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Einstellungen

Einstellungen

1. US20110083958 - Measuring device

Anmerkung: Text basiert auf automatischer optischer Zeichenerkennung (OCR). Verwenden Sie bitte aus rechtlichen Gründen die PDF-Version.

Claims

1. A measuring device comprising a protective cover and a sensor arranged in the protective cover, wherein the protective cover comprises a carrier tube closed on one end and made of metal, wherein a first coating made of an aluminum non-wettable material is arranged on an outer surface of the carrier tube, and wherein a second coating made of an aluminum-wettable material is deposited on the first coating.
2. The measuring device according to claim 1, wherein the sensor is a temperature sensor.
3. The measuring device according to claim 2, wherein the temperature sensor is a thermocouple.
4. The measuring device according to claim 1, wherein the carrier tube is made of titanium or martensitic or ferritic stainless steel.
5. The measuring device according to claim 1, wherein the aluminum non-wettable material comprises essentially at least one oxide.
6. The measuring device according to claim 5, wherein the aluminum non-wettable material comprises essentially aluminum oxide or magnesium oxide or a mixture thereof.
7. The measuring device according to claim 1, wherein the aluminum non-wettable material is an insulator or electron conductor.
8. The measuring device according to claim 1, wherein the aluminum-wettable material comprises essentially at least one transition metal boride.
9. The measuring device according to claim 8, wherein the aluminum-wettable material comprises essentially a boride selected from the group TiB 2, ZrB 2, HfB 2, and mixtures thereof.
10. The measuring device according to claim 1, wherein the aluminum-wettable material is coated with a metal.
11. The measuring device according to claim 10, wherein the aluminum-wettable material is coated with aluminum.
12. The measuring device according to claim 1, wherein each of the coatings has a thickness of 50 to 1000 μm.
13. The measuring device according to claim 1, wherein the protective cover is connected to a cooling-gas source.
14. The measuring device according to claim 1, wherein the cooling-gas source is connected to a interior of the carrier tube.
15. A melting device, particularly for production of aluminum, comprising a melt container having at least one busbar and a measuring device according to claim 1, wherein the aluminum-wettable material of the measuring device is connected by a connection cable in an electrically conductive way to the at least one busbar.
16. A method for measurement in salt, cryolite and/or aluminum melts, wherein the measurement is taken by a measuring device according to claim 1.