Vaisala HMW60, HMW70 Technical data
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HMW60/70 Humidity and Temperature
Transmitters for wall mounting in HVAC applications
Vaisala HUMICAP® Humidity and Temperature Transmitters HMW60 and HMW70 are
designed for use in air conditioning applications where accurate and stable control
of relative humidity and temperature are required.
Features/Benefi ts
Accuracy up to ±2 %RH
▪
True two-wire transmitters
▪
with 4 ... 20 mA loop powered
output (HMW60)
Selectable signal output of
▪
0 ... 1 V, 0 ... 5 V or 0 ... 10 V
(HMW70)
Vaisala HUMICAP® Sensor
▪
for excellent accuracy and
long-term stability, negligible
hysteresis and resistance to
dust and most chemicals.
Temperature compensated
▪
Also available as temperature-
▪
only transmitters
HMW 60T/70T
NIST traceable
▪
(certifi cate included)
The wall mounted Vaisala HUMICAP®
Humidity and Temperature
Transmitters HMW60 and HMW70
are designed for monitoring relative
humidity and temperature in building
energy management systems.
The combination of high accuracy,
stability and reliable operation, make
these products the ideal choice for
demanding applications.
Measures both humidity
and temperature
The HMW60 and HMW70 transmitters
are available in three models:
U for humidity measurement-only,
Y for humidity and temperature
measurement, and T for temperature
only.
Fast, on-site calibration
The accuracy of the transmitters
is simple to check using either
the Vaisala HUMICAP
Humidity and Temperature Meter
HM70 or the Vaisala HUMICAP
Humidity Indicator HMI41. The
calibration can be done in seconds
with a single potentiometer without
disturbing the operation, resulting
in great savings both in maintenance
time and costs.
®
Hand-Held
®
Technical data
C
60 series: 2-wire, 4 to 20 mA output
Wall mount RH only HMW60U
RH & T HMW60Y
T only HMW60T
70 series: 3-wire, variable voltage output
Wall mount RH only HMW70U
RH & T HMW70Y
T only HMW70T
Relative humidity
Measurement range 0 ... 95 %RH*
Accuracy at +20 °C
Temperature dependence
Response time at +20 °C (+68 °F), 90 % response 15 s
Stability
Sensor HUMICAP
* Output signal corresponds to 0 ... 100 %RH
%RH
3
2
1
0
0 90 100
10 4020 605030 8070 %RH
-1
-2
-3
1.0
0.5
0
-0.5
-1.0
%RH
-5 °C, + 1 %
-10
20
10
0
30
+55, + 0,5 %
40
50
60 °
+2 % RH / 2 years
®
180
General - 60 series
Supply voltage 10 ... 35 VDC (RL = 0 ohm)
20 ... 35 VDC (RL = 500 ohm)
Output signal 4 ... 20 mA
General - 70 series
Supply voltage range depends on the selected output signal
DC AC
0 ... 1V 10 ... 35 V 9 ... 24 V
0 ... 5 V 14 ... 35 V 12 ... 24 V
0 ... 10 V 19 ... 35 V 16 ... 24 V
Power consumption @ 24 VAC
HMW70U 10 mA typical
HMW70Y 12 mA typical
General
Operating temperature range
electronics -5 ... +55 °C (+23 ... +131 °F)
Storage temperature range -40 ... +80 °C (-40 ... +176 °F)
Long-term humidity range for
electronics 0 ... 85 %RH
Housing
material ABS plastic
IP Class 30
Fire resistance UL94-HB
Colour NCS-2502-R
Connections screw terminals 0.5 ... 1.5 mm
Complies with EMC standard EN61326 and EN55022
2
Temperature (Y and T models)
Linearity better than 0.1 °C
Sensor Pt 1000 IEC 751 class B
Measurement range -5 ... +55 °C (+23 ... 131 °F) **
Accuracy'
** Optional temperature scales are available on request.
0.5
0.4
0.3
0.2
0.1
-0.1
-0.2
-0.3
-0.4
-0.5
• C
0
-10 100
206030
40
50
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
• C
Ref. B210840EN-A ©Vaisala 2009
This material is subject to copyright protection, with all
copyrights retained by Vaisala and its individual partners. All
rights reserved. Any logos and/or product names are trademarks
of Vaisala or its individual partners. The reproduction, transfer,
distribution or storage of information contained in this brochure
in any form without the prior written consent of Vaisala is strictly
prohibited. All specifi cations — technical included — are subject
to change without notice.
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