Rated Operating Distances
The rated sensing distance (Sn) is a theoretical value which does not take into account such things as manufacturing
tolerances, operating temperature, and supply voltage.
The effective operating distance (Sr) is measured at nominal supply voltage at an ambient temperature of 23 °C ± 0.5°. It
takes into account manufacturing tolerances. The effective operating distance is ± 10% of the rated operating distance.
The useful switching distance (Su) is the switching distance measured under specified temperature and voltage conditions.
The useful switching distance is ± 10% of the effective operating distance.
The guaranteed operating distance (Sa) is any switching distance for which an operation of the proximity switch within
specific permissible operating conditions is guaranteed. The guaranteed operating distance is between 0 and 81 % of the
rated operating distance.