DEVICE FOR READING AND RECORDING MAGNETIC DEPTH MARKS Russian patent published in 1994 - IPC

FIELD: mining. SUBSTANCE: device has biasing generator 13, readout unit with mark application unit 2, and magnetic mark sensor in the form of two magnetomodular transducers 1 and 3. The magnetic mark sensor is connected to the input of the device. The mark readout unit is fashioned as five comparators 4-8 of first and second RS-triggers, 11 and 12, first, second, and third AND-gates 9, 10, and 14. 13 -- 3, 1 -- 8 -- 9, 8 -- 10, 3 -- 4, 3 -- 5, 3 -- 6, 3 -- 7, 4 -- 11, 14 -- 2, 5 -- 9 -- 11, 6 -- 10 -- 12 -- 14, 7 -- 12. The device allows to align the point of the readout sensor with the point of regeneration of the mark application unit directly at the center of the magnetic mark. EFFECT: enhanced accuracy of measurements, reduced expenditures for well servicing and prospecting. 3 dwg