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DTR500 Solar Radiation and
Precipitation Shields
The Vaisala Radiation Shield
Series DTR500 are solar radiation
and precipitation shields support
humidity probe installations in
outdoor applications.
Shield protects sensor
The maintenance-free DTR500 series
shields protect the humidity and
temperature sensors from solar
radiation and precipitation. They
provide excellent ventilation while
blocking both direct and re ected
solar radiation.
The special plastic used in the plates
has excellent thermal characteristics;
the white outer surface re ects
radiation; the black inside absorbs
accumulated heat. The shields can
be easily installed on either a vertical
pole, horizontal beam, or a  at
surface.
The Vaisala Solar Radiation Shield
Series DTR500 are available in either
a 9 or 12-plate, model.
The DTR Shields can be used with
the following Vaisala probes:
• Vaisala HUMICAP
®
Humidity and
Temperature Probe HMP155
Vaisala HUMICAP
®
Humidity and
Temperature Transmitter HMT337
Vaisala HUMICAP
®
Humidity and
Temperature Transmitter HMT100
Choice of models and
installation accessories
Two models are available:
Nine-plate shield:
Vaisala Radiation Shield DTR502B
for HMT337, HMT100, PTU300 and
HMP155's additional T probe
Twelve plate shield:
Vaisala Radiation Shield DTR503A
for HMP155
Features/Benefi ts
Protects temperature and
humidity probes from
scattered, as well as, direct
solar radiation and rain.
Installs easily on a vertical
pole, horizontal beam or fl at
surface
Maintenance-free
Suitable for a wide range of
applications
Naturally ventilated
Choice of shields and
mounting accessories
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