摘要 |
A magnetic sensor array 100 for determining the position of at least one movable component, such as a sliding sleeve, with respect to a fixed component of a downhole tool includes at least one conductor member 104 having a plurality of contact regions spaced apart at first intervals of at least a first length along a longitudinal axis of said at least one conductor member and a plurality of magnetic sensors 102, each one of which is operably coupled to one of said plurality of contact regions and actuatable by a magnetic field from a magnetic actuator. |