Spectrex 20/20MPI - Commercial IR3 Flame Detector - Manual (Page 22)

SharpEye TM IR3 Flame Detector User Guide
10 False Alarms Prevention
3.3 False Alarms Prevention
The detector does not provide an alarm or a warning signal as a reaction to
the radiation sources specified in Table 3.
Table 3: Immunity to False Alarm Sources
Radiation Source Immunity Distance
ft.(m)
Sunlight IAD
Indirect or reflected sunlight IAD
Incandescent frosted glass light, 100 W IAD
Incandescent clear glass light, rough service, 100 W IAD
Fluorescent light with white enamel reflector,
standard office or shop, 40 W (or two 20 W)
IAD
Electric arc [12mm (15/32 in) gap at 4000 V
alternating current, 60 Hz] IAD
Arc welding [4 mm (5/32 in) rod; 240 A] See Table 4
Ambient light extremes (darkness to bright light
with snow, water, rain, desert glare and fog) IAD
Bright colored clothing, including red and safety
orange. IAD
Electronic flash (180 watt-seconds minimum
output)
IAD
Movie light, 625 W quartz DWY lamp (Sylvania
S.G.-55 or equivalent) 6.5 (2)
Flashlight (MX 991/U) IAD
Radiation heater, 1500 W IAD
Radiation heater, 1000 W with fan IAD
Quartz lamp (1000 W) 10 (3)
Mercury vapor lamp IAD
Grinding metal IAD
Lit cigar 1 (0.3)
Lit cigarette 1 (0.3)
Match, wood, stick including flare up 10 (3)
Grinding metal IAD
Notes:
 IAD = Immune at Any Distance.
 All sources are chopped from 0 to 20Hz.