USE MANUAL
MINISENTRY-2
107911_D User manual MINISENTRY-2_En.docx
MIRION TECHNOLOGIES (Canberra) S.A.S, BP249, ZI de Vauzelles, 3760
9.2 BACKGROUND MANAGEMENT
Each measure mode can provide measure either in net if background is enabled or in gross if disabled.
In order to get the most accurate background value, it is continuously updated when the portal is free,
discard and delay time process avoids the chance that a contaminated person affects the background
while they are still in the vicinity of the detector. Also, a variation detection is able to detect a
background variation and adapt the background level to make it more representative.
9.3 ALARM MANAGEMENT
The MiniSentry-2 is equipped with visual (front panel LED), red / green light tower (Optional) and
audible (annunciator) alarms. The alarm levels and modes are set in the "Measure settings" menus for
each of the operational modes.
If a contamination alarm level value is exceeded, then a specific action is taken as defined by the user-
selected mode for the alarm.
The modes of operation for the alarm are:
• alarm disabled,
• automatic reset (non-latching),
• manual reset (latching), with or without sound alarm.
The alarm disabled mode suppresses the alarm.
In the automatic reset mode, the alarm clears when the alarm condition is removed in the « Count-
Rate » mode, or after two seconds in the « Walk through » or « Enter-Wait » mode.
In the manual reset mode pressing any key is required to clear the alarm.
For each measure mode, alarm thresholds can be set as a fixed rate value or using the standard
deviation above the background rate.
An alarm condition is signaled visually by a red LED indicator and audibly by an annunciator.
9.4 POWER ON
The power is turned on by pressing the ON / OFF switch of the MiniSentry control unit.
The last measure mode used is launched at start up.
During the start-up phase, the system initializes, a sound signal is generated, the software version is
displayed at the bottom of the screen, the front panel LEDs light up according to the red, green and blue
color cycle then go off (the relays follow a cycle of activation and deactivation).
If the "Profiles" option is activated in "Profile settings" the last used profile’s password is requested, in
case of failure the profile "Operator" is activated. The startup continues with the last used profile if the
password is correct or "Operator" if the password is incorrect.
If the "Profiles" option is disabled in "Profile Settings", the startup sequence without asking for the
password.
Minisentry-2 has 3 user levels:
• Administrator, user and system manager, with an increased knowledge of metrology.
• Technician, person who uses the system and has a metrological culture.
• Operator, person who uses the system and has no particular knowledge of metrology.
All user profiles can access to any measurement modes.
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