Device for textile machine, particularly for spinning preparation machine, such as for drawing frame, or for spinning machine, for measuring length specific mass or dampness of strand form fiber quantity, has microwave resonator

摘要

The device (20) has a microwave resonator (21), which has a measuring room (22), by which the fiber quantity (FB) is passed. A signal generator is provided, which is formed for producing a generator signal, whose spectrum has multiple frequencies. The generator signal is injected into the microwave resonator and an output signal is decoupled from the microwave resonator that is supplied to an evaluating circuit (28). The evaluating circuit is formed for simultaneous determination of the amplitude or the phase of multiple frequencies of the output signal.