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JPS6459020A - Temperature measuring apparatus - Google Patents

Temperature measuring apparatus

Info

Publication number
JPS6459020A
JPS6459020A JP11677588A JP11677588A JPS6459020A JP S6459020 A JPS6459020 A JP S6459020A JP 11677588 A JP11677588 A JP 11677588A JP 11677588 A JP11677588 A JP 11677588A JP S6459020 A JPS6459020 A JP S6459020A
Authority
JP
Japan
Prior art keywords
medium
temperature measuring
glass fiber
photodetector
light
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.)
Pending
Application number
JP11677588A
Other languages
Japanese (ja)
Inventor
Kaufuman Mainorufu
Shiyurutaisu Rootaru
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.)
ABB Asea Brown Boveri Ltd
ABB AB
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Publication of JPS6459020A publication Critical patent/JPS6459020A/en
Pending 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
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/18—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of materials which change translucency

Landscapes

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

Abstract

PURPOSE: To obtain a temperature measuring instrument having a simple compact structure by using an internal medium having a large refractive index as compared with that of an external medium surrounding a Fabry-Perot interference element. CONSTITUTION: A temperature measuring instrument is constituted of a light source 1, a first glass fiber 3a, a Fabry-Perot interference element 4, a second glass fiber 3b, and a photodetector 2. The element 4 has a plate-like shape and is surrounded by an external medium 11 and the inside of the element 4 is filled up with an internal medium 6. The boundary between the media 6 and 11 functions as a mirror and the medium 6 has a refractive index higher than that of the medium 11. The light from the light source 1 is condensed into the glass fiber 3a and guided to a temperature measuring place. The light emitted from the front face 5a of the fiber 3a is completely or partially transmitted through the element 4 and converged into the glass fiber 3b. At the end of the fiber 3b, the light is absorbed by the photodetector 2. Evaluation electronics can be connected to the outlet side of the photodetector 2 if necessary.
JP11677588A 1987-05-14 1988-05-13 Temperature measuring apparatus Pending JPS6459020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH185487 1987-05-14

Publications (1)

Publication Number Publication Date
JPS6459020A true JPS6459020A (en) 1989-03-06

Family

ID=4220161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11677588A Pending JPS6459020A (en) 1987-05-14 1988-05-13 Temperature measuring apparatus

Country Status (3)

Country Link
JP (1) JPS6459020A (en)
DE (1) DE3815260A1 (en)
GB (1) GB2204948A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04371244A (en) * 1991-06-21 1992-12-24 Nishihara Environ Sanit Res Corp Controller for centrifugal separator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237872B (en) * 1989-11-08 1993-06-02 Stc Plc Temperature sensor
DE4223625A1 (en) * 1992-07-17 1994-01-20 Inst Physikalische Hochtech Ev Fiber optic sensor according to the Fabry-Perot principle
GB0408073D0 (en) 2004-04-08 2004-05-12 Council Cent Lab Res Councils Optical sensor
CN110954505A (en) * 2019-11-21 2020-04-03 河海大学 A device and method for monitoring the refractive index of liquid

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437761A (en) * 1981-03-27 1984-03-20 Sperry Corporation Refractive index temperature sensor
US4678904A (en) * 1984-07-06 1987-07-07 Technology Dynamics, Inc. Optical measuring device using a spectral modulation sensor having an optically resonant structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04371244A (en) * 1991-06-21 1992-12-24 Nishihara Environ Sanit Res Corp Controller for centrifugal separator

Also Published As

Publication number Publication date
DE3815260A1 (en) 1988-11-24
GB2204948A (en) 1988-11-23
GB8811119D0 (en) 1988-06-15

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