Specifications

100 Commerce Way, Woburn, MA 01801
TEL: 1-888-VAISALA (824-7252) FAX: [phone]
E-MAIL: [e-mail] Access catalog on-line at: www.vaisala.com/inc/ssdcat
64
Dewpoint difference (˚C)
Accuracy in dewpoint measurement (˚C)
0
1
2
3
4
5
0
20 40 60 80 100
-20
0
20
40
60
-40
Dewpoint temperature (˚C)
100
80
Dewpoint Temperature
Measurement range -40...+212 °F (-40...+100°C)
Reponse time (90%) at 68°F (+20°C) 15 s
in still air (with sintered filter)
Sensor HUMICAP® KC
Accuracy: find the intersection of the dewpoint temperature
curve and the dewpoint difference reading (process tempera-
ture-dewpoint temperature) on the x-axis and read the
accuracy in dewpoint measurement at the y-axis.
Temperature (option)
Measurement range -40...+356 °F (-40...+180°C)
Typical accuracy at 68°F (+20°C) 0.18°F (±0.1°C)
Typical temperature dependence 0.005 °F/°F (0.005 °C/°C)
of electronics
Sensor Pt 100 RTD
IEC 751, class 1/4 B
Outputs
Two analog outputs 0...20 mA, 4...20mA,
selectable and scaleable 0...1 V, 0...5 V, 0...10V
Typical accuracy of analog ±0.05% FS
output at 68° F (+20°C)
Typical temperature dependence 0.005 % FS/°F
(0.005 % FS/°C)
of analog output
Serial output available RS 232C
cable length 2000,
5000 or 10000 mm
Ø 13.5
Ø 5.5
70
29
cable length 2000,
5000 or 10000 mm
64
Ø 6
93
Ø 3.1
Ø 5.5
Calculated Variables
Available only when temperature sensor head is in use.
Typical ranges
relative humidity 0...100 %RH
dewpoint difference 0...+90 °F (0...+50 °C)
mixing ratio 0...500 g/kg d.a.
absolute humidity 0...600 g/m3
wet bulb temperature 32+212°F (0...+100 °C)
Accuracy of RH measurement ±(0.5 %RH + 2.5% of reading)
General
Connections screw terminals for 0.5 mm
2
wires (AWG 20), stranded
wires recommended
Operating voltage 24 VDC/VAC (20..28 V)
Power consumption 200 mA max. (24 VDC)
during re-gaining 270 mA max. (24 VDC)
Recommended external load for
current outputs < 500 ohm
0...1 V ouput > 2 kohm (to ground)
0...5 & 0...10 V outputs > 10 kohm (to ground)
Electromagnetic compatibility IEC 801-3
with sintered filter HMP 2433 V/m
with steel netting PPS grid 10 V/m
Operating temperature range for
electronics -40...+140 °F (-40...+ 60 °C)
with display cover +32...122 °F (0...+50 °C)
Storage temperature range -40...+158 °F (-40...+70 °C)
Housing material G-Alsi12 (DIN 1725)
Housing classification NEMA 4 (IP 65)
Bushing for 7...10 mm diameter
cables (8 x 0.5 mm
2
shielded cable)
Sensor head cable lengths 2, 5, or 10 meters
Humidity sensor protection sintered filter of stainless
Ø 13.5 mm steel
PPS grid with steel netting
Specifications subject to change without prior notice.
HUMICAP
®
is a registered trademark of Vaisala.
65
145
120
104
133
Ø 6.5
TECHNICAL DATA - HMP 243
HMP 243
cable length 2.5, or 10 meters
cable length 2, 5, or 10 meters
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Dewpoint
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