Vaisala HMDW80 - Manual (Page 28)

User's Guide _______________________________________________________________________
26 ___________________________________________________________________ M211510EN-C
Wiring
WARNING Connect only de-energized wires.
NOTE Transmitters with a configurable humidity output parameter use the
marking HUM on the screw terminal labels. The default output
parameter is relative humidity (RH) with output scaled to 0 ... 100 %RH,
but the parameter can be changed using DIP switches. Changing the
parameter also changes the output scaling. See section DIP Switches on
page 30.
HMD82(D), HMW88(D), and HMS82
Two 4 ... 20 mA
outputs, temperature
output scaling
-40 ... +60 °C
(-40 ... +140 °F).
Alternate wiring with
one power supply.
TMD82
4 ... 20 mA output,
scaling -40 ... +60 °C
(-40 ... +140 °F).
Leave terminals 3 and 4
unconnected.
HUM-
T+
T-
HUM+
2
3
4
1
10
...
28 VDC
mA
mA
+
-
+
-
10
...
28 VDC
RL = 0
...
600 Ω
mA
mA
+
-
-
RL = 0
...
600 Ω
10
...
28 VDC
HUM-
T+
T-
HUM+
2
3
4
1
mA
+
-
RL = 0
...
600 Ω
T-
T+
2
3
4
1
10
...
28 VDC