Quick Guide ___________________________________________________________________ HMW80
© Vaisala 2011. All rights reserved. ______________________________________________________ 2
WIRING
HMW82
-T
4...20 mA
(-5 ... +55 ºC)
-RH
4...20 mA
(0 ... 100% RH)
+T
+RH
Power supply
10 ... 28 VDC
R
L
= 0 ... 500
Ω
Power supply
10 ... 28 VDC
R
L
= 0 ... 500
Ω
mA
mA
You must connect the RH channel
of the HMW82
, even if you only
want to measure temperature.
Connecting the T channel is optional.
TMW82
-T
4...20 mA
(-5 ... +55 ºC)
+T
Power supply
10 ... 28 VDC
R
L
= 0 ... 500
Ω
mA
Leave the two terminals on the left
unconnected.
HMW83
-T
0...10 V
(0...100 %RH)
-VS
+T
+VS
Power supply
15 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 k
Ω
min.
-RH +RH
0...10 V
(-5...+55 ºC)
V
V
-T
-VS
+T
+VS
Power supply
15 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 k
Ω
min.
-RH +RH
V
V
0...10 V
0...10 V
Recommended wiring for long cables.
3-wire connection with -VS as common
ground. Not recommended if cable resistance is
more than 2.5
Ω
.
TMW83
-T
0...10 V
(-5 ... +55 ºC)
-VS
+T
+VS
V
Power supply
15 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 k
Ω
min.
-T
-VS
+T
+VS
V
Power supply
15 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 k
Ω
min.
0...10 V
Recommended wiring for long cables.
3-wire connection with -VS as common
ground. Not recommended if cable resistance is
more than 2.5
Ω
.
