4B Australia has introduced the new 4B Bulldog belt alignment and rip detection switches designed to detect dangerous misalignment of conveyors and belt tear damage. The switches are built to withstand harsh industrial environments. Designed as an electro-mechanical system, the belt alignment and rip detection switches can detect horizontal misalignment of belts when contact is made with the roller. The roller arm will be forced to pivot by the belt activating a switch at 15º to trigger an alarm, and initiate a shutdown procedure of the conveyor at 30º. The sensors are usually installed in pairs on opposite sides of the belt.A steel flexible wire is set below the running conveyor belt and attached by a rare earth magnet at each end. If the belt is ripped or damaged, the wire is pulled away releasing the magnet connection, which in turn will activate a switch. Bulldog belt alignment and rip detection switches feature a robust design for use in heavy duty applications such as quarrying and mining.

Easy to install with no requirement for calibration, Bulldog belt alignment and rip detection switches are compatible with 4B’s CBS2 belt alignment monitors as well as Watchdog Elite monitoring systems.

The belt alignment and rip detection switches have been approved for use in hazardous areas according to ATEX.