Safety sensors and safety monitoring systems for bulk material-handling equipment, namely for use in belt conveyors, chain conveyors, paddle conveyors, pneumatic grain conveyors, drag conveyors, salt conveyors, screw conveyors, roller conveyors, hydraulic conveyors, mechanical railed lifting conveyors, pneumatic conveyors for use in transferring of bulk materials, pneumatic conveying systems for transferring bulk materials comprised of high pressure receivers and vacuum receivers, pneumatic c...