FIELD: testing engineering.
SUBSTANCE: device comprises instrument for receiving magnetic flux branched from the face, measuring instrument made of Hall pickup, low-frequency amplifier and filter, and measuring instrument composed of controller, inverter, and indicating unit. The output of the Hall pickup is connected with the input of the amplifier, output of the amplifier is connected with the input of the filter, output of the filter is connected with the input line of the controller through the inverter. The outputs of the controller are connected with the indication unit.
EFFECT: enhanced reliability.
3 dwg
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