Vaisala INTERCAP® Humidity and
Temperature Transmitter Series HMW80
M211328EN-C _______________________________________________________________________ 1
INSTALLATION
1. Find a suitable mounting location for the transmitter. The conditions at the location
should represent well the area of interest.
NOTE
Do not install the transmitter on the ceiling. Avoid placing the transmitter near heat
sources, ventilation,
and direct sunlight.
2. Use the mounting holes to attach the mounting base securely. Use at least two
screws (not included). The arrow on the mounting base must point straight up after
installation. Proper orientation is important, so that air will flow through the vents
on the bottom and top.
3. Connect the wiring to the screw terminals on the mounting base. The supply voltage
and terminal assignments are model-specific; see Wiring on page 2.
4. After completing the wiring, connect the cover over the mounting base.
Dimensions (in mm)
76.9
123.7
9
5
5.5
24
81
127.3
77.9
60.3
59
Ø4.4 Ø4.4
32.4
20
Quick Guide ____________________________________________________________________ HMW80
© Vaisala 2016. 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.
HMW82P100
-
T
4...20 mA
(-5 ... +55ºC)
-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
2 11
Pt100
t+
HMW82P100
Includes a passive Pt100 temperature
sensor (Class F 0.1 IEC 60751) with
a 3-wire connection.
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.
Quick Guide ____________________________________________________________________ HMW80
© Vaisala 2016. All rights reserved. _______________________________________________________ 3
HMW83
-T
0...10 V
(0...100 %RH)
-VS+T +VS
Power supply
15 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 kΩ min.
-RH +RH
0...10 V
(-5...+55 ºC)
V
V
-T -V
S+T +
V
S
Pow
er s
upp
ly
15 ... 35
VD
C
or 24 VAC ±20%
R
L
= 10 kΩ 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 kΩ min.
-T -VS+T +VS
V
Power supply
15 ... 35 VDC
or 24 VAC ±20%
R
L
= 10 kΩ 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.
-
1
-
2
-
3
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