Patents
Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286)
12/1992
12/02/1992CN2123773U Multi-purpose testing pen
12/01/1992US5168239 Method and apparatus for adjusting the threshold for determining the thickness of or the number of sheets in a sheet material
11/1992
11/30/1992CA2089392A1 Method and apparatus for simultaneous differential scanning calorimetry and microdielectrometry
11/29/1992WO1992021983A1 Apparatus and methods for measuring the dielectric and geometric properties of materials
11/29/1992CA2088240A1 Apparatus and methods for measuring the dielectric and geometric properties of materials
11/26/1992DE4217108A1 Induktiver sensor Inductive sensor
11/26/1992DE4116468A1 Inductive conductivity measurement cell, esp. for liquids - has conducting loop passed through transmission and reception coils for AC signals and resistances which can be switched into loop
11/25/1992EP0515291A1 Signal conditioning circuit arrangement for digital insulation controller
11/25/1992EP0514839A2 Circuit for measuring capacity
11/25/1992CN2123081U High-voltage megohmmeter with anti-jamming performance
11/24/1992US5165292 Device for measuring characteristic of a fluid
11/22/1992CA2068952A1 Isolation monitoring and measuring device for an electrical power system with isolated neutral
11/18/1992CN2122393U Static electricity grounding fault alarm
11/18/1992CN1019147B Method of and circuit for ohmmeter calibration
11/17/1992CA1310368C Circuit element measuring apparatus
11/17/1992CA1310367C Electrochemically controlled superconductivity
11/12/1992WO1992019939A1 Dynamic and contactless measurement of displacement or permittivity using a capacitive sensor
11/12/1992WO1992019153A1 Method and apparatus for displaying multi-frequency bio-impedance
11/11/1992CN2121695U Ground resistance admeasuring apparatus
11/11/1992CN2121694U High-voltage megger with delayed short-circuit protection function
11/11/1992CN1066121A Dynamic and non-contact measurement of displacement or of permittivity by use of capacitive sensor
11/10/1992CA1310127C Potentiometer setting detection by measuring the ratio of rc time constants
11/10/1992CA1310064C On-line web internal resistivity measuring apparatus
11/09/1992WO1992020194A1 Signal quality monitoring system
11/09/1992CA2102404A1 Signal quality monitoring system
11/03/1992US5160893 Method of measuring semiconductor lead inductance by changing the dielectric constant surrounding the lead
10/1992
10/29/1992WO1992018856A1 Integratable conductivity measuring device
10/28/1992EP0511137A1 Procedure and apparatus for measuring and monitoring the electrical isolation of an active system
10/28/1992EP0511046A1 Device for estimating electromagnetic properties of a material at elevated temperatures
10/27/1992US5159276 Capacitance measuring circuit and method for liquid leak detection by measuring charging time
10/27/1992US5159274 Device and methods for measuring the quality of contact between two electrical conductors
10/27/1992CA1309462C Method and apparatus for determining the rotor resistance of a rotating-field machine
10/22/1992DE4113033A1 Integrierbare leitfaehigkeitsmessvorrichtung Integrable conductivity
10/21/1992EP0509915A1 Process and appliance for measuring a capacitor
10/21/1992EP0509731A2 Electrostatic sensor apparatus
10/21/1992EP0509091A1 Automated breakout box for automotive testing
10/21/1992EP0508992A1 Process and device for determining amplitude and phase values according to a reflectometric measurement process.
10/20/1992US5157338 Measuring a voltage standing wave ratio of a signal
10/20/1992US5157337 Dielectric constant measurement probe assembly and apparatus and method
10/20/1992US5157332 Three-toroid electrodeless conductivity cell
10/20/1992CA2066380A1 Material high temperature electromagnetic characteristic evaluating device
10/15/1992WO1992017949A1 Process for finding the transmission properties of an electric line
10/14/1992EP0449967A4 Device for automatically ascertaining capacitance, dissipation factor and insulation resistance of a plurality of capacitors
10/13/1992US5155445 Vernier voltage-to-digital converter with a storage capacitance selectable in magnitude
10/13/1992CA1308568C Transmitter with vernier measurement
10/07/1992CN2118312U Auxiliary installation for pretesting q value of h-shape ferrite
10/06/1992US5153525 Vehicle detector with series resonant oscillator drive
10/01/1992DE4209761A1 Verfahren zum ermitteln der uebertragungseigenschaften eines elektrischen systems Method for determining the electric system of a uebertragungseigenschaften
09/1992
09/30/1992CN1064948A Multifunction insulating monitor
09/30/1992CN1064947A Measurement circuit
09/30/1992CN1018484B Ratimetric measurement circuit with improved noise rejection
09/28/1992CA2106973A1 Process for finding the transmission properties of an electric line
09/22/1992US5150063 Bridge for measuring the reflection coefficient
09/22/1992US5150062 Electrostatic capacitance sensing circuit
09/22/1992US5150057 Continuous monitoring system of the electrical conduction of a mains system
09/16/1992EP0503272A1 Circuit arrangement for measuring the capacitance ratio of two capacitors
09/16/1992CN2116224U Isolation monitoring and alarming apparatus
09/16/1992CN2116223U Digital isolation resistance meter with automatically adjustable range
09/15/1992US5148126 Capacitance sensor circuit and method for measuring capacitance and small changes in capacitance
09/15/1992US5148125 Dielectric constant monitor
09/15/1992US5148107 Inductive proximity switch means and method
09/09/1992EP0502807A2 A method and a device for measuring the conductance of a fluid
09/09/1992EP0354214B1 Process for determining the electrical duration of signal paths
09/09/1992EP0332652B1 Method and apparatus for locating leaks in a multiple layer geomembrane
09/08/1992US5146412 Method and means for sensing a change in capacitance by a computer
09/08/1992US5146174 Switching arrangement method and apparatus for making parameter measurement and adjustment of coupled dual resonator crystals using both resonator ports
09/03/1992WO1992015020A1 Instrument for measuring electrical resistance
09/02/1992EP0501680A1 Signal conditioning circuit for trigger probe
09/02/1992EP0263848B1 Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium
09/02/1992CN2114835U 电安测量仪 An electric meter
09/02/1992CN2114834U Multimeter with megaohm range
09/01/1992US5144252 Method and apparatus for transducer measurements on a metallic pair
09/01/1992US5144250 Power amplifier time domain reflectometer
08/1992
08/26/1992CN1018027B Automatic dielectic-loss and capacitance measure instrument for power plants
08/19/1992EP0499429A2 Superconductor quench measuring system
08/18/1992US5140273 Electrode system to facilitate dielectric measurement of materials
08/18/1992US5140272 Method of semiconductor surface measurment and an apparatus for realizing the same
08/12/1992CA2060921A1 Superconductor quench measuring system
08/11/1992US5138268 Thickness measuring system for nonconducting materials
08/11/1992US5138264 Apparatus for measuring electrical conductivity
08/06/1992DE4103200A1 Measurement transducer for physical parameters - has two sensors e.g. capacitive, inductive or resistor sensors, and changeover switch selecting on sensor at time for connection to evaluation circuit
08/06/1992DE4102657A1 Operating inductive distance sensor
08/06/1992DE4102655A1 Operating inductive distance sensor
08/05/1992EP0496934A1 Method for using an inductive distance sensor
08/05/1992EP0437532A4 Composition monitor and monitoring process using impedance measurements
08/05/1992CN2112159U Dielectric loss angle and electric capacity meter with preventing strong electric field interference
08/04/1992US5136262 Oscillator circuit and method for measuring capacitance and small changes in capacitance
08/04/1992US5136252 Apparatus and methods for evaluating resistive bodies
08/04/1992US5136251 Capacitance measurement
08/04/1992US5136249 Probes for measurement of moisture content, solids contents, and electrical conductivity
08/04/1992CA1306008C Current sensing
07/1992
07/31/1992CA2060345A1 Method of operating an inductive distance sensor
07/30/1992DE4038160A1 Detecting mismatch on feed line between radio transmitter and aerial - using directional couplers and generating AC voltage corresp. to waves propagated in both directions
07/29/1992EP0496254A1 Measuring device for electrical measuring of resistance and method therefore
07/29/1992EP0496147A1 Method of precise measurement of small resistance values
07/29/1992CN1017655B Inductor/capacitor quality factor and loss measurer
07/28/1992US5134380 Icing detector and method
07/28/1992US5134376 A solution specific conductivity meter and method for use
07/22/1992CN1017553B Measurement of capacitance and parameters related thereto
07/21/1992US5132631 Glass surface coating detector