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
30
supporting bar
flange
100...320 mm (adjustable)
duct wall
Measured Variables
Relative Humidity
Measurement range 0...100%
Accuracy (including non-linearity and repeatability)
Maximum achievable when calibrated against high quality,
certified humidity standards: ±1%RH (0...90% RH)
±2%RH (90...100% RH)
When calibrated against salt solutions
(ASTM E104-85) ±2%RH (0...90% RH)
±3%RH (90...100% RH)
Response time (90%) at +68°F (+20
0
C) in still air
(with sintered filter) 15 s
Sensor HUMICAP
®
K
Re-Gaining Sensor HUMICAP
®
KC
Temperature
Measurement range -40...+176 °F (-40...+80 °C)
OR
-40...+248°F (-40°...+120°C)
Accuracy at +68°F (+20
0
C) ±0.36°F (±0.2°C)
Sensor PT 100 RTD IEC 751 1/3 Class B
Typical temperature dependence of electronics 0.005°F/°F
(0.005°C/°C)
Calculated Variables
Typical ranges:
dewpoint temperature -40...+212 °F (-40...+100°C)
mixing ratio 0...500 g/kg d.a.
absolute humidity 0...600 g/m
3
wet bulb temperature 32212°F (0...+100°C)
enthalpy -40...+460 kJ/kg (-17.2...+198.8 BTU/lb)
The accuracies of the calculated variables are limited by the
accuracies of the measured variables on which they are based,
namely RH and T. The RH and T accuracies are stated above
under Measured Variables.
Outputs
Two analog outputs selectable 0...20 mA 0...1V
and scaleable 4...20 mA 0...5V
0...10V
Serial output available RS 232C, RS 485/RS 422
digital current loop
Alarm relays* 2 relays 8A/230VAC/24VDC SPCO**
General
Connections screw terminals for 0.5 mm
2
wires (AWG 20)
Operating voltage 24 VDC/VAC (20...28V)
115 VAC/230 VAC option
Power consumption (standard configuration)
100 mA maximum
Recommended external load for current outputs < 500 ohm
Recommended external load for 0...1V ouput > 2 kohm
Recommended external load
for 0...5 and 0...10 V outputs > 10 kohm
Operating temperature range
for electronics -40...+140 °F (-40...+60°C)
with display cover 32...122 °F (0...50 °C)
with power supply unit -40...+113 °F (-40...+45 °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 protection PPS grid with stainless steel
(ø 13.3 mm) netting recommended.
Others, including sintered
filter, are also available.
Meets EC requirements on electromagnetic compatibility
(10V/m to 3V/m) depending on the filter
Specifications subject to change without further notice.
HUMICAP
®
is a registered trademark of Vaisala.
HMP 233
1/2" conduit fitting adapter available
65
145
120
104
133
Ø 6.5
Ø 13.5
cable length 2000,
5000 or 10 000 mm
or 15000
29
70
TECHNICAL DATA - HMP 233
Installation kit for duct mounting
* Simultaneous installation with alarm outputs and internal
power supply module is not possible.
** SPCO = single pole change over
cable length 2, 5 or 10 meters
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HMP 233
Maximum
Temp
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