Nominal sensing distance / Sn

The characteristic value of a proximity sensor, without consideration of production tolerances and variations due to temperature and voltages.

Non-flush mounting

The non-flush mountable sensors are designed for applications, in which the medium to be monitored comes in direct contact with the sensor. In such level monitoring systems, the sensor head is completely immersed in the powder, granulate or liquid. Alternatively detection through a glass or plastic wall.

Real sensing distance / Sr

The sensing distance determined at +20 °C and rated voltage. Here the series variance is taken into consideration. Variation max. 10 % +/- of Sn.

Reduction factors

For materials other than metals (e.g. FE 360 or ST 37, Al, Cu) or water, the reduction factors shown in the table on page 6 of the KAS catalogue should be taken into consideration.

Series- and parallel connection

It is possible to connect the proximity sensors in series or parallel. When considering this it must be taken into account that the voltage drops are added for series connection and the residual voltages for parallel connection. Under these circumstances it is advisable to operate a maximum of three sensors in a corresponding circuit.

Switching hysteresis

The difference between the switch-on and switch-off point of a proximity sensor, when approaching or moving away from the standard measuring plate.