Vaisala HMD70U Service Manual Page 27

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25
Technical Data
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 specifications — technical included — are subject
to change without notice.
For more information, visit
www.vaisala.com or contact
us at sales@vaisala.com
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
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 - 60 Series
Supply voltage 10 ... 35 VDC (RL = 0 ohm)
20 ... 35 VDC (RL = 500 ohm)
Output signal 4 ... 20 mA
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
2
Complies with EMC standard EN61326 and EN55022
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.
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
+2 %RH / 2 years
Sensor HUMICAP
®
180
* Output signal corresponds to 0 ... 100 %RH
10 4020 605030 8070 %RH
%RH
3
2
1
0
-1
-2
-3
0 100
-10100
40
50
20
60
30
•C
•C
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
20
0
1.0
0.5
0
-0.5
-1.0
40
60
°C
10
-10
30
50
%RH
-5 °C, + 1 %
+55, + 0,5 %
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