REGISTRIERANLAGE

There is a number of measuring points, each signal being measured by one independent measuring unit each. The recording system contains a linear differential transformer (39, 40, 41) and a zero detecting and amplifier stage (36), the output of which is connected to a servo motor (35). The servo motor (35) moves, on the one hand, the iron core (41) of the linear differential transformer and, on the other hand, a write head (37) for recording the change in the measured electrical signal. Such a recording system largely avoids measuring errors. There is an individual write head for each measuring point. The write heads are constructed in such a manner that the written points are at the same location for the same measurement value.