P.O. Box 26, FI-00421 Helsinki, Finland
Tel. +358 9 894 91
Fax: +358 9 8949 2485
Email: industrialsales@vaisala.com
www.vaisala.com/HMT330
HMT331 Humidity and Temperature Transmitter
for Demanding Wall-Mounted Applications
Features/Benefits
• For temperatures -40 ... +60 °C
(-40 ... +140 °F)
• Vaisala HUMICAP® Sensor for
excellent accuracy and stability
• High tolerance of chemicals
• Graphical display of measurement
trends and over four-year history
• Corrosion resistant metal IP65
housing
• NIST traceable (certicate included)
• Application examples: cleanrooms,
pharmaceutical processes,
greenhouses, swimming halls,
museums and archives
e Vaisala HUMICAP® Humidity and
Temperature Transmitter HMT331
is the top-of-the-line wall-mounted
transmitter for demanding HVAC and
condition monitoring applications.
Compared to regular wall-mounted
transmitters, the HMT331 oers:
• Higher measurement performance
• Better chemical tolerance
• Advanced graphical display
features
• More powering options
• More output options
• A wider variety of output humidity
parameters
Graphical display of history
and measurement trends
e HMT330 series features a large
numerical and graphical display,
allowing users to easily monitor
operational data, measurement trends
and one-year measurement history.
e optional data logger with real-time
clock makes it possible to generate over
four years of measured history, and
zoom in on any desired time or time
frame.
e battery backup of the real-time
clock guarantees a reliable logging of
measured data.
Outputs and power supply
options for every need
e output options include three analog
outputs, RS-232, RS-485, and alarm
relays.
e voltage supply range is from 10 to
35 VDC. With an additional module,
the transmitter can be connected to
all universal mains AC supplies. e
input/output cable can be fed through
the back of the transmitter, which is a
useful feature, especially for installations
in cleanrooms.
Technical Data
Temperature measurement range
-40 ... +60 °C (-40 ... +140 °F)
Accessories
PC software + cable 215005
USB-RJ45 Serial Connection Cable 219685
Connection cable for HM70 211339
Wall mounting plate (plastic) 214829
Pole installation kit 215108
Rain shield 215109
DIN rail installation set 215094
Dimensions
Dimensions in mm (inches)
e HMT331 is the state-of-the-art wall-mount humidity instrument.
e display shows measurement trends and
over four-year real time measurement history.
13Vaisala Instruments Catalog 2009
Ref. B210768EN rev. A
PRICE:
Order Guide: Page 138
(146 Seiten)
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