Vaisala HMD70U Manual de Serviço Página 32

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HMD42/53 Humidity and Temperature
Transmitters for Ducts in Commercial
HVACApplications
Features/Benefits
Designed for building
automation applications
±3 %RH accuracy
Full 0 ... 100 %RH measurement
range
-20 ... +60 °C (-4 ... +140 °F)
operating range
IP65 (NEMA 4) metal housing
Excellent stability and high
reliability
Fully interchangeable Vaisala
INTERCAP
® Sensor
Variety of analog signal
outputs available
Typical Applications
Office buildings
Retail spaces
Governmental buildings
Educational facilities
Sport and event complexes
Hotels and conference centers
Airports
Metro stations
The duct mounted Vaisala INTERCAP
®
Humidity and Temperature
Transmitters HMD42 and HMD53 are
designed for building automation
applications. They combine reliable
operation with excellent stability,
providing low cost of ownership to
the user.
Flexibility in Humidity
and Temperature
Measurement
The HMD42/53 transmitters measure
humidity with a ±3 %RH accuracy and
temperature with a ±0.4 °C (±0.72 °F)
accuracy. They feature various
selectable analog output signals and
they can be powered by either AC or
DC voltage.
Easy Maintenance
The HMD42/53 humidity transmitters
use Vaisala INTERCAP
®
Sensor - the
interchangeable capacitive humidity
sensor. The transmitters require no
recalibration if the sensor is changed.
This means great savings in overall
maintenance costs.
Reliable Performance in
Harsh Environments
The duct mount HMD42/53
transmitters can be installed in
various measurement environments
due to the robust IP65 (NEMA4) rated
metal enclosure, which protects the
sensor from dust and splashes of
water. The wide measurement
temperature range from -20 °C to
+60 °C (-4 ... +140 °F) covers most
HVAC applications.
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