Spectrex 40/40L-LB UV/IR Flame Detector Series - Manual (Page 76)

SharpEye TM UV/IR Flame Detector User Guide
64 Air Shield - P/N 777650
D.6 Air Shield - P/N 777650
The Air Shield enables you to install the detector in dirty areas and using
compressed air, keep the window clean. This prevents the accumulation of
dirt on the window and enables the detector to continue to operate under
harsh conditions.
When the air shield is fitted on the detector, it reduces the cone of vision of
the detector by ±5° in each direction.
Figure 21: Air Shield