Siemens LME7 Series Basic Documentation page 35

Measuring circuit for detector
current measurement
Building Technologies Division
Infrastructure & Cities Sector
Ionization probe
M
LME7...
X10-05/2
C
X10-05/1
Figure 4: Measuring circuit for ionization probe
Legend
C Electrolytic condenser 100...470 µF; DC 10...25 V
ION Ionization probe
Microammeter Ri max. 5,000 
M
Warning!
Simultaneous operation of QRA... and ionization probe is not permitted!
If not observed, there is a risk of impairment of safety functions.
Basic Documentation LME7...
4 Technical data
ION
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CC1P7105en
29.11.2011