Model 44-9 Alpha, Beta and Gamma Detector
Ludlum Measurements, Inc. Page 5 December 2016
Caution!
The mica window of this tube is extremely thin and
fragile. There is also a thin layer of material to prevent
UV interference. This material may come off if touched,
causing the detector to malfunction. DO NOT TOUCH!
6. Carefully install the tube with the window facing down in
the housing.
7. Ensure the tube is flush against the screen and tighten the
set screws.
8. Replace the back plate and retaining screws.
9. Recalibrate the instrument and detector before use.
Cleaning Instructions and Precautions
The detector may be cleaned externally with a damp cloth,
using only water as the wetting agent. Do not immerse the
instrument in any liquid. Observe the following precautions
when cleaning:
1. Turn the instrument electronics OFF.
2. Allow the instrument to sit for one minute.
3. Disconnect the detector cable before cleaning the
detector.
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