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Installation and Electrical Connection
5.4 Switching distance
• The switching distance described in the data sheet is the nominal switching distance Sn according to the
standard.
• The switching distance refers to a standard measuring plate (material: steel, thickness: 1 mm,
side lengths: 3× Sn or outside diameter sensor).
• The switching distance according to the standard is further differentiated into:
– Effective switching distance Sr
– Useable switching distance Su
– Working distance Sa
Standard measuring plate
Useable switching distance S u max
Effective switching distance S r max
Nominal switching distance S n
Effective switching distance S r min
Useable switching distance S u min
Working distance S a
Sensing face
(safely switched on)
NOTE!
• If the objects in the application are smaller than the standard measuring plate, the
switching distance is also reduced.
• The correction factor of the sensor for certain materials also influences the switching dis-
tance and must be observed.
• The sensor should be mounted at a working distance Sa or less to the object.
