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Building Technologies
Basic Documentation LMV27...
CC1P7541en
4 Technical Data
17.12.2018
Threshold values when flame is supervised by an ionization probe:
- Start prevention (extraneous light)
Intensity of flame (parameter 954)
≥
18%
- Operation
Intensity of flame (parameter 954) >24%
0
10
20
30
40
50
60
70
80
90
100
0
2
4
6
8
10
12
14
16
Fl
am
e int
e
nsi
ty i
n
%
Ionization current in µA
Ionization input
B
ild
44
2e
n/
09
16
Figure 5: Ionization input at AC 230 V
Ionization probe
LMV...
M
C
ION
X10-05/2
X10-05/1
Legend
C Electrolytic capacitor 100...470 µF; DC 10...25 V
ION Ionization probe
M
Microammeter, Ri max. 5,000
Figure 6: Measuring circuit for ionization probe
Measuring circuit for
detector current
measurement