Honeywell U2 User Manual page 16

U2 COMBINATION VIEWING HEAD AND SIGNAL PROCESSORS
UV RADIATION
ZONE
UV VIEWING
HEAD SIGHTED
ON UV ZONE
BURNER NOZZLE
CENTERLINE
M33286
Fig. 7. UV viewing head location.
NO. 1 FLAME NO. 2 FLAME
ENVELOPE ENVELOPE
VIEWING HEAD
VIEWING HEAD
BURNER NOZZLE NO. 1
BURNER NOZZLE NO. 2
HIGH FREQUENCY LOW FREQUENCY HIGH FREQUENCY
ZONE IR ZONE
IR ZONE
(LESS THAN 36Hz)
M33287
Fig. 8. Sighting opposed fired burners.
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