DURAG D-LX 721 User Manual

8 | Flame monitor settings
D-LX 201/721
81
Start
Basic setting (rotary/
amplification switch)
Amplification characteristic = V8'
both switching thresholds = 0
Burner OFF
(max. background radiation)
(background radiation adaptation)
"Reduce" amplification
characteristic (see info on
setting the amplification
characteristic)
No
(background radiation adaptation)
Yes
Analogue output
< 5/8 mA
"Flame" LED OFF
?
Has the
amplification
characteristic
already been reduced
?
"Increase" the amplification
characteristic by one step
Yes
No
Yes
No
"Start" burner
(Note: ”Burner failure”)
Current display
> 5/8 mA
"Flame" LED ON
?
Check the viewing position/
alignment of the flame
monitor and re-adjust if
necessary.
End
The rotary switch has no rotation end stop, and
so can be rotated in any direction indefinitely
Turn the intensity switch
clockwise by one switching
position
Analogue output
< 5/8 mA
"Flame" LED OFF
?
Yes
No
Fig.8.7: Flow diagram for settings using the analogue output/LED
1.
To work out the switching threshold, always use the statuses of flame OFF with
maximum background radiation (e.g. the burner being monitored is switched off; all
other burners are switched on) and flame ON with minimum flame signal (e.g. the
burner being monitored is switched on; all other burners are switched off)

DURAG D-LX 721 Specifications

General

Brand	DURAG
Model	D-LX 721
Category	Measuring Instruments
Language	English