USE MANUAL
MINISENTRY-2
107911_D User manual MINISENTRY-2_En.docx
MIRION TECHNOLOGIES (Canberra) S.A.S, BP249, ZI de Vauzelles, 3760
9.5 WALK-THROUGH MODE
The Walk-Through mode provides for the highest throughput of traffic by allowing pedestrians to walk
non-stop through the portal. Count times are adjustable from 1 to 5 seconds.
While in operation the MiniSentry is continuously counting for 250 ms time intervals and storing the
results in a delay buffer. When the person being measured breaks the photo-sensor beam, the
MiniSentry halts any background count updates. In the walk-through mode the counts in the buffer that
occurred in one half of the specified count time before the photo-sensor beam was broken are added to
the counts that occur for one half of the specified count time after the photo-sensor beam was broken.
This results in a measurement interval that is centered on the moment that the beam was first broken,
providing the best measurement as the person walks through the portal. The front of the person is thus
counted as they approach the monitor and their back is counted as they leave the monitor. Thus, in
addition to the time that the individual is in the portal they are also monitored during that enter end exit
time during which any contamination present would significantly affect the count rate in the detectors.
If the « Walk through » mode is not selected after a power on then:
1. Press the key to access the main menu.
Note: The « Measure Mode » line is selected by default. If necessary, press the or keys to
select the line.
2. Press the key or to display the « Measure Mode » and press the key to select
the line « Walk through ».
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