Level measuring instrument with helical conductor

Details Level measuring instrument with helical conductor Level measuring instrument with helical conductor

G - Physics

01

F

G01F 23/284 (2006.01) H01P 5/02 (2006.01)

Patent

CA 2317794

Provision is made for a level measuring instrument for measuring a level of a filled material (1) in a container (3), in the case of which electromagnetic signals (S) generated by means of an electronic circuit (5) are guided into the container (3) via a waveguide (17) and signals (R) reflected at a filled material surface are guided out, in the case of which an impedance-matching device active in a frequency band of a bandwidth is connected upstream of the waveguide (17). For this purpose, the level measuring instrument comprises an injector (15, 15'),which transmits the signals (S) from the circuit (5) to the waveguide (17), and which has an inner conductor (19), which inner conductor (19) has, for the purpose of increasing the characteristic impedance, a conductor section (45, 45') with a geometry deviating from a cylindrical shape.

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