Full definition
Sensor or switch that detects excessive lateral belt displacement and triggers an alarm or automatically stops the conveyor to prevent structural damage and spillage. Installed at conveyor ends and critical intermediate points. Types: mechanical lever, inductive sensor, lateral roller sensor. Reference: CEMA. Required in mining conveyors per NOM-023-STPS (Mexico) and DS 72 (Chile). Must be manually reset to prevent accidental restart after activation.