GB674484A - Improvements in or relating to resistance-thermometers - Google Patents

Improvements in or relating to resistance-thermometers

Info

Publication number
GB674484A
GB674484A GB14978/50A GB1497850A GB674484A GB 674484 A GB674484 A GB 674484A GB 14978/50 A GB14978/50 A GB 14978/50A GB 1497850 A GB1497850 A GB 1497850A GB 674484 A GB674484 A GB 674484A
Authority
GB
United Kingdom
Prior art keywords
covering layer
glass
tube
aluminium oxide
carrier tube
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
GB14978/50A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Priority to GB14978/50A priority Critical patent/GB674484A/en
Publication of GB674484A publication Critical patent/GB674484A/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
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thermistors And Varistors (AREA)

Abstract

674,484. Temperature-variable resistors. DEUTSCHE GOLDUND SILBERSCHEIDEANSTALT VORM. ROESSLER. June 15, 1950 [July 30, 1949], No. 14978/50. Drawings to Specification. Class 37. A resistance thermometer comprises a platinum wire, constituting the measuring element, supported on the outer surface of a carrier tube, at least the outer surface of which tube consists of high temperature-resistant metal oxides, preferably sintered aluminium oxide. An outer sheath consisting of an insulating covering layer of a high temperatureresistant ceramic material is fused or sintered directly on to the platinum winding and the carrier tube. The carrier tube may be profiled or grooved. The interior of the tube may receive the current lead and may communicate through holes with the surface. The covering layer may consist of glass with a high softening- point, for example glass poor in alkali or rich in alkaline earth or alumina. The glass may be applied to the measuring winding in the form of fibres, twisted threads, glass tow, spun glass, or powder, and then heated to form a covering layer free from air gaps, or it may be applied by spraying. Alternatively the covering layer may consist of a ceramic material sintered or fritted on, such as pure aluminium oxide or aluminium oxide with a small addition of glass powder. In a modification, a metal tube forms the core of the carrier tube and is provided with an insulating covering layer on which the platinum winding is wound, a second covering layer preferably of the same kind then being applied. The carrier body may be formed from oxidation resistant metal compositions comparable in their thermal expansion to the covering layers, for example alloys of iron, nickel, and manganese, or of iron and chromium, in association with glassy covering layers.
GB14978/50A 1950-06-15 1950-06-15 Improvements in or relating to resistance-thermometers Expired GB674484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB14978/50A GB674484A (en) 1950-06-15 1950-06-15 Improvements in or relating to resistance-thermometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB14978/50A GB674484A (en) 1950-06-15 1950-06-15 Improvements in or relating to resistance-thermometers

Publications (1)

Publication Number Publication Date
GB674484A true GB674484A (en) 1952-06-25

Family

ID=6591048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14978/50A Expired GB674484A (en) 1950-06-15 1950-06-15 Improvements in or relating to resistance-thermometers

Country Status (1)

Country Link
GB (1) GB674484A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866060A (en) * 1955-02-04 1958-12-23 Degussa Electrical resistance thermometer of low heat capacity
US3237139A (en) * 1962-09-05 1966-02-22 Rosemount Eng Co Ltd Hollow temperature sensor
US3781749A (en) * 1971-11-18 1973-12-25 Johnson Matthey Co Ltd Resistance thermometer element
EP0080535B1 (en) * 1981-11-27 1985-08-28 Krohne AG Measuring head for an electro-magnetic flow meter
US4791398A (en) * 1986-02-13 1988-12-13 Rosemount Inc. Thin film platinum resistance thermometer with high temperature diffusion barrier
US8698006B2 (en) 2009-06-04 2014-04-15 Morgan Advanced Ceramics, Inc. Co-fired metal and ceramic composite feedthrough assemblies for use at least in implantable medical devices and methods for making the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2866060A (en) * 1955-02-04 1958-12-23 Degussa Electrical resistance thermometer of low heat capacity
US3237139A (en) * 1962-09-05 1966-02-22 Rosemount Eng Co Ltd Hollow temperature sensor
US3781749A (en) * 1971-11-18 1973-12-25 Johnson Matthey Co Ltd Resistance thermometer element
EP0080535B1 (en) * 1981-11-27 1985-08-28 Krohne AG Measuring head for an electro-magnetic flow meter
US4791398A (en) * 1986-02-13 1988-12-13 Rosemount Inc. Thin film platinum resistance thermometer with high temperature diffusion barrier
US8698006B2 (en) 2009-06-04 2014-04-15 Morgan Advanced Ceramics, Inc. Co-fired metal and ceramic composite feedthrough assemblies for use at least in implantable medical devices and methods for making the same

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