Protective Design
A sensor capability describes the ability of a proximity sensor to operate reliably in the presence of hot metal spatter and electromagnetic noise from welding operations. This weld slag immunity is achieved through the use of non-stick coatings and robust housing materials that prevent slag from adhering to the sensor face. It is crucial for sensors used in robotic welding cells where accumulation of metal residue can cause premature failure or false signals.
This feature ensures continuous operation without the need for frequent manual cleaning or replacement.
Field Durability
Field durability is enhanced by using special fluorocarbon coatings that resist thermal shock and mechanical wear from the hot spatter. If slag does adhere, it can cause false triggers or damage the sensor face.
Testing Environment
Testing for this immunity involves exposing the sensor to actual or simulated welding arcs and measuring the change in the sensing distance and output state. The sensor must maintain its performance without any degradation in its sensing range or response time.
Rejection Ratio
Calibration verification ensures that the internal electronics are not affected by the strong magnetic fields generated during the welding process. This testing is performed in accordance with international industrial automation standards.
