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
56
TECHNICAL DATA - HMM 22D AND HMM 30C
HUMIDITY TRANSMITTERS - HMM 22D
General
Input voltage: 10 to 35 VDC (R
L
=0 ohms)
20 to 35 VDC (R
L
=500 ohms)
Output signal: 4 to 20 mA (true two-wire)
Electrical
Connections: Screw terminals for wires
0.5 to 1.5 mm
2
Sensor protection: Membrane filter or
Sintered filter (optional)
Dimensions: 55 x 42 mm
Operating temperature range
Electronics: +23 to +131 °F (-5 to +55 °C )
Sensor: -40 to +176 °F (-40 to +80 °C)
Cable length: 65 cm (25.6 in)
Probe dimensions: ø 12 mm
Relative Humidity
Measuring range: 0 to 100% RH
Accuracy at +68°F (+20 °C) ±2% RH (0 to 90% RH)
±3% RH (90 to 100% RH)
(includes calibration inaccuracy,
nonlinearity, nonrepeatability)
Temperature
coefficient: ±0.02%RH/°F (±0.04%RH/°C) when electronics
& probe in same temp.
90% response time: 15 sec with membrane filter
Sensor: HUMICAP
®
HUMIDITY TRANSMITTER - HMM 30C
General
Output Supply Voltage
DC DC AC
0 to 1 V 10 to 35 V 9 to 24 V
0 to 5 V 14 to 35 V 12 to 24 V
0 to 10 V 19 to 35 V 16 to 24 V
0 to 20 mA 10 to 35 V 9 to 24 V (R
L
= 0 ohm)
0 to 20 mA 20 to 35 V 17 to 24 V (R
L
=500 ohm)
Electrical Connections: Screw terminals for wires
0.5 to 1.5 mm
2
Sensor protection: Sintered filter
Operating temperature range:
Electronics: +23 to +131 °F (-5 to +55 °C)
Sensor: -40 to +320°F (-40 to + 160°C)
Cable length: 1.6 m (5 ft)
Probe dimensions: ø 12 mm, length: 200 mm
Relative Humidity
Measuring range: 0 to 100% RH
Accuracy at +68°F (+20 °C): ±2% RH (0 to 90% RH)
±3% RH (90 to 100% RH)
(includes calibration inaccuracy,
nonlinearity, nonrepeatability)
90% response time: 15 sec
Sensor: HUMICAP
®
H
Specifications subject to change without notice.
Humicap
®
is a registered trademark of Vaisala.
HMM 30C
Dimensions in mm
ONE POINT CALIBRATION
CONNECTOR
HUMIDITY CALIBRATION
42.5
55
OUT+-
12 3
215 1500
Ø12
0 ... 1 V 0 ... 5 V 0 ... 10 V 0 ... 20 mA
OUTPUT SELECTION
HMM 22D
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HMM
22D/30C
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