6
CALIBRATION
The TroxAlert responds to alpha, beta, gamma, and x-ray
radiation (gamma and x-ray at a minimum energy level of
40 keV).
Two points on each of the three meter ranges are verified at the
factory by placing the TroxAlert in a field of known radiation.
A cesium-137 (Cs-137) gamma source that is traceable to the
U.S. National Institute of Standards and Technology (NIST) is
used for this calibration. The accuracy of any single reading
based on this calibration is ± 20%.
Note that environmental conditions and user technique affect the
accuracy of the TroxAlert reading.
The TroxAlert should be re-calibrated at least once every year
or as required by the user’s license to insure readings within the
stated accuracy range.
For additional information regarding re-calibration procedures,
contact the Troxler Radiation Safety Department at
(919) 549-8661.
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