TURCK has pioneered the design and development of inductive proximity sensors that not only survive such environments, but also remain fully operative. Read below for details.
Weld Field Immunity
Many critical applications for proximity sensors involve their use in weld field environments. AC and DC resistance welders used in assembly equipment and other construction machines often require in excess of 20 kA to perform their weld function. Magnetic fields generated by these currents can cause false outputs in standard sensors.
Turck has pioneered the design and development of inductive proximity sensors that not only survive such environments, but remain fully operative in them.
The limit of the weld field immunity depends on the kind of field (AC or DC), the housing size of the sensor, and its location in the field. For example, in an AC or DC weld field, the "/S34" inductive sensors can be positioned one inch from a 20 kA current carrying bus.