Owner manual

Chapter 3 ________________________________________________________________ Installation
VAISALA ________________________________________________________________________ 27
Wiring GMW93R/RA
Recommended wiring for long cables:
1402-032
Figure 13 Wiring GMW93R/RA
-Vs terminal is internally connected to GND terminal, so you can also
use the -Vs terminal as common ground. Maximum cable resistance is
2.5 Ω (24V supply, 0 ... 10 V output):
1402-031
Figure 14 Alternate Wiring for GMW93R/RA
Wiring GMW93
GMW93 is wired in the same way as GMW93R/RA, except for the
humidity output that is not present:
1402-030
Figure 15 Wiring GMW93
T+
GND -VsCO
2
+ +Vs
Power supply
18 ... 35 VDC
or 24 VAC ±20%
V
R
L
= 10 kΩ min.
V
RH+
V
T+
GND -Vs
CO
2
+ +Vs
Power supply
18 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 kΩ min.
V
RH+
V
V
T+
GND -VsCO
2
+ +Vs
Power supply
18 ... 35 VDC
or 24 VAC ±20%
V
R
L
= 10 kΩ min.
V