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  • CT Ion Chamber 30 cm

    CT Ion Chamber 30 cm

    30 cm Ionization Chamber for Free-in-air Measurements

    The CT Chamber 30 cm is a cylindrical pencil-shaped air ionization chamber specially developed for free in air measurements on wide beam CT scanners. The CT chamber 30 cm is intended for measuring and monitoring the exposure output level of CT scanners when the beam width is 4 cm or wider.

    The chamber can be connected via Chamber Adapter to the Piranha or Cobia to measure CTDI.

    The CT Chamber 30 cm fulfils relevant parts of IEC 61223-2-6, and IEC 60601-2-44 

    Art. No 9705135-00

    Ranges with Piranha & Cobia Flex
    (Chamber Adapter required)

    Air kerma rate

    0.8 mGycm/s to 8 Gycm/s


    ±6 % or ±0.08 mGycm/s

    Connector type

    LEMO triaxial


    2 m, low noise triaxial

    Active volume

    14.7 cm3

    Active length

    300 mm

    Inner diameter

    8.0 mm

    Typical leakage

    ±4 fA

    Radiation quality

    80 - 150 kV


    How-to: Free-in-air Measurement with 30 cm CT Ion Chamber and Black Piranha 

    This instructional video will show you how to carry out a free-in-air measurement using 30 cm CT Ion Chamber, Piranha and Ocean Quick Check.


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