How they work:
With the transducer
mounted at a fixed
position, the extensible
wire rope is attached to
a moveable object. As
movement occurs, the
extension of the wire
rope rotates an internal
capstan and sensing
device to produce an
electrical output signal
proportional to the wire
rope extension and/or
velocity. An internal
torsion spring maintains
tension on the wire rope
and serves as the
retraction mechanism.
The sensing device may
be a precision
potentiometer, digital
encoder or, for velocity
measurement, a
tachometer.
