Manual

Spectrex Inc. - SharpEye

UV/IR Flame Detector Manual –

TM20/20LB Rev E, August 2004

3.3 False Alarms

The detector does not

provide an alarm or a warning signal as a reaction to the

radiation sources specified at Table 2 below.

Notes:

IAD = Immune at any distance.

All sources are chopped from 0 to 20 Hz.

Table 2. 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

Arc welding [4mm (5/32in) rod; 240A] 9.8ft (3m)

Bright colored clothing, including red and safety orange IAD

Electronic flash (180 watt seconds minimum output) 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

Grinding metal 3.3ft (1m)

Lit cigar or cigarette IAD

Match, wood, stick including flare up 3.3ft (1m)