Fluke Corporation

Other

Christian Karl Schmitzer

Ronald Steuer

Jeffrey E Worones

Ricardo Rodriguez

Paul Andrew Ringsrud

Peter Radda

David Lawrence Epperson

Michael F Gallavan

Clark N Huber

Patrick Scott Hunter

Klaus E Duftschmid

Christian Strachotinsky

Systems and methods for operating and calibrating electrical parameter measurement devices are provided herein. The devices may include a current sensor that includes a plurality of magnetic field sensors positioned around a measurement area that receive a current carrying conductor under test. The sensor may include a plurality of concentric rings of magnetic field sensors that provide accurate measurements that ignore magnetic fields from conductors or other components outside of the measurement area. The sensors may be used to determine the position of a conductor under test, and such information may be used to produce accurate measurements by accounting for the conductor's position. A calibration system may also be provided that is operative to generate calibration data that is subsequently used to provide more accurate measurements. The calibration data may include one or more lookup tables, coefficients for one or more mathematical formulas, or other types of data.

Non-contact electrical parameter measurement device with radial dual mounted sensors

Systems and methods for operating and calibrating measurement devices are provided herein. The measurement devices generate reference current signals and sense the reference current signals in a conductor under test, which sensed signals are used to determine a calibration factor or a position of the conductor under test. A calibration system may control a calibration voltage source to selectively output calibration voltages in a calibration conductor. The calibration system may obtain data from the electrical parameter measurement device captured by the electrical parameter measurement device when measuring the calibration conductor. Such data may include one or more reference current measurements, one or more voltage measurements, etc. The calibration system utilizes the obtained measurements to generate calibration data which may be stored on the voltage measurement device for use thereby during subsequent operation. The calibration data may include one or more lookup tables, coefficients for one or more mathematical formulas, etc.

Position dependent non-contact voltage and current measurement

Systems and methods provide measurement of alternating current (AC) electrical parameters in an insulated wire without requiring a galvanic connection between the insulated wire and a test probe. Measurement systems or instruments may include a housing that includes both a non-contact voltage sensor and a non-contact current sensor. The measurement system obtains measurements from the voltage sensor and the current sensor during a measurement time interval and processes the measurements to determine AC electrical parameters of the insulated wire. The AC electrical parameters may be presented to an operator via a visual indicator device (e.g., display, lights). The AC electrical parameters may additionally or alternatively be communicated to an external device via a wired and/or wireless communications interface. The measurement system may include an alignment feedback sensor that provides feedback to a user regarding the mechanical alignment of the insulated wire relative to the voltage sensor and the current sensor.

Non-contact electrical parameter measurement systems

Systems and methods for measuring alternating current (AC) voltage of an insulated conductor (e.g., insulated wire) are provided, without requiring a galvanic connection between the conductor and a test electrode or probe. A non-galvanic contact (or 'non-contact') voltage measurement system includes a conductive sensor, an internal ground guard and a reference shield. A common mode reference voltage source is electrically coupled between the internal ground guard and the reference shield to generate an AC reference voltage which causes a reference current to pass through the conductive sensor. At least one processor receives a signal indicative of current flowing through the conductive sensor due to the AC reference voltage and the AC voltage in the insulated conductor, and determines the AC voltage in the insulated conductor based at least in part on the received signal.

Non-contact voltage measurement system using reference signal

Process and system for determining radiation exposure in airplanes The invention pertains to a process for the determination of the radiation load, respectively the dosage (effect) of the radiation prevailing in airplanes with the aid of an algorithm, with which the spectral composition of the encumbering radiation can be determined and which is subject to the altitude as well as the geographical, respectively the geomagnetic longitude and latitude, respectively, that the portions of the individual types of radiation of the locally total spectrum can be determined, or else have been determined. In accordance with the invention, there is provided that aboard the airplane, the (equivalent) dosage (effect) of a single type of radiation, for example, gamma radiation, is determined and is multiplied by the determined portion factor of this type of radiation, with this type of radiation including a portion of the locally expected total spectrum and that the product thereof, as an actual (equivalent) dosage (effect) is indicated or evaluated and/or stored. A system for the noted determination is also set forth.

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Brunn/Gebirge, Austria

Christian Karl Schmitzer