Microwave leg metering apparatus, method and using

The invention relates to a microwave leg metering apparatus, in particular for measuring characteristics of a material strand (1) of the tobacco processing industry, with a Mikrowellenresonatorgehause (30) with at least one as a microwave resonator (31, 51-51 '' ') formed substantially hollow cylindrical or cuboidal interior ( 32, 52), which is enforceable (by a strand of material 1), said end surfaces (31a, 31b, 51a, 51b) of the microwave resonator (31, 51-51 '' ') (in the axis of symmetry 38, 58) of the microwave resonator (31 ') comprise a central through-openings for a strand of material (1), comprising two antennas (18, 18', 51-51 '', 40, 45, 61, 65, 65 ') adapted for engagement and disengagement of a microwave measuring field in the microwave resonator (31, 51-51 '' ') in the microwave resonator (31, 51-51' '') are arranged. The invention further relates to a method for operating a corresponding strand microwave measuring device, and a use. In the inventive microwave leg metering apparatus includes at least an antenna passes through the microwave resonator (31, 51-51 '' ') from one end surface (31b, 51b) to the other end surface (31a, 51a) is fully and outside of the microwave resonator (31, 51-51' ' ') conductively connected on one side with a microwave generator and / or an electronic measuring system or connectable to and conductively connected at the opposite side with a mass or connectable.