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7169273 |
Enzyme electrode
Disclosed is an enzyme electrode comprising an electrode system comprising an insulating substrate having formed thereon a working electrode, a counter electrode and optionally a reference...
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7078910 |
Fluid formulation evaluation and improvement utilizing broad spectrum impedance spectroscopy
A method and apparatus for evaluating and improving the properties of fluid formulations is disclosed. The inventive concept employs impedance spectroscopy (IS) measurements and data analyses to...
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7068054 |
Real-time carbon sensor for measuring concentration profiles in carburized steel
An alloy solute sensor probe, measurement system and measurement method are disclosed for directly measuring solute concentration profiles in conductive material components at elevated processing...
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6965240 |
Apparatus and methods for analyzing particles using light-scattering sensors and ionization sensors
Apparatus and methods are disclosed for analyzing particles, such as coarse particulates, fine particulates (e.g., diesel particulate matter), and combustion aerosols, using light-scattering...
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6811663 |
Microelectrode system
A microelectrode system suitable for use in preparative and analytical chemistry having a laminated structure with one or more apertures. In one embodiment a microelectrode system ( 1 ) comprises...
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6718819 |
Oil quality sensor system, method and apparatus
An apparatus for determining the condition of engine lubricating oil includes a sensor having a plurality of spaced apart electrode pairs on a nonconductive polymer film. The sensor is operatively...
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6614242 |
Method and device for oil-in-water measurement
A method and a sensor ( 1 ) for oil-in-water measurement, in particular for the oil industry. In an electric measuring cell ( 7, 12 ) a capacitance is measured as a measure of an oil concentration...
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6577134 |
Sensor and sensor system for liquid conductivity, temperature and depth
Liquid conductivity and temperature are measured in respective sensitivity fields that are collocated—i. e., in volumes that nearly match by mathematical, geometrical, or functional criteria....
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6478948 |
Method of monitoring and controlling corrosion of furnace boiler tubes
A method for monitoring and reducing corrosion in furnace boiler tubes measures electrochemical noise associated with corrosion mechanisms while corrosion is occurring at the surface of the tubes...
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6147504 |
Rod-shaped capacitive probe having sheet-like electrode
A robust probe (1) which can be installed simply and without special tools and can be produced at low cost is provided, said probe having an essentially rod-shaped probe housing (2), which has an...
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5589482 |
Benzo-thiophene estrogen agonists to treat prostatic hyperplasia
Benzothiophenes and related compounds of the formula ##STR1## are estrogen agonists which are useful for treating prostatic and diseases, obesity and bone loss in male animals.
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5510702 |
Method and apparatus for simultaneous measuring the streaming potential of a fiber suspension and a filtrate thereof
A method and apparatus for simultaneously measuring the streaming potential of a fiber suspension and a filtrate thereof. A container is provided having an inlet and an outlet for the flow of fiber...
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5483166 |
Electrochemical test cell for conductivity and transport measurements
An electrochemical test cell for measuring conductivity and transport properties of a solid or liquid electrolyte comprises a longitudinal chamber, produced, e.g., from a syringe, a pair of...
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5444379 |
Electric conductivity measuring cell
An electric conductivity-measuring cell comprises a pressure container serving also as an outer electrode and provided with an inlet port of a liquid to be measured and an outlet port and an inner...
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5391839 |
Device for the electrically insulated attachment of a metallic probe electrode in the opening of a housing
A device is proposed for the electrically insulated attachment of a metal probe electrode in the opening of a housing, preferably a measuring probe for measuring the filling status in the opening...
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5363695 |
Leak detection system and method for detecting and measuring liquid leaks
A system and method for detecting leaks in a storage tank that includes a stored tank liquid and an immiscible test liquid, and there is an interface formed between the tank liquid and the test...
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5286357 |
Corrosion sensors
A corrosion sensor (1), apparatus for detecting corrosion of a surface incorporating the sensor, a structural assembly (1,21) incorporating the sensor and method for detecting corrosion of a...
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5272921 |
Probe for monitoring liquid
A probe for monitoring a liquid level has a one-piece insulation sheath extended within the probe casing and positioned far beyond the end of a contact pressure spring that is removed from the...
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5091152 |
Apparatus for electrically destroying targeted organisms in fluids
The invention pertains to a method and apparatus for destroying a predetermined living organism in fluid, whereby a predetermined current having a specific waveform and frequency is applied to the...
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5089780 |
Oil quality monitor sensor and system
A sensor and system for monitoring the accumulation of contaminants in oil wherein the contaminants have an electrical conductivity which is different from the oil. An electrochemical cell is used...
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4894604 |
Fluid capacitance sensing means and method
A fluid capacitance sensor includes a device, receiving a stream of fluid, which converts the fluid flow to annular fluid flow. A capacitance sensing network has an internal capacitance...
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4887023 |
Capacitive sensor and circuit for detecting contamination of guard electrode
An apparatus for detecting contamination of a capacitive sensor, comprising a guard electrode surrounding a portion of the sensor, and a circuit for supplying an excitation signal to the sensor and...
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4808931 |
Conductivity probe
A four-electrode open-cell conductivity sensor for measuring the conductivity of ocean water. A simplified version of the conductivity sensor may be used as a standard conductivity cell for...
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4767995 |
Conductivity cell with adjustable concentric electrodes
A conductivity cell is presented having a solid inner electrode and a hollow electrode whereby the inner electrode is adjustably mounted. The adjustable feature allows the cell to be accurately...
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4707378 |
Method and apparatus for controlling the organic contamination level in an electroless plating bath
An electroless plating bath is selectively cleaned of organic contaminants. The organic contaminants are detected by measuring the capacitance between a working electrode and counter electrode with...
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4691169 |
Electrode assembly especially adapted to utilizing a magnetic field for measuring electric conductivity of treated non-polar liquids
A unique electrode assembly primarily designed to pass an induced current through a liquid phase by transfer of molecules adsorbed on sub-micron charged particles from cathode to anode to enable...
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4634982 |
Capacitive measuring element for oscillometric measurement of conductance of streaming solutions and method of determining the dimensions thereof
The invention relates to a capacitive measuring element intended for continuous measurements of conductance in streaming solutions. The essence of the measuring element is that in the measuring...
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4507521 |
High pressure electrical conductivity probe
A high pressure electrical conductivity probe generally used as a liquid level indicator having a high pressure mechanical seal between an insulator and a metal mounting body and an electrode...
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4455531 |
Conductance probe for detection of immiscible liquids
This application teaches a probe for detecting immiscible components in an aqueous system, particularly pollutants that contaminate ponds, rivers and aquifers. The probe includes a casing having an...
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4392110 |
Methods and apparatus for monitoring the condition of dielectric liquid in electric discharge machining
Methods and apparatus for monitoring the condition of dielectric fluid used in EDM are described. A continuous sample of dielectric liquid is withdrawn from a tank containing the EDM electrode and...
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4388043 |
Conductivity dependent pump and process control
Device for activating or inactivating a liquid pump on the basis of the electrical conductivity of a liquid. Device comprises, in combination, a housing having a passageway through which a liquid...
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4301412 |
Liquid conductivity measuring system and sample cards therefor
A system for measuring a parameter of a liquid sample, such as the hematocrit and an approximation of hemoglobin for a blood sample. The system basically comprises a hand-held instrument and a...
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4227151 |
Measurement and monitoring of the electrical conductivity of liquor samples
A measuring cell for use in measuring and monitoring the electrical conductivity of a liquid. The cell comprises at least four concentric circular electrodes which are disposed in a flat or...
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4123701 |
Disposable sample card having a well with electrodes for testing a liquid sample
Disclosed are several embodiments of a disposable sample card for testing fluids such as blood and the like. A generally planar card contains a chamber, or well and supports two insulated...
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4072892 |
Electrolytic measurement system with an inner post and an outer cylindrical shield fluid boundary
An electrolytic measurement system incorporating a probe for the measurement of the conductivity of fluids such as sewage and other industrial effluents. The probe has a smooth surface to passage...
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4068162 |
Rinse tank control system
A control system for a water rinse tank or the like which continuously monitors the rinse water quality by means of electrical conductivity and adds clean water when the water-contamination...
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4032296 |
Electrolytic conductivity detector system
An electrolytic conductivity detector system is disclosed that is particularly useful for gas chromatography. Small gas molecules that will support conductivity are conducted to a gas-liquid...
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4020677 |
Apparatus for determining salinity of fluids
An instrument for determining salt concentration in water by measuring elrical conductivity. A probe of electrical insulating material has one electrode mounted on the exterior surface of the probe...
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3919627 |
Conductivity measuring method and apparatus utilizing coaxial electrode cells
The invention includes an electrode plate having at least one coaxial electrode positioned in an opening therein and insulated therefrom. The surface of the plate and the coaxial electrode lie in...
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3916300 |
Thermally compensated flow-through type electrolytic conductivity cell
A flow-through type conductivity cell is provided having concentric electrodes between which all of the fluid flows so as to obtain quick response to changes in fluid composition by avoiding the...
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3906354 |
Standard conductivity cell for measurement of sea water salinity and temperature
A standard conductivity cell having concentric thin-walled alumina cylinders with a thin film or layer of standard seawater contained between them. Electrical contact is made to the standard...
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3878456 |
Standard conductivity cell for measurement of sea water salinity and temperature
A standard conductivity cell having concentric thin-walled alumina cylinders of different lengths for ease of manufacture, with a thin film or layer of standard seawater contained between them....
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3753098 |
GUARDED OIL TEST CELL WITH TRIAXIAL CONNECTOR
A guarded test cell for power factor measurement of oil including a connector adapted to receive a triaxial extension cable. The cell includes a housing within which a tubular center electrode,...
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3706381 |
CHROMATOGRAPHIC APPARATUS
For liquid chromatographic apparatus where the solute in the eluant exhibits electrochemical properties and the mobile phase is an electrolyte, a detector comprises a first electrode formed of a...
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3457501 |
PROBE FOR MEASURING CONDUCTIVITY OF AN ELECTROLYTE SOLUTION
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3320529 |
Method for testing a dielectric liquid
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3314005 |
Retainer for salinity cell in combination of flow through pipe, nipple and valve
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3161823 |
Device for testing the concentration of an electrolyte in solution
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3134728 |
Process and device for detecting the intensity of ultrasonic energy
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3082372 |
Apparatus for testing electrical resistivity of liquids
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