing unit. The gas sensing unit includes a quartz crystal substrate, a first electrode layer, a second electrode layer, a first activating layer, and a sensor medium layer having adsorption ability and desorption ability to chemiacal gas. The detecting unit is electrically connected with the first electrode and the second electrode, and is configured for detecting a frequency change of the gas sensing unit before and after adsorbing the chemiacal gas. The processing unit is electrically connecting with the detecting unit, and is configured for obtaining a mass change of the gas sensing unit according to the frequency change. | 10-28-2010 |
20100288635 | FLEXIBLE DEFORMATION SENSOR - Disclosed is a low-cost deformation sensor which is light-weighted and flexible. The deformation sensor stably operates with high responsivity in the air. Specifically disclosed is a deformation sensor ( | 11-18-2010 |
20100294661 | Oxygen Sensor Improvement Method - A method for improving the performance of a galvanic fuel cell type oxygen sensor comprises providing a pressure equalization port leading to the interior of an inner core housing that contains the membrane, the electrolyte and the anode and cathode electrodes and hermetically sealing the sensor housing except for its sample inlet port and its sample outlet port. By connecting the same vacuum source to both the pressure equalization port and the sample outlet port, the device's membrane is less subject to movement or rupture as gas samples are drawn in via the sample inlet port. A technique for ensuring a hermetic seal is also described. | 11-25-2010 |
20100326824 | ANALYTE TEST STRIP WITH COMBINATION ELECTRODE CONTACT AND METER IDENTIFICATION FEATURE - An analyte test strip (e.g., an electrochemical-based analyte test strip for determining glucose in a bodily fluid sample) for use with a test meter includes a first insulating layer and a electrically conductive layer disposed on the first insulating layer. The electrically conductive layer includes at least one electrode portion and at least one electrical contact pad configured for an electrical connector pin of a test meter to travel therealong during insertion of the analyte test strip into the test meter. In addition, the electrical contact pad is in electrical communication with the electrode portion. The analyte test strip also includes at least one meter identification feature (such as stripes of visually transparent material) disposed on the electrical contact pad such that the electrical connector pin of the test meter travels across the meter identification feature during insertion of the analyte test strip into the test meter. The analyte test strip further includes a second insulating layer disposed above the first insulating layer and a patterned spacer layer positioned between the first insulating layer and the electrically conductive layer that defines a sample-receiving chamber therein. The electrical contact pad of the analyte test strip has a predetermined contact electrical characteristic value and the meter identification feature has a predetermined identification feature electrical characteristic value that is dissimilar from the predetermined contact electrical characteristic. | 12-30-2010 |
20110036714 | Handheld Electrochemical Sensor - A handheld sensor device is provided for measuring an ion concentration in a solution. The solution is in an electrochemical cell that includes a counter electrode, a working electrode, and a reference electrode. The sensor includes a control amplifier configured to provide a current through the counter electrode and the working electrode so as to maintain a predetermined voltage between the working electrode and the reference electrode. The sensor also includes a current amplifier configured to measure the current provided through the counter electrode and the working electrode. In one embodiment, the sensor also includes a direct digital frequency synthesizer (DDFS) including a phase accumulator. The DDFS is configured to selectively generate a waveform specified by an electrochemical technique such as square wave voltammetry, cyclic voltammetry, linear sweep voltammetry, differential-pulse polarography, normal-pulse polarography, or other known electrochemical techniques. An example microelectrode array usable with the handheld sensor is also provided. | 02-17-2011 |
20110048941 | METHODS AND SYSTEMS FOR DETECTING THE HYDRATION OF SENSORS - A sensor system includes a sensor and a sensor electronics device. The sensor includes a plurality of electrodes. The sensor electronics device includes a connection detection device, a power source, and a delay circuit. The connection detection device determines if the sensor electronics device is connected to the sensor and transmits a connection signal. The delay circuit receives the connection signal, waits a preset hydration time, and couples the regulated voltage from the power source to an electrode in the sensor after the preset hydration time has elapsed. Alternatively, the sensor electronics device may include an electrical detection circuit and a microcontroller. The electrical detection circuit determines if the plurality of electrodes are hydrated and generates an interrupt if the electrodes are hydrated. A microcontroller receives the interrupt and transmits a signal representative of a voltage to an electrode of the plurality of electrodes. | 03-03-2011 |
20110100810 | CHIP INTEGRATED ION SENSOR - A chip integrated ion sensor is provided, which comprises a substrate having arranged thereon an electrolyte insulator semiconductor structure and a reference electrode. In particular, the electrolyte insulator semiconductor (EIS) structure may be formed on a chip already processed, i.e. the EIS structure may be formed in a Back End process on an already formed chip comprising a plurality of formed electronic components. In particular, the ion sensor may be adapted to form an ion concentration sensor, e.g. a pH sensor, i.e. may form a pH sensor. The reference electrode may be a non-polarizable electrode. In particular, the reference electrode may comprise Ag or AgCl as material. | 05-05-2011 |
20110147211 | SENSOR CONTROL APPARATUS - A sensor control apparatus includes: a gas sensor including an oxygen concentration detection cell having a first solid electrolyte body, a reference electrode and a detection electrode, and a heater; an electric current supply unit that supplies electric current to the oxygen concentration detecting cell; an activation determination unit; and a heater control unit that controls electric current supply to the heater by setting a first target temperature equal to or higher than an activation determination temperature as a target temperature when the activation determination unit determines that the temperature of the gas sensor is equal to or higher than the activation determination temperature, the sensor control apparatus further includes: an automatic stop detection unit and a first temperature switching unit that controls electric current supplied to the heater such that the target temperature of the heater is switched to a second target temperature being different from a temperature at which blackening is generated in the first solid electrolyte body when an automatic stop detection unit detects the automatic stop of the engine. | 06-23-2011 |
20110174615 | DETERIORATION SIGNAL GENERATION DEVICE FOR OXYGEN SENSOR - A deterioration signal generation device for an oxygen sensor having a power supply different than a power supply connected to an external device, including a connection unit for electrically connecting the ground lines of the respective power supplies; a first acquisition unit for electrically connecting to a first output line at a reference potential side and to a second output line at a sensor potential side of the oxygen sensor, to obtain first and second potentials, respectively; an operation unit that calculates a first differential value between the first and second potentials; a processing unit that performs an operation on the first differential value; a second acquisition unit that acquires a third potential of a first input line at a reference potential side of the external device; and an output unit that generates the deterioration signal by superposing the second differential value on the third potential. | 07-21-2011 |
20110174616 | METHODS FOR MEASURING PHYSIOLOGICAL FLUIDS - Electrochemical measurement techniques for measuring the concentration of an analyte in a physiological fluid sample are described. More particularly, the present invention relates to techniques for distinguishing a signal caused by an extraneous event from a desired information providing signal such as one indicative of a measurement error. | 07-21-2011 |
20110180406 | TEMPERATURE COMPENSATION FOR ION-SELECTIVE ELECTRODES - Temperature compensation for ion-selective electrodes is obtained by positioning a temperature-measuring element in a chamber of limited thermal mass which is in thermal contact with the measuring electrode filling solution but is thermally isolated from other filling solutions in the electrode. In a preferred embodiment, the temperature-measuring element comprises a thermistor enclosed within thin flexible tubing; the electrical leads of the thermistor are forced against a segment of the inner wall of the tubing by an elongated strand of material abutting the thermistor to enhance heat transfer with the thermistor. | 07-28-2011 |
20110203925 | SYSTEM AND METHOD FOR CODING INFORMATION ON A BIOSENSOR TEST STRIP - The present invention provides a test strip for measuring a concentration of an analyte of interest in a biological fluid, wherein the test strip may be encoded with information that can be read by a test meter into which the test strip is inserted. In one embodiment, a first test strip comprises: a first measurement electrode connectable to a test meter; a first trace loop with a first associated resistance, where the first trace loop is connectable to the test meter; and a second trace loop with a second associated resistance, where the second trace loop is connectable to the test meter. The test meter is adapted to: receive the first test strip; connect to the first measurement electrode, the first trace loop, and the second trace loop; and obtain a first resistance ratio by comparing the first and second associated resistances. | 08-25-2011 |
20110214988 | GAS SENSOR ELEMENT, GAS SENSOR AND CONTROL SYSTEM OF GAS SENSOR - In order to compensate for variation in output of sensor elements | 09-08-2011 |
20110247932 | Ion sensing circuit - An ion sensing circuit includes an ion sensing element configured for exposure to an electrolytic solution and control of a sensing current through the ion sensing element according to an ion concentration of the electrolytic solution. The ion sensing circuit further includes a current-to-voltage converter coupled electrically to the ion sensing element for generating a converted voltage from the sensing current. The ion sensing circuit also includes a comparator coupled electrically to the current-to-voltage converter for comparing the converted voltage and a threshold voltage to form a comparison result. In addition, the ion sensing circuit includes a latch coupled electrically to the comparator and the current-to-voltage converter. The latch is configured for sampling the output of the comparator according to a clock signal to generate a digital signal used by the current-to-voltage converter for converting the sensing current to the converted voltage. | 10-13-2011 |
20110247933 | METHODS AND APPARATUS FOR MEASURING ANALYTES USING LARGE SCALE FET ARRAYS - Methods and apparatus relating to very large scale FET arrays for analyte measurements. ChemFET (e.g., ISFET) arrays may be fabricated using conventional CMOS processing techniques based on improved FET pixel and array designs that increase measurement sensitivity and accuracy, and at the same time facilitate significantly small pixel sizes and dense arrays. Improved array control techniques provide for rapid data acquisition from large and dense arrays. Such arrays may be employed to detect a presence and/or concentration changes of various analyte types in a wide variety of chemical and/or biological processes. In one example, chemFET arrays facilitate DNA sequencing techniques based on monitoring changes in hydrogen ion concentration (pH), changes in other analyte concentration, and/or binding events associated with chemical processes relating to DNA synthesis. | 10-13-2011 |
20110297541 | CHLORINE GAS SENSING SYSTEM - A chlorine gas sensor system includes carbon nanotubes at least partially coated with a metal oxide deposited on a substrate, and a source of infra-red light positioned to illuminate at least a portion of the coated nanotubes. | 12-08-2011 |
20110303539 | Analyte Sensors and Methods - Methods of determining analyte concentration. The methods use a fraction of the predicted total charge, from analyte electrolysis, instead of using time, for determination of a data collection endpoint. The total charge is then extrapolated from the data collection endpoint. The analyte concentration is determined from the total charge. | 12-15-2011 |
20120061239 | ELECTRONIC AND FLUIDIC INTERFACE - An electronic fluidic interface for use with an electronic sensing chip is provided. The electronic fluidic interface provides fluidic reagents to the surface of a sensor chip. The electronic sensing chip typically houses an array of electronic sensors capable of collecting data in a parallel manner. The electronic fluidic interface is used, for example, as part of a system that drives the chip and collects, stores, analyzes, and displays data from the chip and as part of a system for testing chips after manufacture. The electronic fluidic interface is useful, for example, nucleic sequencing applications. | 03-15-2012 |
20120090995 | DEVICE FOR DETECTING AN ANALYTE - Devices for detecting an analyte comprising a redox active analyte sensitive material on a working electrode and computer assisted signal acquisition and processing. | 04-19-2012 |
20120097537 | SENSOR | 04-26-2012 |
20120125768 | DISSOLVED OXYGEN MEASUREMENT SYSTEM - Provided is a dissolved oxygen measurement system. The dissolved oxygen measurement system includes a hydrogen storage device storing hydrogen, a first hydrogen fuel cell in which the hydrogen stored in the hydrogen storage device and water supplied from the outside in real time react with each other to generate first electricity energy, a water storage tank storing the water supplied from the outside, a second hydrogen fuel cell in which the water supplied from the water storage tank and the hydrogen stored in the hydrogen storage device react with each other to generate second electricity energy, and a control unit analyzing a difference between the first electricity energy and the second electricity energy. | 05-24-2012 |
20120160678 | ELECTRODE DEVICE FOR AN ELECTROCHEMICAL SENSOR CHIP - An electrode device for an electrochemical sensor chip includes an insulation sheet having an insulating property and including a top surface and a bottom surface opposite to each other in a thickness direction, and electrode members having a conductivity and held by the insulation sheet in portions piercing the insulation sheet in a thickness direction, one ends of the electrode members located on the top surface side of the insulation sheet being connected to the analyte, other ends located on the bottom surface side of the insulation sheet being connected to the electrodes of the transducer, recesses for trapping the analyte being formed in the top surface of the insulation sheet so as to correspond to the electrode members, the one ends of the electrode members being exposed at a bottom of the recesses. | 06-28-2012 |
20120160679 | ELECTRODE DEVICE FOR AN ELECTROCHEMICAL SENSOR CHIP - An electrode device for an electrochemical sensor chip includes an insulation sheet having an insulating property and including a top surface and a bottom surface opposite to each other in a thickness direction, and electrode members having a conductivity and held by the insulation sheet with the electrode members piercing the insulation sheet in a thickness direction, one ends of the electrode members located on the top surface side of the insulation sheet being connected to an analyte, the other ends located on the bottom surface side of the insulation sheet being connected to an electrodes of a transducer, at least the one ends of the electrode members being made of a mixture of conductive particles and an insulating material. | 06-28-2012 |
20120168307 | One-Transistor Pixel Array with Cascoded Column Circuit - To reduce the pixel size to the smallest dimensions and simplest form of operation, a pixel may be formed by using only one ion sensitive field-effect transistor (ISFET). This one-transistor, or 1T, pixel can provide gain by converting the drain current to voltage in the column. Configurable pixels can be created to allow both common source read out as well as source follower read out. A plurality of the 1T pixels may form an array, having a number of rows and a number of columns and a column readout circuit in each column. A cascoded device enabled during readout may be used to provide increased programmable gain. | 07-05-2012 |
20120199478 | NOx SENSOR CONTROL APPARATUS - In a NOx sensor control apparatus ( | 08-09-2012 |
20120228136 | Array Column Integrator - Circuits are described for reading a chemically-sensitive field-effect transistor (chemFET) with an improved signal-to-noise ratio. In one embodiment, a device is described that includes a chemFET including a first terminal and a second terminal, and a floating gate coupled to a passivation layer. An integrator circuit is coupled to the second source/drain terminal of the chemFET via a data line. The integrator circuit applies a bias voltage to the data line during a read interval, thereby inducing a current through the chemFET based on a threshold voltage of the chemFET. The integrator circuit then generates an output signal proportional to an integral of the induced current through the chemFET during the read interval. | 09-13-2012 |
20120241319 | Gas Detector Having Bipolar Counter/Reference Electrode - A gas detector includes at least two electrodes. The electrodes are carried on a common substrate having first and second spaced apart surfaces. The electrodes are formed on respective ones of the surfaces with the substrate sandwiched therebetween. | 09-27-2012 |
20120285827 | PORTABLE ELECTROCHEMICAL CELLS - The invention comprises portable, rugged and relatively compact electrochemical cells. Each cell has the ability to be removably and nondestructive secured to one surface of a substrate of indefinite size. In-situ electrochemical measurements may be made on portions of existing structures such as ships, bridges, or buildings. An electrochemical cell comprises an analytical chamber which can be utilized with potentiostats. An electrochemical cell is a self-contained portable probe comprising an electrochemical cell, an electronics component and a fluid handling component. Said probe is capable of performing electrochemical measurements by itself without the use of an external potentiostat, such as monitoring corrosion, effectiveness, or integrity of conductive and nonconductive coatings on bare and coated metallic or conductive substrates. | 11-15-2012 |
20120298507 | Systems, Methods, and Devices Including Amperometric and Voltammetric Duty Cycles - A sensor system including devices and methods for determining the concentration of an analyte in a sample is described. Input signals including amperometric and voltammetric duty cycles of excitations and relaxations may provide a shorter analysis time and/or improve the accuracy and/or precision of the analysis. The disclosed system may reduce analysis errors, thus improving measurement performance, by adjusting the potential and/or scan rate in response to output currents obtained from voltammetric scans. The disclosed system also may determine the concentration of more than one ionizable species in the sample by adjusting the potential and/or scan rate in response to output currents obtained from voltammetric scans. The multiple, determined concentrations may be used to determine the concentration of multiple analytes or to correct the concentration determined for an analyte, thus improving the measurement performance of the system. | 11-29-2012 |
20120318670 | No Calibration Analyte Sensors and Methods - A meter and sensors, for use in combination, where no calibration code has to be entered by the user or is read by the meter. The meter is configured with a predetermined slope and y-intercept built into the meter. If the slope and y-intercept of the sensor are within a predetermined area or grid, or otherwise close to the slope and y-intercept of the meter, the batch of sensors is acceptable for use with that meter for providing accurate analyte concentration results. | 12-20-2012 |
20130001081 | Colorimetric or electrochemical mercury and trace metal detector - A simple and low cost device to detect the presence of mercury or other trace metals in the environment and quantify said concentration by spectrophotometric, colorimetric, or electrical conductivity is disclosed. Owing to its small size, it is suitable for portable mercury detectors or detectors that may be worn as badges in the breathing zone of workers. | 01-03-2013 |
20130020197 | LED-BASED SCREENER FOR PHOTOELECTROCHEMICAL MATERIALS DISCOVERY - An LED-based materials analysis apparatus that measures the photoelectrochemical response of materials to illumination. The apparatus uses an array of light sources such as a plurality of LEDs that provide light of desired wavelengths to illuminate one or more samples of materials of interest that are immersed in an electrolyte. A measurement circuit is connected between a transparent conductor attached to each sample of interest and a counter electrode. In some measurements, a third, standard electrode may be connected to the measurement circuit. A pulsing circuit that operates the LEDs causes each sample to be tested according to a predetermined sequence. Data is collected using a programmable computer operating under the control of instructions recorded on a machine readable medium. The data is analyzed and is available to be displayed to a user, recorded in a database, or communicated to another apparatus or process. | 01-24-2013 |
20130062202 | DEVICE FOR ANALYSIS OF A SAMPLE ON A TEST ELEMENT - An analysis device for analysis of a sample on a test element is provided that comprises at least one component configured to make electrical contact with at least one other component for electrical transmission therebetween. The at least one component generally comprises an injection-molded circuit mount, also called an MID, or molded interconnect device. | 03-14-2013 |
20130075254 | Static Equilibrium Path for Measurements of Dynamic Flows - A meter is adapted for measuring concentrations of a chemical in a flowing solution. The meter has a barrier that shields a sensor from the high turbulence of the solution flow. One or more membranes can be employed to selectively filter out various ions or other chemicals. | 03-28-2013 |
20130087456 | AUXILIARY MICRO-ELECTRODES FOR DIAGNOSTICS OF ELECTROCHEMICAL GAS SENSORS - A gas sensor includes known types of electrodes such as sensing electrodes, counter electrodes or reference electrodes to sense the presence of a predetermined gas. In addition, at least one diagnostic electrode is carried in the sensor. The diagnostic electrode implements at least one diagnostic function without substantially impairing the gas sensing function. The diagnostic electrode is immersed in sensor electrolyte. | 04-11-2013 |
20130161191 | REFERENCE HALF-CELL AND ELECTROCHEMICAL SENSOR WITH THE REFERENCE HALF-CELL - A reference half-cell for application in an electrochemical sensor, comprising a housing, in which a chamber containing a reference electrolyte is formed, wherein the reference electrolyte ( | 06-27-2013 |
20130168244 | Carbon Monoxide Sensor with Reduced Hydrogen Cross Sensitivity - A gas sensor in one form comprises a housing including a base and a top defining an interior space. The housing includes a gas entry hole and first and second electrical terminals. First and second electrodes in the housing interior space each comprise a membrane having a layer of platinum black catalyst on one side. The second electrode includes a lower amount of platinum black catalyst than the first electrode. A separator is placed between the first and second electrodes. Current collectors electrically connect the first and second electrodes to the respective first and second electrical terminals whereby sensor current represents concentration of gas while minimizing cross sensitivity. | 07-04-2013 |
20130180853 | GAS SENSOR PROCESSING APPARATUS - A gas sensor processing apparatus ( | 07-18-2013 |
20130213806 | OXYGEN SENSING DEVICE WITH CAPABILITY OF STORING ENERGY AND RELEASING ENERGY - An oxygen sensing device with capability of storing energy and releasing energy including an oxygen sensing unit, a gas storing unit, and a control unit. The oxygen sensing unit includes a solid oxide electrolyte disposed between two conductive catalyst layers. The control unit includes a power source, a voltmeter, and a power output circuit. The power source provides electrical power to these conductive catalyst layers of the oxygen sensing unit to process a catalytic reaction and generate hydrocarbons for being stored in the gas storing unit. The voltmeter senses a voltage generated by the oxygen sensing unit when the oxygen sensing unit senses oxygen. The oxygen sensing unit makes the hydrocarbons stored in the gas storing unit and oxygen process a chemical reaction for generating electrical power to the power output circuit. The oxygen sensing unit uses the power source to generate hydrogen or syngas. | 08-22-2013 |
20130220807 | DYNAMIC PRECIOUS METAL ASSAY DEVICE - A DYNAMIC PRECIOUS METAL ASSAY DEVICE is described which is based on the methodology of the parent patent DYNAMIC PRECIOUS METAL ASSAY METHOD, U.S. Pat. No. 4,799,999 and achieves a highly accurate gold assay with a range extended to over 24 karats. The specified device requires a manual expulsion of a small amount of electrolyte from a disposable cartridge into a miniature galvanic cell which is formed at the lower tip of the device pencil. Placing the said tip against a gold specimen under test, thereby wetting it, and then by initiating the charging cycle and interpolating algorithm in the external electronics results in a professionally accurate assay of the gold specimen under test. The superior performance of this device is attributed to the novel replaceable electrolytic cartridge and miniature galvanic cell which wets a specimen through a porous interface. This improved device is very stable, rugged and is easily maintained. | 08-29-2013 |
20130233707 | SENSOR AND SENSOR SYSTEM - A sensor for detecting the property of the liquid includes a substrate, a first pair of electrodes disposed on an upper surface of the substrate, and a second pair of electrodes disposed on a lower surface of the substrate. A capacitance of the first pair of electrodes and a capacitance of the second pair of electrodes mutually change correlatively to the same property of the liquid. | 09-12-2013 |
20130319857 | GAS SENSOR CONTROL APPARATUS - A gas sensor control apparatus ( | 12-05-2013 |
20130341187 | MEASUREMENT DEVICE FOR DETERMINING A PROCESS VARIABLE - A measurement device ( | 12-26-2013 |
20140001046 | Measuring device and methods for use therewith | 01-02-2014 |
20140014511 | ELECTROCHEMICAL SENSING ARRAYS - Methods, arrays, and systems for electrochemical sensing are provided. An example of a method includes forming a number of first electrodes, forming a fluidic level having a number of walls that extend substantially vertically from each of the number of first electrodes, and forming a number of second electrodes in contact with the number of walls. In some examples, forming the fluidic level having the number of walls includes embossing an embossing resin. | 01-16-2014 |
20140061046 | ALCOHOL DETECTION DEVICE AND METHOD OF MANUFACTURING THE SAME - According to various embodiments, an alcohol detection device is provided for use in conjunction with a mobile application loaded on a mobile device. The device comprises: a body portion defining an exterior surface of the alcohol detection device, the exterior surface having at least one opening formed thereon; a slide mechanism mounted relative to at least one internal surface of the body portion such that the slide mechanism is configured for translational movement along a length of the at least one internal surface of the body portion; and an audio jack operatively mounted to the slide mechanism such that a longitudinal axis of the audio jack is substantially aligned with the at least one opening and the translational movement of the slide mechanism is configured to move the audio jack relative to the body portion and between a first position and a second position. An associated method is also provided. | 03-06-2014 |
20140069811 | ELECTROCHEMICAL SENSOR WITH DIAMOND ELECTRODES - An electrochemical sensor comprising: a reference electrode ( | 03-13-2014 |
20140131200 | NOX DETECTION APPARATUS AND NOX SENSOR SYSTEM | 05-15-2014 |
20140151223 | Sensor for Registering an Analyte Concentration - A sensor for registering analyte concentration includes: a housing; arranged within the housing, a sensor element, which has a front surface pressed toward a housing wall of the housing, and the sensor element has at least one contact element for electrical contacting accommodated within the housing, an inner electrolyte, which is in contact with a medium surrounding the housing via an electrochemical, liquid junction arranged in a housing wall, and a reference electrode extending into the inner electrolyte, wherein there is arranged within the housing a flexible circuit card, which includes at least a first conductive trace, which is connected with the at least one contact element of the sensor element, and at least a second conductive trace, which serves as potential sensing element of the reference electrode. | 06-05-2014 |
20140158535 | Electrochemical Amperometry-Based Sensor Combined With Long-Range Radio Communication For Measurement Of Analytes - The methods and systems according to the present invention overcome the high-frequency radiation and thermal interferences on an electrochemical sensor combined with long range radio communication. A Faraday cage is used to shield the sensor from the radiation in one embodiment. In another embodiment, a controller is installed between the sensor and the antenna to deactivate the antenna emission when the electrochemical sensor is conducting measurement. To control thermal interference, the temperature rise is controlled. The battery temperature is monitored and charging cycle is controlled. The temperature rises can also be avoided via intermittent use of the radio, heat sink strategies to direct heat away from the radio circuitry, and radio module construction designed to minimize heat emission. The present invention discloses an electrochemical sensor combined with a long range radio communication that has an improved accuracy due to having a better control of high frequency radiation and thermal interferences. | 06-12-2014 |
20140158536 | Sensor Apparatus - In the present invention, the solid contacted ISE and the solid contacted reference are based on a conductive porous network with a solid contact and membrane disposed thereon. The porous networks are not only mechanically stable, but also provide pore structure for the solid contact and membrane to intercalate, which enhances the life time and stability of the sensors. The invention further incorporates a unique fluidic fitting sensor and sealing mechanism so that measurements can be taken at high pressures. The fitting design has many benefits, such as low cost and disposability, which allows them to be mass manufactured. These sensors can be produced for detection of many different kinds of ions by applying different types of ion selective membranes, including polyvinylchloride (PVC) based ion-selective membranes and fluorous matrixes based ion-selective membranes. | 06-12-2014 |
20140190825 | pH Sensor - Improvements in references electrodes, halogen sensors, pH sensors, TDS sensors, combinations thereof, and related methods. | 07-10-2014 |
20140190826 | Arrangement for in Situ Measurement of at Least the Oxygen Content within a Solids Heap - An arrangement for in situ measurement of at least one oxygen partial pressure within a solids heap, including: at least one measuring transducer arranged within the solids heap for locally registering oxygen partial pressure, wherein each measuring transducer is embodied to output a measurement signal representing oxygen partial pressure to a superordinated unit, which is arranged outside the solids heap and is embodied to receive and to process the measurement signals of each measuring transducer. | 07-10-2014 |
20140202855 | Electrochemical Sensor Device - There is disclosed an electrochemical sensor device comprising: an integrated electrochemical sensor element having: a substrate; first and second electrodes formed on the upper surface of the substrate; and an electrolyte layer formed on the first and second electrodes so as to electrically contact both the first and second electrodes; and a sensor integrated circuit electrically connected to the first and second electrodes of the integrated electrochemical sensor element. The integrated electrochemical sensor element and the sensor integrated circuit are provided in a single package. | 07-24-2014 |
20140246315 | EROSION AND WEAR RESISTANT SONOELECTROCHEMICAL PROBE - The present invention, in one set of embodiments, provides methods and systems for integrating conducting diamond electrodes into a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, diamond electrodes may be integrated into a high power acoustic resonator to provide a robust sensing device that may provide for acoustic cleaning of the electrodes and increasing the rate of mass transport to the diamond electrodes. The diamond electrodes may be used as working, reference or counter electrodes or a combination of two or more of such electrodes. In certain aspects, the high power acoustic resonator may include an acoustic horn for focusing acoustic energy and the diamond electrodes may be coupled with the acoustic horn. | 09-04-2014 |
20140251805 | SENSOR FOR DETECTING HYDROGEN IONS IN AN AQUEOUS SOLUTION - The present disclosure relates to a sensor for detecting hydrogen ions in an aqueous solution comprising a support, a reference electrode, a working electrode and a counter electrode supported by said support, the reference electrode being made of a material comprising silver and silver chloride, the counter electrode being made of a conductive material. The working electrode comprises a substrate and a layer made of an inherently electrically conductive polymer of the polythiophene or polyaniline (PANI) or polypyrrole class. | 09-11-2014 |
20140262779 | Low Slope pH Electrode With Charge Transfer Component - An aspect includes a low slope electrode device, including: at least one electrode; at least one container at least partially enclosing the at least one electrode and having at least one ion sensitive region; an external buffer container having at least one separating element that separates said at least one ion sensitive region into: a first ion sensitive area separating an internal buffer solution bathing the at least one electrode and an external sample solution; and a second ion sensitive area separating the internal buffer solution bathing the at least one electrode and an external buffer solution; wherein the at least one separating element, the first ion sensitive area, and the second ion sensitive area establish a charge flow circuit. Other aspects are described and claimed. | 09-18-2014 |
20140318960 | MICROMACHINED OXYGEN SENSOR AND METHOD OF MAKING THE SAME - The design and manufacture method of an oxygen concentration sensor made with silicon micromachining (a.k.a. MEMS, Micro Electro Mechanical Systems) process for applications of oxygen measurement with fast response time and low power consumption is disclosed in the present invention. The said silicon oxygen concentration sensor operates with an yttrium stabilized zirconia oxide amperometric cell supported on a membrane made of silicon nitride with a heat isolation cavity underneath or a silicon nitride membrane with silicon plug for mechanical strength enforcement. | 10-30-2014 |
20140360874 | LIQUID RESIDUE DETECTION DEVICE - A liquid residue detection device detecting a residue of a liquid stored in a container is provided. The liquid residue detection device includes (i) a first electrode and a second electrode placed into the container so that areas that each of the first electrode and the second electrode contacts with the liquid decrease as a liquid level of the liquid stored in the container is low, (ii) an AC signal generation portion generating an AC signal applied to the first electrode, and (iii) a detector circuit detecting the AC signal inputted from the second electrode and outputting voltage that changes continuously according to a residue of the liquid stored in the container. | 12-11-2014 |
20150014163 | stop for sealing a housing of an exhaust gas sensor, exhaust gas sensor, and exhaust gas sensor production - A stopper for sealing a housing of an exhaust gas sensor has: at least one axial through-channel for guiding through a connecting cable; a basic body that has a fluoroelastomer; and at least one outer seal situated radially externally on the stopper and having at least one thermoplastically processable fluoropolymer-containing material having a melting point or melting range between 170° C. and 320° C. | 01-15-2015 |
20150027887 | ANALYTE SENSOR - Matrix materials such polymers derivatives to contain a redox active material can be used to form electrodes and probes suitable for use in pH meters and other analyte sensing devices. | 01-29-2015 |
20150041316 | SEMICONDUCTOR MICRO-ANALYSIS CHIP AND METHOD OF MANUFACTURING THE SAME - One of embodiments is a semiconductor micro-analysis chip for detecting particles in a sample liquid. The chip comprises a semiconductor substrate, a first flow channel provided on the semiconductor substrate to allow the sample liquid to flow therein, a second flow channel provided at a different position from the first flow channel of the semiconductor substrate to allow the sample liquid or an electrolyte solution to flow therein, a contact portion where a portion of the first flow channel and a portion of the second flow channel abut each other or intersect one another with a partition being arranged between the flow channels, and a fine hole provided on the partition of the contact portion to allow the particles to pass therethrough. | 02-12-2015 |
20150041317 | PRECISION BIPOLAR CURRENT-MODE DIGITAL-TO-ANALOG CONVERTER - A precision bipolar digital-to-analog converter (DAC) that provides a bipolar current output having a substantially fixed zero center point is provided. The DAC includes digital-to-analog converter circuitry configured to provide, responsive to a reference signal indicative of the digital data, a first analog current signal having a first potential and a second analog current signal having a second potential, subtractor circuitry configured to provide a bipolar current signal by subtracting the second analog current signal from the first analog current signal, the bipolar current signal having a zero center point, and first control circuitry electrically coupled to the subtractor circuitry and to the digital-to-analog converter circuitry, and configured to modify the second potential so that the second potential equals the first potential. | 02-12-2015 |
20150041318 | GAS SENSOR CONTROL APPARATUS | 02-12-2015 |
20150068895 | DEVICE FOR MEASURING THE FREE CHLORIDE CONTENT OF A WATER - An amperometric sensor circuit for measuring chlorine concentration in water. The circuit includes first and second working electrodes coated with a hydrophilic membrane. A power supply and biasing circuit is configured to deliver a generally constant voltage between the first working electrode and a reference electrode and to generally deliver a constant current between the second working electrode and a counter electrode. A measurement circuit measures the current between the counter electrode and the first working electrode. A processing circuit is provided for determining the chlorine concentration based on the current measured by the measurement circuit. | 03-12-2015 |
20150068896 | SENSOR CONTROL DEVICE - A gas sensor control device ( | 03-12-2015 |
20150122648 | APPARATUS FOR DETECTING SODIUM IN A LIQUID - There is provided an apparatus for detecting sodium in a liquid. A concentration of a very small amount of sodium can be repeatedly and accurately measured by correcting baseline fluctuation and sodium concentration variation due to temperature variation on the basis of measured temperature and minimizing noise influence on the concentration measurement. According to the apparatus for detecting sodium in a liquid, the apparatus for detecting sodium in a liquid can accurately and repeatedly measure a concentration of a very small amount of sodium by minimizing noise and temperature variation effects on concentration measurements to ensure measurement accuracy of sodium concentration and the stability of a baseline as a measurement reference. | 05-07-2015 |
20150300981 | Potentiometric sensor element and method for producing same - The potentiometric sensor element comprises a measuring element and a shield housing permanently bonded to the measuring element, in which housing an electronic sensor unit is accommodated and which is sealed off against external influences. The electronic sensor unit is connected to a contactless interface adapted to exchange energy and signals with a corresponding contactless interface in an electronic base unit. The shield housing comprises an outer sleeve and an inner sleeve, accommodated within the outer sleeve, wherein the electronic sensor unit is accommodated in the inner sleeve and is surrounded there by a first casting compound. The filled inner sleeve is in turn bonded permanently to the outer sleeve by means of a second casting compound, which is different from the first casting compound. | 10-22-2015 |
20150323493 | AIR-FUEL RATIO SENSOR CONTROL DEVICE - An air-fuel ratio sensor control device, connected with two-cell type air-fuel ratio sensor having electromotive force and oxygen pump cells with first to third two-cell terminals or a one-cell type air-fuel ratio sensor having a single cell with first and second one-cell terminals, includes: first to third connection terminals for connecting the one-cell or two-cell type air-fuel ratio sensor; a control circuit that is switchable between a two-cell circuit configuration for controlling the two-cell type air-fuel ratio sensor through the first to third connection terminals and a one-cell circuit configuration for controlling the one-cell type air-fuel ratio sensor through the first and second connection terminals; and a control unit that sets a circuit configuration of the control circuit to the one-cell or two-cell circuit configuration. | 11-12-2015 |
20150346138 | PHOTOPATTERNABLE GLASS MICRO ELECTROCHEMICAL CELL AND METHOD - A micro electrochemical cell, a micro electrochemical gas sensor, and a method for fabrication of the micro electrochemical cell are described that include a photopatternable glass substrate, two or more embedded electrodes integrated with through-glass vias, and a gas-permeable membrane lid. In an implementation, a micro electrochemical cell includes a photopatternable glass substrate; at least one recess formed in the photopatternable glass substrate; a plurality of through-glass vias formed in the photopatternable glass substrate, at least one electrolyte disposed in the at least one recess; a wicking layer disposed over the at least one electrolyte; and a lid assembly. | 12-03-2015 |
20150355136 | SOx CONCENTRATION DETECTION DEVICE - To provide an SOx concentration detection device that can detect the SOx concentration in exhaust gas without using a dedicated sensor. As shown in FIG. | 12-10-2015 |
20150362455 | ENCODED BIOSENSORS AND METHODS OF MANUFACTURE AND USE THEREOF - A sensor includes a non-conductive substrate and a circuit on the non-conductive substrate. The circuit includes a primary resistive element on the non-conductive substrate having a first end and a second end, wherein the primary resistive element has a predetermined configuration; a secondary resistive element on the non-conductive substrate having a plurality of taps connected to the primary resistive element at a plurality of predetermined connection points on the predetermined configuration, the plurality of predetermined connection points defining a plurality of unique resistive paths through at least a portion of the predetermined configuration; and the plurality of unique resistive paths having a plurality of resistance values, the plurality resistance values determined using a non-linear distribution function. A sensor is configured to perform at least one of quantitative and qualitative analysis of an analyte in a sample of fluid. | 12-17-2015 |
20150362456 | CONTROL UNIT FOR A GAS CONCENTRATION SENSOR - A control circuit includes a sweep circuit for supplying a sweep current to a gas concentration sensor, a current detection resistor for detecting a sensor current flowing in the gas concentration sensor, a calculation circuit for calculating an impedance of the gas concentration sensor based on the sensor current and an inter-terminal voltage of the gas concentration sensor, and a protective element for suppressing external noise from being applied to the sweep circuit and the calculation circuit. The sweep current is divided to flow in a first protective element and the gas concentration sensor. The sensor current is divided to flow in a second protective element and the current detection resistor. The calculation circuit calculates a loss current flowing to the first protective element or a second loss current flowing to the second protective element and calculates the sensor current based on the calculated current. | 12-17-2015 |
20150362457 | CONTROL UNIT FOR A GAS CONCENTRATION SENSOR - A control unit for a gas concentration sensor, in which a limiting-current flows, includes a voltage control circuit for controlling a sensor voltage, a current detection resistor for detecting a current flowing in the sensor, and a calculation circuit for calculating a temperature of the sensor. The voltage control circuit includes a sweep circuit for supplying a sweep voltage and a voltage supply circuit for supplying the sensor voltage as a feedback voltage. The calculation circuit calculates impedance of admittance based on a current variation and a voltage variation of the sensor and calculates the temperature of the sensor based on a temperature characteristic of the impedance or admittance. The voltage supply circuit controls the sensor voltage in accordance with the temperature of the sensor so that a limiting-current corresponding to the temperature of the sensor flows irrespectively of a gas to be detected. | 12-17-2015 |
20150377816 | DETECTOR FOR DETECTING SODIUM HYPOCHLORITE CONCENTRATION - A detector for detecting sodium hypochlorite concentration includes a first electrode, a second electrode and a processing unit. The first electrode and the second electrode are disposed opposite each other, and are soaked in a sodium hypochlorite solution under detection. An electrical path is formed among the first electrode, the sodium hypochlorite solution and the second electrode. The processing unit, electrically connected to the first electrode and the second electrode, measures a plurality of ions in the sodium hypochlorite solution transmitted in the electrical path to obtain a conductivity of the sodium hypochlorite solution and to accordingly calculate concentration of the sodium hypochlorite solution. Compared to a conventional measurement apparatus adopting an optical detector, the invention not only can be fabricated at low production costs, but also can instantly obtain the detected concentration without involving analysis of an externally connected computer. | 12-31-2015 |
20150377823 | LIMITING-CURRENT TYPE GAS SENSOR, FABRICATION METHOD OF THE LIMITING-CURRENT TYPE GAS SENSOR AND SENSOR NETWORK SYSTEM - A limiting-current type gas sensor includes: an Si substrate ( | 12-31-2015 |
20160003762 | PORTABLE ANALYTICAL DEVICE - A portable analytical device includes a housing, a measuring facility and a processor in the housing, and an electrical connector coupled to the housing and having one end electrically connected to the processor and an opposite end extending outwardly from the housing. The measuring facility is configured to analyze an optical or electrochemical change in the test element having received a liquid sample of the body fluid and to generate measuring values resulting from the analysis. A memory has stored therein software at least a portion of which is executable by the processor to process the measuring values to produce analytical measuring data taking into account calibration values. The electrical connector may be a male universal serial bus (USB) electrical connector, a Type-A USB electrical connector or a mini-USB electrical connector having electrical connections for electrical power, ground, data and ID. | 01-07-2016 |
20160025668 | INSTRUMENTED PACKETS FOR TESTING CHARGE STORAGE DEVICES - A sachet includes a first wing made of a flexible material and having a first perimeter region circumscribing a first central region; a second wing made of the flexible material; a hinge connecting the first and second wings along a common boundary; an adhesive material applied to the perimeter region on the first wing; a first electrically conducting electrode formed on the first wing within the central region of the perimeter region; a second electrically conducting electrode formed on the second wing in a region that is opposed to and in alignment with the first contact area on the first wing; an array of contact pads formed on at least one of the first and second wings; first and second conducting traces electrically connecting first and second groups of one or more contact pads among the array of contact pads to the first and second electrodes, respectively. | 01-28-2016 |
20160047771 | BLOOD GLUCOSE METER WITH LOW COST USER INTERFACE HAVING PROGRAMMED GRAPHIC INDICATORS - A blood glucose meter with a low cost user interface has a color glucose scale that is indexed by indicators programmed according to the user's blood glucose target range through a separating computing device due to the limited meter user interface. The color glucose scale is static and placed adjacent to the indicator such as by being molded into the housing, printed on the housing, or attached to the display. The low cost user interface has a monochrome segmented display with certain segments serving as a plurality of indicators. An indicator scaling module uses the target blood glucose range of the person with diabetes to calculate the blood glucose ranges for each indictor to index the color glucose measurement scale. The indicator scaling module can also assign attributes to the indicator such as flashing. The graphic representation of the user's blood glucose measurement aids in user interpretation. | 02-18-2016 |
20160047775 | SENSING FIELD EFFECT TRANSISTOR DEVICES, SYSTEMS IN WHICH THEY ARE INCORPORATED, AND METHODS OF THEIR FABRICATION - Embodiments of sensing devices include one or more integrated circuit (IC) die, a housing, and a fluid barrier material. Each IC die includes an electrode-bearing surface and a contact surface. One of the die includes an SFET with a sensing electrode proximate to the electrode-bearing surface. The same or a different die includes a reference electrode proximate to the electrode-bearing surface. The die(s) also include IC contacts at the contact surface(s), and conductive structures coupled between the SFET, the reference electrode, and the IC contacts. The housing includes a mounting surface, and housing contacts formed at the mounting surface. The IC contacts are coupled to the housing contacts. The fluid barrier material is positioned between the mounting surface and the IC die. The fluid barrier material provides a fluid barrier between the IC and housing contacts and a space that encompasses the sensing electrode and the reference electrode. | 02-18-2016 |
20160054259 | ANALYZER FOR MONITORING SALT CONTENT IN HIGH RESISTIVITY FLUIDS - An electrochemical polymerization based salt content analyzer configured to determine salt composition in a direct, fast, and serial manner. The salt content analyzer includes three electrodes: a working electrode, a counter electrode and a reference electrode. In operation, the current passing through the electrodes as a sweeping voltage is applied may be analyzed to determine the salt content of the analyte. The working electrode includes an access control mechanism to only expose a fraction of the working length of the working electrode to the outside environment at any given time. The access control mechanism is advanced between tests to expose a fresh portion of the working electrode. Thus, testing may be performed in a serial manner. | 02-25-2016 |
20160061763 | METHOD AND APPARATUS FOR ENCODING TEST STRIPS - A test meter for receiving a test strip comprises:
| 03-03-2016 |
20160061769 | GAS CONCENTRATION DETECTING DEVICE - A gas concentration detecting device includes a gas concentration detecting element and an electronic control unit. The gas concentration detecting element includes a first electrochemical cell and a second electrochemical cell. The electronic control unit is configured to detect the concentration of the sulfur oxide contained in the test gas based on a first detected value correlated with a current flowing through the first electrochemical cell acquired when a first removing voltage is applied to the second electrochemical cell and a measuring voltage is applied to the first electrochemical cell. | 03-03-2016 |
20160061771 | GAS CONCENTRATION DETECTING DEVICE - A gas concentration detecting device includes a gas concentration detecting element and an electronic control unit. The gas concentration detecting element includes a first electrochemical cell. The electronic control unit is configured to detect the concentration of the sulfur oxide contained in the test gas based on a first detected value correlated with a current flowing through the first electrochemical cell acquired when a first predetermined voltage is applied to the first electrochemical cell. The first predetermined voltage is a voltage at which the water and the sulfur oxide contained in the test gas are decomposed in the first electrode of the first electrochemical cell. | 03-03-2016 |
20160146757 | ELECTROPLATING SOLUTION ANALYZING APPARATUS - An electroplating solution analyzing apparatus measures a first current that flows between a counter electrode and a working electrode placed in electroplating solution while depositing metal on the working electrode by applying a set first voltage between a reference electrode and the working electrode and then measures a second current that flows between the counter electrode and the working electrode with a cycle set in advance while dissolving the metal deposited on the working electrode into the electroplating solution by applying a second voltage, which changes at a rate set in advance, between the reference electrode and the working electrode. During measurement, the first voltage is changed in a range set to produce a current density within a current density range set in advance. An analysis process then analyzes the state of the electroplating solution based on the values acquired by measurement. | 05-26-2016 |
20160161446 | LOW SLOPE PH ELECTRODE WITH CHARGE TRANSFER COMPONENT - An aspect provides a low slope electrode device, including: a low slope measuring electrode for placement in an external sample solution, said low slope measuring electrode comprising: an electrode disposed within a glass container including an internal buffer solution and at least partially enclosing the electrode of the low slope measuring electrode, the glass container having two pH sensitive regions; an external buffer container including an external buffer solution and at least partially enclosing one of the two pH sensitive regions; and a separating element that separates the two pH sensitive regions; wherein: a first pH sensitive region of the glass container permits charge flow between the internal buffer solution and the external sample solution; a second pH sensitive region of the glass container permits charge flow between the internal buffer solution and the external buffer solution; the separating element, the first pH sensitive region, and the second pH sensitive region establish a charge flow circuit through the internal buffer solution, the external buffer solution, and the external sample solution; and the charge flow circuit acts as a voltage divider for the low slope measuring electrode. Other aspects are described and claimed. | 06-09-2016 |
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