Vaisala DRYCAP DMT143 Guide de l'utilisateur Page 24

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USER'S GUIDE ____________________________________________________________________
22 ___________________________________________________________________ M211435EN-E
Wiring
CAUTION
The power supply lines are internally connected. You can use either one
of them, but do not connect more than one sup
ply voltage in permanent
installations. Temporary simultaneous use with the USB service cable or
DM70 hand
-held dewpoint meter (which also provide power) is OK.
Table 5 Connector Pinouts
Pin
Analog connector
Digital connector
Wire color
1
VDC supply+
VDC supply+
Brown
2
Ch-
RS-485 D0-
White
3
GND
GND
Blue
4
Ch+
RS-485 D1+
Black
1202-129
Figure 8 DMT143 Digital and Analog Connectors
1202-127
Figure 9 Wiring the Digital Connector
1202-128
Figure 10 Wiring the Analog Connector
Digital
Analog
2
4
1 3
12 ... 28 VDC
RS-485 +
RS-485 -
GND
1
2
3
4
1
3
4
2
mA
1
3
4
2
V
18 ... 28 VDC
12 ... 28 VDC
2
4
1 3
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