SPINNING PREPARATION MACHINE WITH MICROWAVE SENSORS

摘要

Various improvements to a spinning preparation machine for measurement of the fibre web thickness or fibre web cross-section of at least one fibre web (2) by means of one or several microwave sensors (3, 30) are disclosed. An improvement is characterised by compressing means (18, 19; 28, 64a, 64b, 65; 70; 52) and particularly mechanical guide elements, which can be arranged before, after and/or in the microwave sensor (3, 30). Arrangement of a transport roller pair after a microwave sensor (3) for example, is also disclosed which can particularly be embodied as a feed roller pair (20) for the subsequent drafting work. Suggestions for calibration of the at least one microwave sensor (3, 30) are also made.