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F-Guard IR3 HD User Manual
False Alarm Immunity
The following table shows test results of false alarm immunity for detectors configured to
“Extreme” sensitivity. For each radiation source, a distance is listed. This is the minimum tested
distance, from which the detectors did not alarm when exposed to the radiation source (either
modulated or non-modulated).
False Stimuli only at Extreme Sensitivity
False Alarm Source
Maximum Distance in ft (m)
Sunlight, Direct, Reflected
No response at any distance
Sunlight, Direct, reflected with water
drops on sensors
No response at any distance
Incandescent frosted glass light, 300W
2 (0.5)
Fluorescent, 70W (3x23.3W)
2 (0.5)
Electric arc
2 (0.5)
Arc welding
12 (3.5)
Radiation heater, 1850W
2 (0.5)
Radiation heater, 1850W with water
drops on sensors
2 (0.5)
Quartz lamp (1000W) shielded
2 (0.5)
Quartz lamp (500W) non-shielded
2 (0.5)
Quartz lamp (500W) non-shielded with
water drops on sensors
2 (0.5)
Mercury vapor lamp 160Wx3
2 (0.5)
Car Exhausts
2 (0.5)
Projector led
2 (0.5)
Solenoid bell
2 (0.5)
Soldering iron
2 (0.5)
Electric Drill
2 (0.5)