User Manual

6/6
Siemens Building Technologies Duct sensor QFM66/C CM1N1863E
HVAC Products 05.05.2003
Connection terminals
MB1B2 B3
G
1853G01
(r.H.) (at 50) (at 35)
M
B1B3
1863G01
GB2
Front view:
Built-in plug
G System potential AC 24 V (SELV)
M Sytem neutral, measuring neutral
B1 Output for DC 0...10 V measuring signal (for 0...100 % r. h.)
B2 Output for DC 0...10 V measuring signal (for 0...50 °C)
B3 Output for DC 0...10 V measuring signal (for −35...+35 °C)
Dimensions (in mm)
86292
19,5
ø 22
ø 12
32
6
max. 22 8
56
249
43138
ø 27
1863M 01
42
mi n. 12
1863M02
mi n. 22
42
50
68
3,2
3,2
Drilling scheme Drilling scheme
with installation flange without installation flange
ã 2000 Siemens Building Technologies AG Subject to change