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
52
TECHNICAL DATA - HMD/W 40 & 50 SERIES
Relative Humidity
Measuring range (for which
accuracy is specified): 10...90 %RH
Accuracy at +68°F (+20 °C) better than ±3 %RH
Stability ±2 %RH over 2 years
Temperature dependence: < ±1.5% RH from -14° to +140°F
(< ±1.5% RH from -10° to +60°C)
Sensor: INTERCAP
®
part no. 15778
Temperature (40 Y and 50Y)
Measuring range
HMD 40Y, HMD 50Y +14...+140° (-10...+60°C)
HMW 40Y, HMW 50Y +23...+131°F (-5...+55°C)
Total accuracy at +77°F (+25 °C) ±0.54°F (±0.3°C)
Temperature dependence 0.01°F/°F (0.01°C/°C)
Sensor PT 1000
IEC 751 Class B
General
Output signal for relative humidity:
HMD/HMW 40 series 4...20 mA
HMD/HMW 50 series 0...1 V and 0... 10 V
(equals 0...100 %RH)
Output signal for temperature:
HMD/HMW 40 series 4...20 mA
HMW 50 series 0...1 V and 0...10 V
HMD 50 series 0...10 V
HMD 40Y, HMD 50Y equals -40140°F (equals -40...+60 °C)
HMW 40Y, HMW 50Y equals -23131°F (equals -5...+55 °C)
Load resistance >20 Kohm
Power supply
HMD/W 40 10...28 VDC
HMD/W 50 12...35 VDC/12...24 VAC
(for 0...1 V output)
15...35 VDC/15...24 VAC
(for 0...10 V output)
Current consumption
HMD/W 40 4 mA minimum
HMD/W 50 6.0 mA typical
Operating temperature range;
HMD 40 and HMD 50 +14...+140 °F (-10...+60 °C)
HMW 40 and HMW 50 +23...+131°F (-5...+55 °C)
Storage temperature range -40...+140°F (-40...+60 °C)
Operating humidity range 0...100 %RH (duct mounted)
0...90 %RH (wall mounted)
Sensor protection
standard membrane filter,
part no. 17039
option plastic grid, part no. 17038
Housing material and
classifications ABS plastic, IP 65
(HMD 40U/Y and
HMD 50 U/Y)
Specifications subject to change without prior notice.
INTERCAP is a registered trademark of VAISALA.
1/2 " NPT conduit fitting adapter available.
Ø 32
Ø 22
Ø 12
Ø 15
54
302
213
36
15
53
42
Ø 4
80
80
HMD/W 40 and 50 Series
Dimensions in mm
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HMD/W
40/50
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