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  • Hall gradiometer

    The article deal with gradiometer is designed for remote nondestructive testing of various purposes pipelines. Gradiometer sensor consists of two Hall-effect transducers three-component magnetic field placed at a distance of 1950 mm from each other. The specialized algorithm for reducing transducer’s bias error is used. The gradiometer sensor’s orientation relative to the pipe axis is determinate by the digital microelectromechanical system. The results of measuring the gradient of the magnetic field induction, module, and the coordinates of the sensor are displayed on the LCD display and saved on non-volatile storage.

    Keywords: magnetometry, nondestructive testing, gradient of the magnetic field, the Hall sensor, magnetometer, gradiometer, magnetogram