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
36
ball valve
(Part No. DMP 248BVS)
Installation with
ball valve set.
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°C)
in still air (with sintered filter) 15 S
Sensor HUMICAP® K
Re-gaining sensor HUMICAP
®
KC
Temperature
Measurement range -40°...+356°F (-40°...+180°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 0.005°F/°F (0.005°C/°C)
dependence of electronics
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/m3
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 values are limited by the
accuracies of the measured quantities 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 scalable 4...20 mA 0...5V
0...10V
Serial output available RS 232C, RS 485/RS 422
or digital current loop
Alarm relays 2 relays 8A / 230VAC/24VDC SPCO
General
Connections screw terminals for 0.5 mm2
wires (AWG 20)
Operating voltage 24 VDC/VAC (20...28V)
Power consumption (standard configuration)
100 mA maximum
Recommended external load
for current outputs < 500 ohm
Recommended external load
for 0...1V output > 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 mm2
shielded cable
Cable lengths 2, 5, or 10 meters
Sensor protection stainless steel sintered filter
(ø 13.5 mm) PPS grid with stainless steel
netting
Meets EC requirements on electromagnetic compatibility
(10V/m to 3V/m) depending on the filter.
TECHNICAL DATA - HMP 238
¯5.5
178
31
29
¯13.5
PR
O
BE UP
PROBE PUSHED DOWN
cable length
2,
5 or 10 m
adjustment
range 120 mm
fitting body hex = 2
4
nut hex = 27
R 1/2 keg. ISO 7/1
(1/2 NPT adapter available)
process pipe
Electronic housing
HMP 238
Dimensions in mm
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