| Patents for G01R 15 - Details of measuring arrangements of the types provided for in groups , or (13,411) |
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| 08/04/1992 | US5136236 Arrangement for voltage measurement in a gis installation |
| 08/04/1992 | US5136235 Rugged fiber-optical current sensor based on the faraday effect |
| 08/04/1992 | US5136234 Digital high-voltage meter device |
| 08/04/1992 | CA1306008C Current sensing |
| 08/01/1992 | CA2040549A1 Multi-function, multi-mode switch for an instrument |
| 07/28/1992 | US5134361 Opitcal system for linearizing non-linear electro-optic |
| 07/23/1992 | WO1992012432A1 A current sensor device |
| 07/22/1992 | CN2110953U Safety ac isolation electric source |
| 07/21/1992 | US5132608 Current measuring method and apparatus therefor |
| 07/15/1992 | CN1062792A Current sensor device |
| 07/08/1992 | CN2109573U Wide measuring range small current pincerlike meter |
| 07/07/1992 | US5128950 Low noise pulsed light source using laser diode |
| 07/07/1992 | US5128608 Optical instrument transformer |
| 07/01/1992 | EP0493271A1 Measuring bridge for reference voltage for a device for monitoring and measuring the insulation of a DC electric network |
| 07/01/1992 | EP0492261A2 A pickup coil for measurement of magnetic fields |
| 07/01/1992 | CN2108933U Portable multifunctional tester for electricity affair of railway |
| 06/30/1992 | US5125744 Optical measurement device |
| 06/30/1992 | US5125743 Instrument for measuring solar magnetic fields |
| 06/27/1992 | CA2058380A1 Reference voltage measuring bridge for a device for monitoring and measuring the insulation of a dc voltage electrical mains system |
| 06/25/1992 | WO1992010772A1 An arrangement for use with high voltage equipment |
| 06/23/1992 | US5124642 Power line post insulator with dual inductor current sensor |
| 06/23/1992 | US5124635 Voltage imaging system using electro-optics |
| 06/23/1992 | US5124634 Ring optical current transducer |
| 06/23/1992 | CA1304130C Current measuring device |
| 06/17/1992 | EP0490711A1 Electrical measuring device with two configurations of connection |
| 06/17/1992 | DE4133508C1 High voltage measurement transducer for gas insulated HV switchgear - has coil in recess of internal conductor having transmission circuit for conversion of digitised electrical signal to light signal |
| 06/16/1992 | US5122733 Variable color digital multimeter |
| 06/11/1992 | DE4139854A1 Bipolar processing circuit showing polarity of signal to be measured - uses inverter and rectifier to give positive deflection on measuring display |
| 06/09/1992 | US5120943 Method of and apparatus for setting a measuring instrument |
| 06/03/1992 | CN2106374U Electron megohm-multitester |
| 06/03/1992 | CN1061662A Improved automatic function selecting multimeter |
| 06/02/1992 | US5119024 Optical device for sensing magnetic inductions |
| 06/02/1992 | US5119019 Automatic function selecting multimeter |
| 05/27/1992 | EP0487174A2 Improved automatic function selecting multimeter |
| 05/26/1992 | US5115533 Toothbrush with voltage tester |
| 05/26/1992 | CA1301842C2 Optical interface for a magneto-optical current transducer |
| 05/13/1992 | EP0484618A1 Automatic scaling for display of modulation domain measurement |
| 05/12/1992 | US5113131 Voltage measuring device having electro-optic sensor and compensator |
| 05/05/1992 | US5111189 Fault indicator with timing control |
| 05/05/1992 | US5111135 Method for optically measuring electric field and optical voltage/electric-field sensor |
| 04/29/1992 | CN1060719A Simple testing unit for digital integrated circuit |
| 04/23/1992 | DE4033400A1 Current measuring arrangement for synchronously clocked power converter - safeguards transformer prim. current proportional voltage by Zener diode shorting switch closed in synchronism with clock |
| 04/22/1992 | EP0481104A1 Transducer for electricity meter |
| 04/21/1992 | US5107447 Abnormality diagnosing system and method for a high voltage power apparatus |
| 04/21/1992 | US5107204 Low temperature coefficient shunt for current measurement |
| 04/21/1992 | US5107202 Fiber optic current monitor for high-voltage applications |
| 04/21/1992 | US5107201 High voltage oscilloscope probe with wide frequency response |
| 04/15/1992 | CN1016288B Circuit for measuring capacity of battery |
| 04/14/1992 | US5105146 Current sensor and method for determining the current flow in conductors to be evaluated |
| 04/09/1992 | DE4031560A1 Integrated current sensor for current limiting and measuring - has components sensitive to magnetic field and excitation paths formed by film technique on substrate |
| 04/08/1992 | EP0479008A2 Current measurement apparatus |
| 04/08/1992 | CN1060157A Optical indication using method in product and curcuit |
| 04/07/1992 | US5103164 Optical current transformer |
| 04/07/1992 | US5103163 Current transducer |
| 04/01/1992 | EP0477415A1 Optical current transducer |
| 04/01/1992 | CN2100630U Ac/dc electricity testing device |
| 03/25/1992 | EP0477087A1 Device for processing a signal originating from a sensor having a differentiating response |
| 03/25/1992 | EP0441898A4 Optical sensing apparatus and method |
| 03/25/1992 | CN2099979U Photoelectric coupled micro-electric quantity sensor |
| 03/24/1992 | US5099357 Optical sensor |
| 03/22/1992 | CA2051882A1 Device for processing the output signal of a derivative type response sensor |
| 03/18/1992 | EP0475880A2 Magnetic automotive lamp current sensor |
| 03/17/1992 | US5097203 Method and circuit for producing an input variable for a cross-coil indicating device |
| 03/17/1992 | US5097202 Faulted current indicators with improved signal to noise ratios |
| 03/12/1992 | DE4028614A1 Measuring large currents with electricity meter - using Hall element in slotin annular ferrite core with main conductor forming current loop |
| 03/11/1992 | EP0474089A2 Multimeter having a range switch |
| 03/11/1992 | EP0474088A2 Method for measuring different variables and multimeter for performing same |
| 03/11/1992 | EP0474086A2 Multimeter having at least three input connections |
| 03/11/1992 | EP0474085A2 Multimeter for measuring different quantities at will |
| 03/11/1992 | CN1059406A Multimeter with at least three input connections |
| 03/10/1992 | CA1296919C Distributed sensor array and method using a pulsed signal source |
| 03/05/1992 | DE4027805A1 Portable multimeter with rotary measurement range selector - has rim which extends towards edges of face for ease of operation by thumb of one hand |
| 03/05/1992 | DE4027804A1 Measurement method using multimeter protected against over voltge - measuring one or more voltages and determining whether to switch to lower range |
| 03/04/1992 | EP0473429A2 Optical magnetic-field sensor and method of producing the same |
| 03/03/1992 | US5093625 Electrostatic spray gun voltage and current monitor with remote readout |
| 02/11/1992 | US5087810 Fiber optic magnetic field sensor |
| 02/11/1992 | CA1295682C Electric current measurement |
| 01/29/1992 | EP0468830A2 Safety box for high-voltage-operated sign |
| 01/29/1992 | EP0468632A2 A narrow bandwidth pulsed light source and a voltage detection apparatus using it |
| 01/29/1992 | CN1058309A Composite admittance device |
| 01/22/1992 | EP0467620A2 Optical magnetic-field sensor |
| 01/21/1992 | US5083221 Optical unit having means for electrically shielding electrooptical |
| 01/21/1992 | US5083081 Current sensor for an electronic trip device |
| 01/15/1992 | CN2093399U Pen shape avometer |
| 01/14/1992 | CA1294335C Cmos voltage divider circuits |
| 01/14/1992 | CA1294331C Measuring system that allocates a measured value to a measurable variable and measurement transducer therefor |
| 01/09/1992 | DE4021358A1 Measuring electric current in conductor - measuring Lorentz force exerted on magnets producing homogeneous magnetic field perpendicular to conductor |
| 01/08/1992 | EP0464638A2 Oligonucleotide analogues with terminal 3'-3' or 5'-5'-internucleotide linkages |
| 01/08/1992 | EP0464076A1 Apparatus and method for measuring electric current in conditions of high interference. |
| 01/08/1992 | EP0464021A1 Measuring device with auxiliary electrode for a gas-insulated, encased high-voltage installation. |
| 01/07/1992 | US5079730 Process and apparatus for the evaluation of timing signals with periodic components or pulse sequences |
| 01/02/1992 | EP0463860A2 Faulted circuit detector having isolated indicator |
| 01/02/1992 | EP0263154B1 Multimeter |
| 01/01/1992 | CN2092102U Device for preventing fraudulent use of high-voltage electricity |
| 12/31/1991 | US5077520 High impedance voltage indicator having capacitive voltage divider |
| 12/31/1991 | US5077450 High-voltage electrical test terminal |
| 12/27/1991 | EP0462626A1 Travelling wave sampler |
| 12/26/1991 | WO1992000580A1 Faulted circuit detector having isolated indicator |
| 12/26/1991 | CA2041861A1 Faulted circuit detector having isolated indicator |
| 12/24/1991 | CA1293538C Magnetic coupling electric current measuring apparatus |