METHOD OF REPRODUCING MAGNETIC INDUCTION IN HYPOGEOMAGNETIC RANGE Russian patent published in 2018 - IPC G01V3/40 

FIELD: measuring equipment.

SUBSTANCE: invention can be used to obtain standard values of magnetic induction of a constant field in the range about ±1000 nTl. Method of reproduction of magnetic induction in hypogeomagnetic range, including compensation of longitudinal and transverse components of magnetic induction of earth local field, includes steps on which a change of reference frequency of phase frequency comparator is performed in accordance with the value of the reproduced magnetic induction and the measurement of the reproduced magnetic induction of the hypogeomagnetic range at the level of doubled value of the magnetic induction of earth local field with subsequent total compensation of the magnetic induction of earth local field under condition of current stabilization in the vertical winding of the reference three-component measure-comparator with relative instability 3⋅10^-7.

EFFECT: extended lower limit of the reproduction range of the magnetic induction unit.

1 dwg