GB751481A - Improvements in television apparatus - Google Patents

Improvements in television apparatus

Info

Publication number
GB751481A
GB751481A GB1844453A GB1844453A GB751481A GB 751481 A GB751481 A GB 751481A GB 1844453 A GB1844453 A GB 1844453A GB 1844453 A GB1844453 A GB 1844453A GB 751481 A GB751481 A GB 751481A
Authority
GB
United Kingdom
Prior art keywords
light
photo
cathode
gauge
type
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
GB1844453A
Inventor
Cyril Cryer Whitehead
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.)
Danks Holding Ltd
Original Assignee
Bailey Meters and Controls 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 Bailey Meters and Controls Ltd filed Critical Bailey Meters and Controls Ltd
Priority to GB1844453A priority Critical patent/GB751481A/en
Publication of GB751481A publication Critical patent/GB751481A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/39—Scanning a visible indication of the measured value and reproducing this indication at the remote place, e.g. on the screen of a cathode ray tube

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

751,481. Television. BAILEY METERS & CONTROLS, Ltd. July 2, 1954 [July 3, 1953], No. 18444/53. Drawings to Specification. Class 40 (3). [Also in Group XVIII] A remote electrical indicating system for a steam pressure gauge comprises a television system formed of flying-spot scanners operating in conjunction with a photo-emission light cell, the system being arranged to utilize light having a wavelength in the region of 4000 Š.U. in order that a useful signal may be obtained in presence of ambient incandescent lighting. The flying-spot scanner comprises a cathode-ray tube having a phosphor of the nickel-killed zinc sulphide type and the light cell is of a type having either a photo-cathode expansion in the region of 4000 Š.U. or a photo-cathode of the silver-oxygen-caesium type operated in conjunction with a filter attenuating light of a wavelength greater than 5000 Š.U. The gauge (see Group XVIII) is constructed with a mirror and light-absorbing box located at the rear and arranged to provide a clear indication of level by absorbing light traversing the portion of the gauge column occupied by water and reflecting light traversing the portion occupied by steam. The front carries a matt aluminium scale or is painted with matt-finish aluminium paint which is stated to absorb a substantial proportion of light of wavelength greater than 4000 A.U.
GB1844453A 1953-07-03 1953-07-03 Improvements in television apparatus Expired GB751481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1844453A GB751481A (en) 1953-07-03 1953-07-03 Improvements in television apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1844453A GB751481A (en) 1953-07-03 1953-07-03 Improvements in television apparatus

Publications (1)

Publication Number Publication Date
GB751481A true GB751481A (en) 1956-06-27

Family

ID=10112532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1844453A Expired GB751481A (en) 1953-07-03 1953-07-03 Improvements in television apparatus

Country Status (1)

Country Link
GB (1) GB751481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT515095B1 (en) * 2014-01-16 2015-06-15 Minebea Co Ltd Method for the optical detection of the level of a liquid, fluid dynamic bearing and measuring sensor for carrying out this method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT515095B1 (en) * 2014-01-16 2015-06-15 Minebea Co Ltd Method for the optical detection of the level of a liquid, fluid dynamic bearing and measuring sensor for carrying out this method
AT515095A4 (en) * 2014-01-16 2015-06-15 Minebea Co Ltd Method for the optical detection of the level of a liquid, fluid dynamic bearing and measuring sensor for carrying out this method

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