| 摘要 |
A filling level detector for cryogenic liquids which are located in a container (1) uses a probe with a superconductor. In order to provide a filling level detector which is insensitive and costs little, the probe (11) is a flat conductor (20) which comprises a plurality of conductors which are routed parallel in a plastic matrix (21), of which a first conductor (23) is a super conductor, second conductors (24) are used to supply heating current to the first conductor (23), and third conductors (25; 25, 26) are used for voltage measurement, with the conductors in one pair (24, 25, 26) each being connected to points (27, 28 and 29, 30) which are at a distance from one another in the longitudinal direction of the probe. The probe is guided in a guide in the container.
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