DYNAMOMETER INDICATOR SYSTEM

摘要

A dynamometer indicator instrument has a closed magnetic ring having an arcuate pole member within the ring connected to the inner periphery of the ring by a shank portion. A field coil surrounds the shank portion, and an armature coil encircles the arcuate pole member and is pivotally mounted at the center of curvature thereof. An indicator pointer moves in response to movement of the armature. The instrument is provided with electrical circuit means for self testing of the instrument as desired and an electrical circuit for zero and range adjustment.