| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
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| 10/08/1987 | WO1987006010A1 Capacitive sensor and metal detector for detecting concealed objects |
| 10/08/1987 | WO1987006009A1 Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium |
| 10/08/1987 | DE3611413A1 Method and circuit arrangement for digital, integrated, phase-sensitive detection of electronic signals |
| 10/07/1987 | CN87100833A Method of measuring impedance, especially low-voltage capacity impedance |
| 10/06/1987 | US4698584 Method and ohmmeter for measuring very low electric resistances |
| 09/30/1987 | EP0239268A2 Fault point locating method, fault point resistance measuring method, and impedance to fault point measuring method, and apparatus therefor |
| 09/22/1987 | CA1227246A1 Method and device for measuring phase jitter on a transmission channel |
| 09/16/1987 | EP0237171A2 Inductance divider sensor |
| 09/16/1987 | EP0236876A2 Apparatus and method for high-frequency signal measurement |
| 09/16/1987 | EP0236710A1 Method for testing the operatability of paralleled load resistors |
| 09/15/1987 | CA1226898A1 Method and apparatus for measuring soil salinity |
| 09/11/1987 | WO1987005392A1 Method of non-destructive quality control of carbon articles |
| 09/09/1987 | CN86207705U Multifunctional digital resistance meter with 3.5 bit |
| 09/08/1987 | US4692695 Conductivity-type sensor |
| 09/08/1987 | US4692299 Testing sensor signal processors |
| 09/02/1987 | EP0234112A1 Six-port reflectometer test arrangement |
| 09/02/1987 | EP0234111A1 Six-port reflectometer test arrangement |
| 09/01/1987 | US4690152 Apparatus for epithelial tissue impedance measurements |
| 08/27/1987 | WO1987005169A1 Signal processing system |
| 08/26/1987 | CN86203489U Dynamic monitoring digital type micro-ohm meter |
| 08/20/1987 | DE3604875A1 Method and appliance for testing the electrical charging device, especially of motor vehicles, which comprises a generator and a battery |
| 08/13/1987 | DE3639070A1 Method for measuring the ratio of a measurement-quantity-dependent capacitance and a reference capacitance and device for carrying out the method |
| 08/12/1987 | EP0231609A2 Pure water conductivity sensor |
| 08/11/1987 | US4686628 Electric device or circuit testing method and apparatus |
| 07/30/1987 | WO1987004525A1 Plated sensor for monitoring corrosion or electroplating |
| 07/29/1987 | CN86108479A Capacity measuring circuit |
| 07/28/1987 | US4683418 Moisture measuring method and apparatus |
| 07/28/1987 | US4683417 Method and apparatus for rapidly testing capacitors and dielectric materials |
| 07/28/1987 | CA1224845A1 Method of measuring a frequency domain characteristic |
| 07/28/1987 | CA1224744A1 Cathodic protection system |
| 07/22/1987 | EP0229505A1 A method of measuring a cable delay time |
| 07/22/1987 | CN86208365U Automatic measuring and testing unit for dc parameter of multiple core cable |
| 07/21/1987 | US4682113 Pure water conductivity sensor |
| 07/14/1987 | US4680538 Millimeter wave vector network analyzer |
| 07/08/1987 | EP0228153A1 Apparatus for detecting degradation of an arrester |
| 07/08/1987 | CN85106709A Method and instrument for measuring volume resistance of electrostatic-proof rubber or plastics |
| 07/02/1987 | WO1987003987A1 Method and apparatus for detecting and locating leaks in geomembrane liners |
| 07/01/1987 | EP0227496A1 Thin film resistance measuring device |
| 07/01/1987 | EP0226716A2 Capacitive position transducer system |
| 07/01/1987 | CN86207339U Universal test meter with megaohm-measuring capacity |
| 06/30/1987 | US4677522 Electrode for measuring the relative permittivity of a substance |
| 06/24/1987 | EP0226570A2 Measuring device and tube connection with method of producing the same |
| 06/24/1987 | EP0226082A1 Capacity measuring circuit |
| 06/23/1987 | US4675596 Digital fluid analyzer using capacitive sensing |
| 06/17/1987 | CN86108324A Pure water conductivity sensor |
| 06/16/1987 | US4673869 Dielectric constant detector capacitance matching |
| 06/09/1987 | US4672226 Redundant resistance temperature detector power supply system |
| 06/04/1987 | WO1987003378A1 Adaptive impedance mismatch detector system |
| 06/02/1987 | CA1222546A1 Apparatus and method for determining the value of a capacitance |
| 05/27/1987 | EP0223748A1 Method and apparatus for determining the content of unburnt coal in an ash from a combustion heater |
| 05/27/1987 | CN86206128U In-circuit capacitance testor |
| 05/26/1987 | US4669051 Vector network analyzer with integral processor |
| 05/20/1987 | EP0222161A2 Process, circuit and apparatus for capacitance measurements for very low frequencies |
| 05/20/1987 | EP0221965A1 Bridge for absolute measurement of the capacity and conductance of semi-conductor test-pieces |
| 05/19/1987 | US4667149 Precision nondestructive testing of metals |
| 05/06/1987 | EP0220900A2 Method and apparatus for testing sensor-signal processors |
| 05/05/1987 | US4663586 Device with automatic compensation of an ac attenuator |
| 05/05/1987 | CA1221416A1 Very weak electric resistance measuring ohmmeter |
| 04/29/1987 | EP0219991A2 R F interferometer |
| 04/28/1987 | US4661768 Capacitance transducing method and apparatus |
| 04/28/1987 | US4661767 Vector network analyzer with integral processor |
| 04/16/1987 | DE3532214A1 Method for determining the modes existing in a waveguide, and an arrangement for carrying out the method |
| 04/15/1987 | EP0217965A1 Display for reflection characteristics of complex transmission |
| 04/09/1987 | WO1987002212A1 Wrist strap ground monitor |
| 04/09/1987 | WO1987002142A1 High precision capacitance bridge |
| 04/09/1987 | DE3534189A1 Measuring circuit arrangement for measuring very small changes in the active and/or reactive value of an object being measured, particularly of an electronic component |
| 04/08/1987 | EP0216941A1 Apparatus for analysing two-channel transmission/reflection characteristics |
| 04/02/1987 | DE3534462A1 Warning device for detecting damage on moving parts |
| 04/01/1987 | EP0216474A2 Probe for measuring and/or for exercising a control in dependence upon the value of a characteristic of a material, and method of using said probe |
| 03/31/1987 | US4654861 Method and device for measuring phase jitter on a transmission channel |
| 03/31/1987 | US4654810 Facility for determining delay variations |
| 03/31/1987 | US4654585 Phase detection method |
| 03/31/1987 | CA1219931A1 Method and apparatus for monitoring suitability of a transmission path for transmission of digital data signals |
| 03/24/1987 | CA1219634A1 Detection of ground faults in ungrounded dc power supply systems |
| 03/18/1987 | CN85106569A Method for accurately measuring the relative conductivity of sea water and the absolute conductivity of solutions |
| 03/17/1987 | US4651086 Apparatus and method for determining the resistance of a coil connection of an electric motor winding |
| 03/11/1987 | EP0214015A1 High-frequency impedance measuring apparatus |
| 03/11/1987 | EP0213530A1 Process for the contact resistance measurement of electrical conductor connections in a network of conductors connected in parallel, and measuring arrangement therefor |
| 03/10/1987 | US4649374 Electrostatic system monitor and method therefor |
| 03/10/1987 | US4649341 Inductive measuring arrangement for determining the position of a movable core member |
| 03/03/1987 | US4648087 Capacitive sensing employing thin film inductors |
| 03/03/1987 | US4647845 Apparatus and method for utilizing an AC detection scalar network analyzer with a CW signal source |
| 02/26/1987 | DE3540031A1 Arrangement for monitoring a variable electrical resistance |
| 02/25/1987 | EP0211711A1 Method and device for the rapid reflectometric testing of passive components in the VHF range |
| 02/24/1987 | US4646248 Insulation analyzer apparatus and method of use |
| 02/24/1987 | US4646070 Oil deterioration detector method and apparatus |
| 02/24/1987 | US4646000 Method and apparatus for measuring soil salinity |
| 02/17/1987 | US4644486 Vector network analyzer with integral processor |
| 02/17/1987 | US4644259 Nondestructive testing of multilayer ceramic capacitors |
| 02/12/1987 | DE3625819A1 Method and device for contactlessly measuring the resistivity of semiconductor wafers |
| 02/10/1987 | US4642555 Differential capacitance detector |
| 02/10/1987 | US4642554 Fail-safe electrical-ground indicator |
| 02/04/1987 | EP0210876A1 Resistance-measuring method for measuring very low electric resistances |
| 02/03/1987 | US4641086 Vector network analyzer with integral processor |
| 02/03/1987 | US4641085 Vector network analyzer with integral processor |
| 02/03/1987 | US4641082 Six-port reflectometer |
| 01/27/1987 | US4639831 Sensor for detecting an amount of rain |
| 01/27/1987 | US4639569 Weld resistance measuring apparatus for a spot welder |
| 01/21/1987 | CN86101617A Capacitance measuring method and apparatus |
| 01/20/1987 | US4638399 Wrist strap ground monitor |