Sensing elements are located at various required levels in a vacuum dewar. Resistance changes are detected external to the container and used to indicate the presence of a liquid at a particular level. This invention is utilized at present as part of an infrared aircraft detection system. This system has 28 IR detectors arranged in a vertical line and located in a glass dewar. These detectors have to be cooled to 77 K by liquid nitrogen LN2 for proper operation. The detector-dewar assembly is located in the focal plane of a Schmidt optical system. This optical unit is rotated at a 1 revolution/second rate and becomes the scanning head of the infrared aircraft detection system.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Liquid Nitrogen Level Indicator


    Beteiligte:
    S. P. Golden (Autor:in) / C. T. Jennings (Autor:in)

    Erscheinungsdatum :

    1978


    Format / Umfang :

    5 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    LIQUID LEVEL INDICATOR IN EXPANSION TANK

    VOLKOV STEPAN STEPANOVICH / PUZEVICH NIKOLAJ LEONIDOVICH / SUCHUGOV BORIS NIKOLAEVICH et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    Liquid-metal level detector and indicator

    Stillwell, L. W. | NTRS | 1965


    Level indicator

    GERSON FRED B | Europäisches Patentamt | 2021

    Freier Zugriff

    Level Indicator

    CROSSLEY BRUCE RUSSELL | Europäisches Patentamt | 2022

    Freier Zugriff

    Level Indicator

    GERSON FRED B | Europäisches Patentamt | 2020

    Freier Zugriff