GB1092590A - Improvements in or relating to air-purge units for radiation pyrometers - Google Patents

Improvements in or relating to air-purge units for radiation pyrometers

Info

Publication number
GB1092590A
GB1092590A GB34912/66A GB3491266A GB1092590A GB 1092590 A GB1092590 A GB 1092590A GB 34912/66 A GB34912/66 A GB 34912/66A GB 3491266 A GB3491266 A GB 3491266A GB 1092590 A GB1092590 A GB 1092590A
Authority
GB
United Kingdom
Prior art keywords
air
pyrometer
tube
window
lens
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
GB34912/66A
Inventor
Thomas Land
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.)
Land Pyrometers Ltd
Original Assignee
Land Pyrometers Ltd
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 Land Pyrometers Ltd filed Critical Land Pyrometers Ltd
Priority to GB34912/66A priority Critical patent/GB1092590A/en
Priority to US579078A priority patent/US3436965A/en
Publication of GB1092590A publication Critical patent/GB1092590A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/05—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path
    • G01J5/051—Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path using a gas purge

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Radiation Pyrometers (AREA)

Abstract

1,092,590. Radiation pyrometer. LAND PYROMETERS Ltd. Aug. 4, 1966, No. 34912/66. Heading G1A. In a temperature measuring radiation pyrometer of the type in which a photo-cell is located at the rear end of a tube and a radiation transmitting window at the front end, a stream of air rises from an annular diffusing element surrounding the front end of the tube in an axial direction away from the window. In one arrangement (Fig. 1) air enters at port 11 and flows via a passage 20 surrounding the pyrometer tube 7, containing photo-cell 4 calibrating aperture 5 and window lens 3, to enter an annular chamber 13 and exits via an annular bronze diffusing plate 14 forming the front wall of chamber 13. Air issuing from the diffusing plate into the conical nozzle 15 flows in an axial direction without creating any swirls which would draw air backwards on to the lens to soil it. The positive pressure within the nozzle prevents ambient atmosphere from reaching the lens. Support for the pyrometer is provided by ball and socket 26 and/or the mounting plate 23. In a modified arrangement Fig. 2 (not shown) air does not travel the length of the pyrometer tube but enters chamber 13 directly at the window end.
GB34912/66A 1966-08-04 1966-08-04 Improvements in or relating to air-purge units for radiation pyrometers Expired GB1092590A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB34912/66A GB1092590A (en) 1966-08-04 1966-08-04 Improvements in or relating to air-purge units for radiation pyrometers
US579078A US3436965A (en) 1966-08-04 1966-09-13 Air-purge units for radiation pyrometers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34912/66A GB1092590A (en) 1966-08-04 1966-08-04 Improvements in or relating to air-purge units for radiation pyrometers

Publications (1)

Publication Number Publication Date
GB1092590A true GB1092590A (en) 1967-11-29

Family

ID=10371446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34912/66A Expired GB1092590A (en) 1966-08-04 1966-08-04 Improvements in or relating to air-purge units for radiation pyrometers

Country Status (2)

Country Link
US (1) US3436965A (en)
GB (1) GB1092590A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158576A (en) * 1984-05-12 1985-11-13 Smiths Industries Plc Radiation pyrometer
JPS62297724A (en) * 1986-06-17 1987-12-24 Mitsubishi Metal Corp Radiation temperature measuring instrument
EP0588742A1 (en) * 1992-09-18 1994-03-23 Sollac Optical pyrometer and its alignment tube supporting device on the roof of an industrial furnace

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037473A (en) * 1971-09-16 1977-07-26 International Harvester Company Radiation pyrometers with purging fluid
BE830895A (en) * 1975-07-01 1976-01-02 DEVICE FOR MONITORING THE INTERIOR OF A SPEAKER
US4063458A (en) * 1976-07-27 1977-12-20 Klockner Humboldt Deutz Aktiengesellschaft Method and apparatus for operating instruments subject to radiation
US4259866A (en) * 1979-03-22 1981-04-07 Ppg Industries, Inc. Pyrometer assembly having a heated viewing tube
US4303435A (en) * 1979-03-22 1981-12-01 Ppg Industries, Inc. Glass ribbon float tank with a pyrometer assembly having a heated viewing tube and method of use
DE3044104A1 (en) * 1980-11-24 1982-06-03 Deutag-Mischwerke & Fertighaus GmbH, 5000 Köln RADIATION SENSORS FOR MEASURING TEMPERATURES OF HEATED DEGREE MATERIALS, ESPECIALLY BITUMINOUS MIXED MATERIAL
DE3104258A1 (en) * 1981-02-07 1982-10-21 Ruhrchemie Ag, 4200 Oberhausen DEVICE FOR MEASURING TEMPERATURES IN PRESSURE REACTORS
US4391584A (en) * 1981-09-11 1983-07-05 Burlington Industries, Inc. Non-contact infrared fabric temperature monitoring
US4648711A (en) * 1984-06-08 1987-03-10 The Dow Chemical Company Sight tube assembly and sensing instrument for controlling a gas turbine
US4786188A (en) * 1986-02-27 1988-11-22 Rosemont Inc. Purge air system for a combustion instrument
US4836689A (en) * 1986-02-27 1989-06-06 Rosemount Inc. Asymmetric purge air system for cleaning a lens
GB9411160D0 (en) * 1994-06-03 1994-07-27 Land Infrared Ltd Improvements relating to radiation thermometers
US6695886B1 (en) * 2002-08-22 2004-02-24 Axcelis Technologies, Inc. Optical path improvement, focus length change compensation, and stray light reduction for temperature measurement system of RTP tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2074641A (en) * 1934-05-23 1937-03-23 Ici Ltd Measurement of high temperatures
US2369624A (en) * 1942-02-13 1945-02-13 Brown Instr Co Pyrometry
US2497783A (en) * 1945-07-24 1950-02-14 Hagan Corp Radiation pyrometer
GB620766A (en) * 1946-06-18 1949-03-30 Jessop William & Sons Ltd Improvements in or relating to radiation-measuring devices
US2909908A (en) * 1956-11-06 1959-10-27 Little Inc A Miniature refrigeration device
DE1473305A1 (en) * 1964-06-05 1969-04-10 Polysius Gmbh Device for temperature measurement in a rotary kiln

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158576A (en) * 1984-05-12 1985-11-13 Smiths Industries Plc Radiation pyrometer
US4650318A (en) * 1984-05-12 1987-03-17 Smiths Industries Public Limited Company Radiation pyrometer with gas purge
JPS62297724A (en) * 1986-06-17 1987-12-24 Mitsubishi Metal Corp Radiation temperature measuring instrument
JPH0713580B2 (en) * 1986-06-17 1995-02-15 三菱マテリアル株式会社 Radiation temperature measuring device
EP0588742A1 (en) * 1992-09-18 1994-03-23 Sollac Optical pyrometer and its alignment tube supporting device on the roof of an industrial furnace
FR2695989A1 (en) * 1992-09-18 1994-03-25 Lorraine Laminage Support device for an optical pyrometer and its sighting tube on the roof of an industrial oven.

Also Published As

Publication number Publication date
US3436965A (en) 1969-04-08

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