Spectrex 20/20MU - Mini Flame Detector - Manual (Page 20)

Spectrex Inc. - SharpEye TM ML & MU Flame Detector Manual – TM 767100, Rev. A, April 2005
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Table 3. 20/20MU - Immunity to False Alarm Faults
Radiation Source Immunity
Distance ft. (m)
Sunlight IAD
Indirect or reflected sunlight
IAD
Vehicle headlights (low beam) conforming to MS53023-1 IAD
Incandescent frosted glass light, 100W IAD
Incandescent clear glass light, rough service, 100W IAD
Fluorescent light with white enamel reflector, standard office
or shop, 40W (or two 20W) IAD
Bright colored clothing, including red and safety orange IAD
Red dome light conforming to M251073-1 IAD
Blue-green dome light conforming to M251073-1 IAD
Flashlight (Mx 991/U) IAD
Radiation heater, 1500W IAD
Radiation heater, 1000W with fan IAD
Lit cigar or cigarette 5ft. (1.5m)
Match, wood, stick including flare up 13.3ft. (4.0m)
Please Note: UV flame detectors are sensitive to false alarm from UV radiation
sources such transforms, motors, welding, spikes, etc. (That may be present in the
protected area or far away.)