초록 ▼

Apparatus for status detection, in particular leak detection, in pipelines for the transportation of media, in particular, steam or hot water. The pipeline respectively comprises an inner medium-carrying pipe (1), an adjoining heat-insulating layer (2), and a outer protective pipe (3). Disposed in t

Apparatus for status detection, in particular leak detection, in pipelines for the transportation of media, in particular, steam or hot water. The pipeline respectively comprises an inner medium-carrying pipe (1), an adjoining heat-insulating layer (2), and a outer protective pipe (3). Disposed in the region of the heat-insulating layer (2) is at least one sensor unit (4) with an induction coil (5) and a moisture and/or temperature dependent sensor (7). An interrogation device (20), which includes an exciter coil (25) with a transmitting device (22), a receiving device (23), and an evaluation device (24), permits interrogation of the condition of the sensor unit (4). The interrogation device can be portable, coupled to a lap-to, or can be in the form of a stationary fitment above the sensor unit (4).

대표청구항 ▼

[ What is claimed is:] [1.] A pipeline with apparatus for status detection, in particular leak detection, comprising:an inner medium-carrying pipe (1) for the transportation of a medium, a heat-insulating layer (2), and an outer protective pipe (3),at least one sensor (4), which includes a sensor de

[ What is claimed is:] [1.] A pipeline with apparatus for status detection, in particular leak detection, comprising:an inner medium-carrying pipe (1) for the transportation of a medium, a heat-insulating layer (2), and an outer protective pipe (3),at least one sensor (4), which includes a sensor device (7) responsive to at least one of moisture level and temperature level, and an induction coil (5) arranged in the region of the heat-insulating layer (2);the sensor device (7) and the induction coil (5) form a resonating circuit whose resonance properties depend on the state of the sensor device (7) as a result of the conditions (moisture, temperature) prevailing in the heat-insulating layer; andan interrogation device (20) which includes a frequency generator (26), an exciter coil (25), and an evaluation device (24) and can be brought into a position near the sensor (4) to feed electromagnetic radiation thereto, the resonance properties of the sensor resonating circuit being detected.