The Reeling Drum is designed to measure extension and angle. The reeling drum provides an increasing voltage linearly proportional to boom extension from zero to maximum length it is rated for, increasing voltage linearly proportional to boom angle from -8 to 90 degrees, and a low current two-conductor electrical path intended for use with Anti Two-Block switches.
Measures boom extension
Measures boom angle
provides signal to Anti Two Block Switches
A single layer of cable provides accurate measurement over the entire extension range.
Shielded signal cable provides connection for sensor power and signals to and from the Reel
The Mounting Plate at the rear of the Extension Reel provides a three hole triangular pattern to ensure that the orientation of the Extension Reel is correct.