Mirion Technologies AVIOR-2 - 3 Alert on Excessive Noise

USER MANUAL
AVIOR-2/AVIOR-2 I/O & MIP-2/MIP-2 I/O
106491_C User manual AVIOR-2 MIP-2_En.docx
MIRION TECHNOLOGIES (Canberra)S.A.S, BP249, ZI de Vauzelles, 37602
Loches Cedex
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The measurement of the background noise is then launched.
If the acquisition is manual, a message appears asking the user to recalculate the background noise
The measurement of the background noise is then launched.
11.7.3 Alert on excessive noise
At the end of an acquisition of background noise a warning about excessive noise can be triggered:

With the calculation of the measurement time (case of counting scale mode § 10.4 and hand/foot
§ 10.6): If the measurement time is greater than or equal to the maximum time of integration, there
is the « Excessive noise » message notification.

With the threshold of decision (case of the direct measurement modes § 10.3 and screening § 10.5):
If the SD decision threshold is greater than or equal to the set alarm threshold in the probe, there is
the « Excessive noise » message notification.
The SD decision threshold is calculated according to the formula:
ࡿࡰ= ࡷ
ࢇ
ඨ
ࡾ
࢈࢑ࢍ
ቆ
૚
ࢀ
࢈࢑ࢍ
+
૚
ࢀ
࢓ࢋࢇ࢙࢛࢘ࢋ
ቇ
With:
ܭ
௔
is the coefficient of false alarm
ܴ
௕௞௚
is the average value of the BKG
ܶ
௕௞௚
is the time of acquisition of the BKG
ܶ
௠௘௔௦௨௥௘
is the measurement time