Spectrex 20/20MI - Mini Triple IR (IR3) Flame Detector - Manual (Page 57)

Spectrex Inc. - SharpEye TM Mini IR3 Flame Detector Manual – TM 787100, Rev. D April 2011
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Appendix D: FM Report for 20/20 MI-3
Examination and Test
Four samples of the model – 20/20 MI-3 flame detector, representative of
production units, were examined and tested at FM Approvals in Norwood,
Massachusetts.
One sample was examined, tested and compared to the manufacturer’s drawings.
All documentation applicable to this program is on file at FM Approvals.
Stability Test
One Model 20/20 MI-3 flame detector was energized and tested to verify proper
operation under normal, standby conditions. Continues operation of this sample
was monitored for 30 days in clean-air (working office type): there was no
evidence of instability or false signal during that period.
Baseline Sensitivity Test
All four samples of the 20/20MI-3 – flame detector were subjected to a small-scale
sensitivity test consisting of a 1.75 in. (4.5 cm.) diameter fire of n-Heptane at a
distance of 3 ft. (1m) from the detector. The average results for all four samples
were as follows:
Model 20/20 MI–3 at 3 ft. (1m): 1.5 seconds.