Spectrex Xenon 700 SIL Open-Path Gas Detection System - Manual (Page 23)

TM 799200 Rev (C), January 2014
Description 11
2.6.1 Flash Source Unit
The Flash Source unit emits IR radiation pulses at the rate of two pulses per
second. The pulse width (5-10msec) is very powerful. The front of the
source SafEye has a coated lens that collimates the IR beam for maximum
intensity. The coated lens blocks all the UV and visible lights from passing
through the lens and prevents the flash pulse being visible to the eye. The
lens is heated to improve performance in icing, condensation and snow
conditions.
There are two source types:
 Short and Medium Range: For use in models 701S, 702S, 721S, and
722S
 Long Range: For use in models 703S and 723S
1 Main Housing 6 Telescope Site
2 Junction Box 7 N/A
3 Back Cover 8 Earth Terminal
4 Cable Inlet 9 Front Window/Lens Section
5 Holding Plate
Figure 2: Flash Source Unit