– The pyro sensor element is separated into two ‘flakes’, covering laterally
neighbouring areas of the detection zone
– output of the 2 flakes is subtracted from
one another
– Identical signals received within the same
time period in both sensor elements
will be compensated, no alarm is generated
21
1
2
out
out
Tackling Nuisance Alarms
Differential Sensors
No alarm can trigger an alarm
To Next Page
Loading...
