DE330726C - Thermocouple - Google Patents

Thermocouple

Info

Publication number
DE330726C
DE330726C DENDAT330726D DE330726DD DE330726C DE 330726 C DE330726 C DE 330726C DE NDAT330726 D DENDAT330726 D DE NDAT330726D DE 330726D D DE330726D D DE 330726DD DE 330726 C DE330726 C DE 330726C
Authority
DE
Germany
Prior art keywords
thermocouple
molybdenum
wires
melted
tantalum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DENDAT330726D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of DE330726C publication Critical patent/DE330726C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/04—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples the object to be measured not forming one of the thermoelectric materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Description

Thermoelement. Das Thermoelement, welches in der Zeichnung dargestellt ist, besteht aus einem Tantaldraht b und einem Molybdändraht a. Die beiden Drähte a und b sind mit je einem Ende miteinander verschweißt. Die beiden Drähte a und b liegen in einer Packung, bestehend aus absolut basischer und hochfeuerfester Schamotte, wodurch sie außer der Schweißstelle c überall voneinander isoliert sind. Das so entstandene Element ist nun noch in ein Schutzrohr d eingeschmolzen, das vor dem Verschmelzen von atmosphärischer Luft befreit ist. Das genannte Thermoelement hat gegenüber den bisher gebräuchlichen den Vorteil sehr billiger Anschaffungskosten und sehr hoher Meßfähigkeit, die ihren Grund darin hat, daß Tantal und Molybdän einen sehr hohen Schmelzpunkt haben. Das Thermoelement muß in einem Raume, der mit einer absolut basischen und hochfeuerfesten Masse gefüllt ist, eingeschmolzen sein, da die Metalle bei mittelhoher Temperatur oxydieren.Thermocouple. The thermocouple shown in the drawing consists of a tantalum wire b and a molybdenum wire a. The two wires a and b are welded to one another at one end each. The two wires a and b are in a pack, consisting of absolutely basic and highly refractory chamotte, which means that they are isolated from each other except for the welding point c. The element created in this way is now melted into a protective tube d, which has been freed from atmospheric air before it melts. The above-mentioned thermocouple has the advantage of very cheap acquisition costs and very high measuring capability compared with the previously used ones, which is due to the fact that tantalum and molybdenum have a very high melting point. The thermocouple must be melted in a room that is filled with an absolutely basic and highly refractory mass, since the metals oxidize at medium-high temperatures.

Claims (1)

PATENTANSPRUCH: Thermoelement zur Messung hoher Temperaturen, dadurch gekennzeichnet, daß es aus Tantat_ und Molybdän besteht. PATENT CLAIM: Thermocouple for measuring high temperatures, characterized in that it consists of Tantat_ and molybdenum.
DENDAT330726D Thermocouple Expired DE330726C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE330726T

Publications (1)

Publication Number Publication Date
DE330726C true DE330726C (en) 1920-12-21

Family

ID=6192235

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT330726D Expired DE330726C (en) Thermocouple

Country Status (1)

Country Link
DE (1) DE330726C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844637A (en) * 1952-09-05 1958-07-22 Alfred Charles Edouard Borel Gastight instrument shell for furnaces

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844637A (en) * 1952-09-05 1958-07-22 Alfred Charles Edouard Borel Gastight instrument shell for furnaces

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