Uv-Detector - Bentone BG 550 Installation And Maintenance Instruction

5.7 UV-Detector

DC current detector signals with flame detector
QRQ...
Measurement at the flame detector QRA...
Ancillary unit AGQ3...A27
In connection with burner controls LMExx.xxxx2, use of UV ancillary unit
AGQ3...A27 is mandatory. Correct functioning of aged UV cells can be
checked as UV test with a higher supply voltage across the UV cell after
controlled shutdown until terminal 3 ON.
Connection diagram
Min. required
200 μA
Measuring circuit for measuring the
UV flame current
Measurement made at the flame
detector QRA...
Max. possible
500 μA
Bentone
35