Method and device for monitoring and preparing the sand supply in a sand tank of sand scattering devices in vehicles, in particular rail vehicles

A method of monitoring the sand supply in a sand tank of a sand-scattering device in a vehicle, in particular in a rail vehicle, mainly in an express train, wherein a pulse generator, e.g. a selenium cell, is provided for monitoring the sand-supply level and for indicating the same at an inspection point, in particular in the region of the vehicle driver, for example on the instrument panel, wherein a diagnosis system monitors the one injector via a sand flow fed by a sand-supply line and informs the inspection point on the sand flow flowing past.