Metor 6M PAGE 47
Installation and Operating Manual
92102916 REV 5 9. METAL DETECTION PARAMETERS
Random Alarm
The random alarm operation is based on groups of 100 non-alarming people
passing through the detector. The number of random alarms is a set percentage of
every group of 100 non-alarming passes. Random alarms are generated with a 1%
accuracy.
E.g. Out of the 120 passes 20 people cause alarms by having metal objects with
them. 100 people pass through without activating the alarm. The random alarms
occur while the 100 non-alarming people go through. If the random alarm rate is
set to 15 %, 15 non-alarming people will cause a random alarm.
The count for 100 non-alarming passes is cleared every time when the counters are
cleared, MetorNet counter clear command is received or the random alarm rate is
adjusted.
Random alarm is indicated by:
• Flashing red light on the display unit
• Showing the alarm on the display according to the 1.7.5 RND DISPLAY setting
• Sounding an audible alarm, tone and volume depending on parameter settings
on 1.7.3 RND TONE and 1.7.4 RND VOLUME
• Lighting up the whole zone display
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