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| Number | Title | Issue Date |
| 8063644 | Impedance measurement of a pH electrode A method of measuring impedance of a pH electrode is provided. A test current is applied to the pH electrode for a time duration that is less than 50 percent of a time constant that is associated with electrical characteristics of the pH electrode. A voltage respons... | 11/22/2011 |
| 7924017 | Measuring device, measuring probe, and method of operating the measuring device The measuring device has at least one measuring probe, e.g., a physical or electrochemical measuring probe, which is equipped with one or more memory units and which is connected through a cable, e.g., a coaxial cable, to a transmitter which includes a processor. Th... | 04/12/2011 |
| 7649358 | Signal processing circuit comprising ion sensitive field effect transistor and method of monitoring a property of a fluid A signal processing circuit includes an ion sensitive field effect transistor, a reference electrode for the ion sensitive field effect transistor, a metal oxide semiconductor transistor having its gate coupled to the reference electrode, and a biasing circuit. The ... | 01/19/2010 |
| 7511504 | Method and device for monitoring a reference half cell A method for monitoring a reference half cell, which forms with a measuring half cell a potentiometric measuring point for determining and/or monitoring an ion concentration of a medium. The ion concentration of the mediums determined on the basis of at least one me... | 03/31/2009 |
| 7394263 | Sensor arrangement with a plurality of potentiometric sensors The sensor arrangement includes: a least two sample chambers; at least two potentiometric FET-sensors, especially ISFET-sensors or ChemFET-sensors, having, in each case, a sensitive surface section, wherein each sensitive surface section lies in flow connection with... | 07/01/2008 |
| 7393442 | Ex-situ PEM fuel cell testing: towards visualizing gas diffusion The invention comprises novel apparatuses and testing methods for evaluating a fluid diffusion component. The apparatus includes a fluid capable of undergoing oxidation or reduction, a half-cell electrode assembly able to receive the fluid, and a change in acidity i... | 07/01/2008 |
| 7378852 | Measuring device having a plurality of potentiometric electrode pairs situated on a substrate A measuring device having a plurality of potentiometric electrode pairs situated on a substrate is described. One of the electrodes of each electrode pair represents a reference electrode and the other electrode represents a pH-sensitive working electrode. The elect... | 05/27/2008 |
| 7362110 | Measurement cell for liquids A cell for the measurement of resistivity and/or permittivity of a liquid, under variable ac frequency energizing, preferably includes a first set of n+1 metal plates interleaved with a second set of n places, both sets of plates preferably being of the same size an... | 04/22/2008 |
| 7348783 | Multi-functional pH meter and fabrication thereof A multi-functional PH meter and the fabrication thereof are disclosed. The multi-functional pH meter immediately displays the measurement result on a liquid crystal display and saves in a compact flash card so as to provide portable functionality. In addition, the m... | 03/25/2008 |
| 7347925 | Biosensor for monitoring an analyte content with a partial voltage generated therefrom A biosensor for monitoring an analyte content with a partial voltage generated therefrom is provided. The present biosensor includes a chip having a resistance Rs, a power source, and a microprocessor. The power source is used for supplying an applied vol... | 03/25/2008 |
| 7325555 | Rinsing device for a sensor probe A rinsing device for a sensor has a cylinderlike rinsing chamber which has an anterior chamber part connectable to a measuring fluid container and which is configured to receive an immersion tube that contains a sensor and is coaxial with as well as movable along th... | 02/05/2008 |
| 7322370 | Device for monitoring a wash process A device is provided for monitoring a wash process inside a mechanical washing apparatus, comprising sensor means for measuring physical and/or mechanical parameters of the wash process and recording means for recording the measured parameters within the device. Thi... | 01/29/2008 |
| 7323840 | Magnetic-pole detecting system for synchronous AC motor and magnetic-pole detecting method therefor A magnetic-pole detecting system for synchronous AC motors and a magnetic-pole detecting method therefor are provided. The magnetic-pole detecting system for synchronous AC motors includes a position detector 10 for detecting the relative position between the... | 01/29/2008 |
| 7316700 | Self optimizing lancing device with adaptation means to temporal variations in cutaneous properties A lancing device, an embodiment of which controls the advancement and retraction of a lancet by monitoring the position of the lancet in conjunction with a lancet controller which incorporates a feedback loop for modulating the lancet driver to follow a predetermine... | 01/08/2008 |
| 7313966 | Method and apparatus for storing vacuum gauge calibration parameters and measurement data on a vacuum gauge structure A method and apparatus for measuring gas pressure by combining an ionization gauge with at least one other vacuum sensor. Nonvolatile memory coupled to the vacuum gauge contains calibration parameters unique to each individual sensor based on factory calibration. Th... | 01/01/2008 |
| 7291502 | Method for performing a non-invasive blood gas test A non-invasive blood gas test is carried out by a method that utilizes a venous blood sample together with a pulse oximeter and a plurality of mathematical equations. The method generates the following data points of the blood: (i) the pH level; (ii) the [H+] concen... | 11/06/2007 |
| 7290434 | Method and device for determining the condition of a measuring probe An exemplary method is disclosed which serves to determine a condition of at least one measuring probe which is integrated in a process vessel of a process system with one or more system stages and which is cleaned from time to time using, for example, CIP- and SIP ... | 11/06/2007 |
| 7287318 | Biosensor A biosensor is provided that comprises a plate element with a pre-determined reaction zone and a recess positioned adjacent to the reaction zone. The biosensor also comprises a reagent that is positioned on the reaction zone. In preferred embodiments, the recess cir... | 10/30/2007 |
| 7263964 | Oil sensor mounting structure Of a sensing part and a mounting part of an oil level sensor mounted to a sensor mounting opening at a bottom portion of an oil pan of an engine, an undersurface of the mounting part exposed to the outside of the oil pan is located above the lowest part of the oil p... | 09/04/2007 |
| 7239147 | Method and device for inspecting secondary battery precursor and method for manufacturing secondary battery using the inspection method A method for testing a precursor of a secondary cell with high reliability and high efficiency to judge the precursor to be acceptable or defective. The current flowing when a test voltage is applied between a pair of electrodes is measured before an electrolyte is ... | 07/03/2007 |
| 7206624 | Hydration monitoring circuitry for pH sensors The present invention pertains to an apparatus for evaluating the signal strength from the pH sensor to determine whether the sensor is hydrated sufficiently to accurately measure pH. This is accomplished by utilizing circuitry that periodically sends a low voltage ... | 04/17/2007 |
| 7195704 | Determination of sample volume adequacy in biosensor devices Methods and systems are provided for determining whether a volume of biological sample is adequate to produce an accurate electrochemical analyte concentration measurement. Certain such methods and systems provide the additional function of compensating for a sample... | 03/27/2007 |
| 7189314 | Method and apparatus for quantitative analysis A sensory apparatus including a substrate including a plurality of sensors to obtain an analyte profile, the sensors including an ion-selective sensor capable of measuring ion content and a chlorine sensor capable of measuring chlorine content, is disclosed. A metho... | 03/13/2007 |
| 7186379 | Continuous real-time measurement of aqueous cyanide This invention provides a method and system capable of the continuous, real-time measurement of low concentrations of aqueous free cyanide (CN) using an on-line, flow through system. The system is based on the selective reactivity of cyanide anions and the character... | 03/06/2007 |
| 7183117 | Apparatus for measuring characteristics of chemical solution, chemical solution supply apparatus, and method for measuring concentration of chemical solution A supply apparatus for preparing a mixed chemical solution of a predetermined mixing ratio at a low cost and for supplying the mixed chemical solution stably. The supply apparatus includes a measuring apparatus located on an intermediate portion of a flow channel th... | 02/27/2007 |
| 7176692 | Measuring probe for potentiometric measurements A measuring probe for potentiometric measurements has a housing (2) formed of an electrically insulating material that encloses at least one hollow space (8, 10) containing a half-cell element defining a first electrode. At least one additional electro... | 02/13/2007 |
| 7150284 | Device for monitoring a wash process A device is provided for monitoring a wash process inside a mechanical washing apparatus, comprising sensor means for measuring physical and/or mechanical parameters of the wash process and recording means for recording the measured parameters within the device. Thi... | 12/19/2006 |
| 7109729 | Method for analysis of a working fluid using impedance spectroscopy An on-line method for determining the condition of low conductivity working fluids using alternating current, electro-impedance spectroscopy is provided by making measurements over a range of frequencies at temperatures at or above 50° C. ... | 09/19/2006 |
| 7072742 | Accurate blending module and method An accurate blending module for retrofitting existing laboratory or industrial systems or use as a standalone device and a method of use. The module includes a proportioning submodule that receives and merges at least two liquid feeds. The merged stream flows to a b... | 07/04/2006 |
| 7038459 | Oil deterioration detection apparatus An oil deterioration detection apparatus includes a sensor, an evaluation circuit, and a malfunction detecting circuit. The evaluation circuit has a determination circuit. The malfunction detecting circuit has a resistor and a switch. The evaluation circuit evaluate... | 05/02/2006 |
| 7022219 | Automated system for continuously and automatically calibrating electrochemical sensors An electrochemical sensor system that continuously monitors and calibrates the sensors included in the system. The invention also includes a method for determining failure patterns of a sensor and incorporating into an electrochemical sensor system the ability to re... | 04/04/2006 |
| 7010864 | Terminal examination jig A terminal examination jig 10 includes a jig body 12 having a gauge receiving portion 13 and a terminal holding portion 20, and a limit gauge 28 releasably supported pivotally on a support pin 14 extending through the gauge ... | 03/14/2006 |
| 7009376 | SnOISFET device, manufacturing method, and methods and apparatus for use thereof A SnO2 ISFET device and manufacturing method thereof. The present invention prepares SnO2 as the detection membrane of an ISFET by sol-gel technology to obtain a SnO2 ISFET. The present invention also measures the current-voltage cur... | 03/07/2006 |
| 6992488 | Self-cleaning probe system A self-cleaning oxidation-reduction potential (“ORP”) probe system includes an ORP electrode (11), a flow cell (12) surrounding the ORP electrode, and a plurality of cleaning beads (17) contained in the flow cell in a manner in which they ar... | 01/31/2006 |
| 6969468 | Method and apparatus for isolating a component from a fluid mixture The present invention relates to an apparatus and method for measuring a particulate characteristic of a particulate-containing fluid, in particular for monitoring the particulate content of lubricating or hydraulic fluids in a mechanical system in order to diagnose... | 11/29/2005 |
| 6931327 | System and methods for processing analyte sensor data Systems and methods for processing sensor analyte data, including initiating calibration, updating calibration, evaluating clinical acceptability of reference and sensor analyte data, and evaluating the quality of sensor calibration. During initial calibration, the ... | 08/16/2005 |
| 6924477 | Method and system for establishing the cleanliness of a device A system and method for establishing the cleanliness of a device by performing a test is described. The system includes an ion mobility spectrometer to measure target signal strengths, and to measure n2≧1 test signal strengths of a device sample. The sy... | 08/02/2005 |
| 6911621 | Biosensor A method of forming a biosensor is provided. The method includes providing a substrate and a cover including first and second surfaces, positioning a reagent on the substrate, carving a channel by laser ablation in the first surface, and coupling the first surface o... | 06/28/2005 |
| 6905896 | SnO2 ISFET device, manufacturing method, and methods and apparatus for use thereof A SnO2 ISFET device and manufacturing method thereof. The present invention prepares SnO2 as the detection membrane of an ISFET by sol-gel technology to obtain a SnO2 ISFET. The present invention also measures the current-voltage cur... | 06/14/2005 |
| 6906523 | Method and apparatus for testing cells and batteries embedded in series/parallel systems A “three-point” measurement technique effectively removes system effects to determine impedance, admittance, resistance, or conductance of an individual cell, battery, or interconnecting conductor embedded in a series or series-parallel electrochemical battery o... | 06/14/2005 |
