HUMIDITY
554
HUMIDITY
9
WHEN YOU NEED IT RIGHT, RIGHT NOW, CALL KELE.
kele.com888-397-5353 USA
March 2014
ORDERING INFORMATION
DEW POINT, ENTHALPY & WET BULB TRANSMITTERS
HMD/S/W8XD/H/W SERIES
Supply Voltage 10 - 28 VDC
Accuracy
Dew Point, Wet Bulb & Dry Bulb
±1.8°F (1.0°C)
Enthalpy ±2 BTU/lb
Relative Humidity ±3% RH
Signal Output (2, Dry Bulb Temperature & Model
Specific) 4-20 mA @ 600
Measurement Range
Dew Point, Wet Bulb & Dry Bulb
-40° to 140°F (-40° to 60°C)
Enthalpy -10 tp 190 BTU/lb (-40 to 460 kj/hg)
Relative Humidity 0 to 199%
Sensing Technology Viasal Intercap®
Operating Humidity 0 to 99 % non-condensing
Operating Temperature -40° to 140°F (-40° to 60°C)
Dimensions
Duct 5.2" H x 2.8" W x 11.5" D
(13.1 x 7.2 x 29.1 cm)
OSA 8.1" H x 4.8" W x 3.9" D
(20.7 x 12.2 x 10 cm)
Room 7.6" H x 2.8" W x 1.6" D
(19.3 x 7.2 x 4.1 cm)
Approvals CE
Weight
Duct 0.65 lb (0.29 Kg)
OSA 1.6 lb (0.72 Kg)
Room 0.25 lb (0.11 Kg)
Warranty 1 year
DESCRIPTION
The Vaisala Model HMX8XD Dew Point, HMX8XW Wet
Bulb, and HMX8XH Enthalpy Transmitters are rugged,
compact, and ideally suited for monitoring dew point,
wet bulb, or enthalpy in building automation and process
applications. Using a Vaisala Intercap
®
RH sensor and an
RTD temperature sensor, the unit's microprocessor computes
the dew point, wet bulb, or enthalpy. Two linear outputs
provide a 4-20mA signal for dew point, wet bulb, or enthalpy,
and a 4-20 mA signal for dry bulb. temperature.
FEATURES
• Dew point, Wet Bulb and Dry Bulb accuracy of ±1.8°F
(±1°C) over the specified range
• Enthalpy accuracy of ±2 BTU/lb over specified range
• Two 4-20 mA output signals
• Microprocessor-based signal processing
• Weather resistant duct/OSA mounting
• Temperature compensated
MODEL DESCRIPTION
HMD82TD Duct dew point and dry bulb transmitter
HMS82TD Outside Air dew point and dry bulb transmitter
HMW88TD Room dew point and dry bulb transmitter
HMD82H Duct ehtanlpy and dry bulb transmitter
HMS82H Outside Air enthalpy and dry bulb transmitter
HMW88H Room enthalpy and dry bulb transmitter
HMD82W Duct wet bulb and dry bulb transmitter
HMS82W Outside Air wet bulb and dry bulb transmitter
HMW88W Room wet bulb and dry bulb transmitter
HMD82 Duct dry bulb and dry bulb transmitter
HMS82 Outside Air dry bulb and dry bulb transmitter
HMW88 Room dry bulb and dry bulb transmitter
APPLICATION
• Dew point for supply air setpoint (condensation
prevention)
• Enthalpy for economizer efficiency
• Wet bulb for evaporative cooling decision potential
SPECIFICATIONS
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HMD82
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(63 Seiten)
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