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8841925 Method for testing a laboratory device and correspondingly equipped laboratory device  
The invention relates to devices for liquid level detection (LLD). It relates to a laboratory device having an electronic circuit for detecting a liquid level in a liquid container, a feeler,...
8773106 Capacitance detection in electrochemical assay with improved sampling time offset  
A method and a system are provided to determine fill sufficiency of an electrochemical biosensor test cell by determining capacitance of the electrochemical test cell. In particular, the system...
8618817 Device and method for determining at least one parameter of a medium  
The invention relates to a device for determining at least one parameter of at least one medium, said medium being introducible into at least one measuring path. An electric and/or electromagnetic...
8451007 Input circuit for inductive measurements of the conductivity of a fluid medium  
Exemplary embodiments of the invention include an input circuit for electromagnetic (inductive) measurements of the conductivity of liquids. The input circuit and the induction coil are directly...
8441250 Method and apparatus for monitoring electrical properties of polymerization reactor wall film  
Disclosed is a method for using at least one static probe during polymerization in a fluid bed polymerization reactor system to monitor a coating on a surface of the reactor system and a distal...
8274293 Apparatus and method for measurement of pH over a wide range of pressure  
A sensor for measuring the pH of a solution of the present invention includes: (a) a tubular body portion constructed from a flexible electrically-insulating material, the tubular body portion...
8242792 Impedance measurement system and method  
The impedance of ionic solutions may be determined using a bridge circuit where the ionic solution forms one leg of the bridge circuit and a reference impedance characterized by a reference time...
8058885 Porous medium electrical conductivity sensor  
There is provided a sensor for measuring a quantity, such as the salinity, of the soil solution without requiring continuous calibration. The sensor is based on a porous material which...
7901611 Method for predicting and optimizing system parameters for electrospinning system  
An electrospinning system using a spinneret and a counter electrode is first operated for a fixed amount of time at known system and operational parameters to generate a fiber mat having a...
7902838 Sensor device for determining a fluid property  
A sensor device (10) for making at least one determination regarding a selected characteristic of a fluid includes a support post (32) that is adapted to be exposed to the fluid. A capacitor has...
7859273 Sensor for detecting organic liquids  
A sensor for detecting the presence of an organic liquid. The sensor includes an a elongate substrate having a first and second opposed surface, and a first sensor surface disposed on at least a...
7808227 Systems and methods for detecting impurities in reactor systems  
The present invention is directed to various methods and systems for detecting at least one impurity in a bulk fluid. In certain embodiments, the methods are performed in conjunction with a...
7795883 Grid sensor  
A grid sensor including grids of electrode wires for measuring the electroconductivity of flow medium in the cross-section of a pipeline is particularly suitable for applications where the flow...
7780842 Apparatus and method for determining the zeta potential of surfaces for the measurement of streaming metrics related thereto  
Methods and apparatuses for measuring streaming metrics. A method for measuring a streaming metric corresponding to a rotating surface is characterized by rotating the surface around an axis of...
7733097 Method for determining a property of a fluid for a household device  
Method for determining a property of a fluid for a household device includes the following steps: measurement of a physical variable of the fluid associated with the property of the fluid, in each...
7716965 Electrochemical sensor having suspended element counter electrode and deflection method for current sensing  
An electrochemical suspended element-based sensor system includes a solution cell for holding an electrolyte comprising solution including at least one electrochemically reducible or oxidizable...
7535232 Field-effect device for the detection of small quantities of electric charge, such as those generated in bio-molecular process, bound in the vicinity of the surface  
The device (1) allows the detection of small quantities of electrical charge (Qs) utilised for recognition of the gybridisation process of a single strand of DNA. It comprises a chip (2) in which...
7459896 Electrode configuration for LiMCA  
The present invention provides a method and apparatus for reducing electromagnetic noise pick up in a Liquid Metal Cleanliness Analyzer (LiMCA), used to detect and measure particles in molten...
7368922 Method and device for determining parameters of fluctuating flow  
The invention relates to a method and a device for determining the parameters of a fluctuating flow of a fluid in a pipe, wherein at least three electrodes that are placed at a distance from one...
7362105 Integrated microstructure sensor element for detecting thermodynamic variables of a fluid  
An integrated microstructure sensor element is proposed for detecting thermodynamic measured variables of a fluid. To that end, a supporting body, particularly a board or a wafer having at least...
7312611 Apparatus and method for trapping bead based reagents within microfluidic analysis systems  
The present invention provides an on-chip packed reactor bed design that allows for an effective exchange of packing materials such as beads at a miniaturized level. In accordance with the present...
6879162 System and method of micro-fluidic handling and dispensing using micro-nozzle structures  
Described are a method and system for dispensing a fluid. A fluid-dispensing device includes a substrate and a plurality of nozzles formed in the substrate. Each nozzle has an open-ended tip and a...
6741083 OSCILLATING DEVICE FOR THE DETERMINATION OF THE PURITY OF SINGLE OR MULTI-COMPONENT LIQUIDS FROM THEIR DIELECTRIC PERMITTIVITY, IN A CONTINUOUS WAY AND THROUGH FREQUENCY CHANGES IN THE STATIC PERMITTIVITY REGION AND AN ASSOCIATED MEASUREMENT PROCEDURE  
An oscillating device to determine the purity of single or multi-component liquids on the basis of their dielectric permittivity, in a continuous procedure through the frequency change in the...
6624621 Particle counter volume sensor  
A particle counter volume sensor for sensing by the electrical resistance puplse method the volume of particles in a fluid suspension passing through an orifice assembly which includes an orifice...
6614234 Electric discharge machine  
An electric discharge machine for machining a workpiece by an electric discharge by supplying a machining fluid to a gap between an electrode and the workpiece and supplying pulses to the...
6542100 Apparatus and method for filtering a signal which represents a digital data stream  
A signal to be produced, which represents a digital data stream, is generated using the currents or voltages from current or voltage sources selected from multiple current or voltage sources. The...
6522149 Method and apparatus for identifying plastics  
Waste plastics, which contain coloring agents and are in various forms, are heated and electrified to divide into three groups in order to collect them without crushing while maintaining their...
6515481 Streaming current detector with easily removable matched sleeve and piston set  
A streaming current detector having a probe in which dielectric elements used to generate the streaming current—specifically, a sleeve for slideably receiving a reciprocating piston and the piston...
6204668 DC/RF blood cell detector using isolated bridge circuit having automatic amplitude and phase balance components  
A differential DC/RF bridge-configured flowcell particle detector includes a flowcell and an adjustable circuit model of the flowcell, which are differentially coupled through output amplifier...
6107803 Streaming current sensor  
A streaming current sensor on which the placement of the sample outlet lower on the vertical axis than the sample inlet so as to increase the accuracy, reliability, and sensitivity of the sensor...
5760298 System and method for monitoring debris in a fluid  
A system for monitoring debris in a fluid by detecting electrostatic charges associated with the fluid. Both the electrostatic characteristic of the fluid and of the debris are sensed and then...
5705930 Gas path electrostatic sensor  
A sensor installable within a gas turbine engine for sensing electrostatic charge therein. The sensor comprises a sensing plate and first and second shielding plates. The sensing plate has a first...
5616872 Particle size and charge measurement in multi-component colloids  
A method and device is disclosed for determining the distribution of charge and size in a colloidal system. The arrangement disclosed is adapted to measure these characteristics in an...
5598099 System and method for coincidence detection of ungrounded parts with detectors located within and outside a production coating area  
A system and method for coincidence detection of ungrounded or inadequately grounded parts during the electrostatic coating process in order to improve production flow, provide an overall cost...
5591896 Solid-state gas sensors  
Solid state gas sensors are provided, the use of which permits quantitative measurement of gaseous contaminants or change of composition of a gas or atmosphere being monitored. The gas sensor...
5540845 Method of and apparatus for monitoring aqueous streams  
A metallic indicator electrode senses the anionic charge per unit time borne by the dispersed phase of a stream of an aqueous dispersion of negatively charged particles by virtue of the potential...
5529675 Electrostatic coalescer testing apparatus  
The invention is an electrostatic coalescer testing apparatus for testing the ability of chemical additives to facilitate electrostatic coalescence of water in a water hydrocarbon-containing...
5502389 Apparatus for polyelectrolyte measurement with an ultrasonically driven liner  
An apparatus for automated polyelectrolyte measurement in process materials comprises a sample vessel with an outer wall defining a cylindrical cavity and with a reservoir of larger diameter above...
5480511 Method for contactless real-time in-situ monitoring of a chemical etching process  
A contactless method and apparatus for in-situ chemical etch monitoring of an etching process during etching of a workpiece with a wet chemical etchant are disclosed. The method comprises steps of...
5450744 Contamination monitoring system  
A contamination monitoring system for monitoring contaminants in a liquid, comprising a first electrical conductivity sensor, a second electrical conductivity sensor, a filter and a pump, the...
5408185 Apparatus for automated polyelectrolyte measurement  
Apparatus for automated polyelectrolyte measurement of liquid process materials including a sample vessel which defines an electrically insulating, cylindrical cavity below a larger-diameter...
5361034 Apparatus for measuring the conductivity of a fluid  
An apparatus for measuring the conductivity of a fluid is disclosed. The invention 10 provides both a contact and non-contact monitoring of fluid conductivity by measuring the A.C. dielectric...
5329236 Apparatus for estimating charged and polarized states of functional groups in a solution  
An apparatus for detecting an electrostatic force in a solution includes a sample and a cantilever. An end of the cantilever is conductive and has voltage applied to it. The apparatus detects...
5280250 Method and apparatus for measuring ζ potential of a substance at high temperature  
The invention describes a novel device to measure ζ-potentials of substances at high temperatures. The device involves packing the substance to be measured into a "RULON" (polytetrafluoroethylene...
5246590 Water treatment to reduce fog levels controlled with streaming current detector  
A system is disclosed for controlling the amount of treatment composition, e.g., cationic coagulant, to be introduced into an aqueous medium, e.g., a laundry waste water, having a content of...
5245290 Device for determining the size and charge of colloidal particles by measuring electroacoustic effect  
An apparatus for determining the particle charge and size distribution of particles in suspensions of arbitrary concentration is provided. The apparatus includes a cell for application of an...
5220283 Calibration of streaming current detection  
In a streaming current detector, a standard calibration solution is used to calibrate the streaming current signal representing the charged condition in a sample fluid containing particles. The...
5202016 Streaming current detector with head-creating passageway and fluid treatment system using same  
A device for detecting and monitoring the charge condition of finely divided solid charged particles in a fluid-flow is so devised as to accept the continuous and full volumetric flow of the fluid...
5136247 Apparatus and methods for calibrated work function measurements  
A method of making a calibrated measurement of the contact potential difference between a probe electrode and the surface of a sample surface involves the use of a reference standard. The...
5121061 Phase correction for streaming current signal  
In a streaming current signal, a zero crossing circuit tracks the phase of the streaming current signal. A latch is clocked in response to the outputs of the zero crossing signal to compensate the...

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