The method involves using a number of transducers (SG) equidistantly spaced around the shaft, with a gap (GL) without transducers. The time interval parameters (T(n)) of the signal pulses (SI) output from sequential transducers is determined, and one time ...

The range of a transmitter (5) assigned to a transmitter wheel (1) is scanned. An average time for the measured range is detected in an evaluation unit (18). A scanning frequency (21) has access to successive storage cells (13.1,13.2) in a memory (13) in o...