Safety sensors are used to detect unsafe conditions and transmit signals to devices that alert personnel such as machine operators. Safety sensors attach to many different types of machinery and equipment. Safety sensing devices and safety sensing systems often interface to a computer or programmable logic controller (PLC). They are well-suited for applications and industries that require safety material presence sensing. The most common types of safety sensors are break-a-beam switches, interlocks and tag out devices, perimeter guards, photoelectric safety sensors, safety blocks, safety interlock switches, safety sensor switches, and wireless safety sensors. Many safety sensor suppliers are located across the United States and around the world.
Safety sensors, safety sensing devices, and safety sensing systems use many different technologies. A break-a-beam sensor transmits a signal when a beam of light is interrupted. An interlock or tag out device prevents valves or electrical switches from working when a safety condition is breached.