The application is for directional sensing of the wheel flanges of railway wheels.
Due to the mass of a metal flange over the double wheel sensor across the
rolling wheel there is an occupying of the two individual systems. This leads to a
change in the internal resistance of the DSS- systems, and this is evaluated in a
downstream evaluation device (ABG).

The arrangement of the two DSS systems is selected such that pulses overlap
due to the occupying. Therefore they can be used for directional axle counting
and/or direction-dependent switching commands
(→ Figure 1).

The installation of the sensor should be at the inner rail section, 45 mm below the railhead (in accordance with a new rail).

Normally the DSS is delivered without the reduction plate assembly, but there is
the possibility to install the double wheel sensor with a reduction plate. This
option is necessary if a reduction plate at this point can help due to high
anticipated rail currents. This should be clarified prior to installation