31
Bentone
172 525 52-1 2022-01-03
5.7
Flame detector QRC
The current passing though the flame detector, when it is lit up,
must be at least 70 µA. This current can be measured using a
multimeter and needs to be performed if it is suspected that there
is a malfunction.
Check the intensity of flame with the display AZL2. For system-
specific reasons, the display of maximum flame intensity is limited
to approx. 55%.
Required detector current (with flame)
Min. 70 µA
Permissible detector current (without flame)
Max. 5,5 μA
Typical detector current (with flame)
100 μA
Max temperature
60 °C
Measuring circuit for detector current measurement
terminal X10-05
Limit values for flame monitoring with QRC ...:
-
Start prevention (extraneous light) Approx. 15 μA, display approx. 10%
Intensity of flame (parameter 954)
-
Operation
Approx. 25 μA, display approx. 16%
Intensity of flame (parameter 954)
QRC1...
4
3
5
bl
sw
br
µA DC
LMV...
Legend:
μA DC = DC-Mikroampèremeter
an internal resistance of Ri = max.
5 kΩ
bl = blue
sw = black
br = brown
Summary of Contents for STG 146i/2
Page 34: ...34 Bentone 6 2 Wiring diagram...
Page 123: ......
Page 124: ...Enertech AB P O Box 309 SE 341 26 Ljungby www bentone com...