INITIAL CONVERTERS UNIT OF HOLE MAGNETOMETER-INCLINOMETER Russian patent published in 1996 - IPC

FIELD: geophysics; measurement technology. SUBSTANCE: device has three motionless ferroprobes fixed rigidly in case of hole device, rotating frame with load disposed off-center, pendulum with coil fixed to axis of pendulum in horizontal, set of three mutual orthogonal output coils. Coil fixed at pendulum is connected inductively with ac generator. As a result, device is free from axial collector and precision of orientation of coil is improved. Set of three orthogonal flat coils permits to calculate value of zenith angle and angle of rotation of case of hole device with high precision at wide temperature range. EFFECT: improved precision of measurement; improved reliability. 1 dwg