380-280, 380-281, 380-283 Solar Radiation Shields View PDF Catalog Page

380-280 Solar Radiation Shield 380-281 Solar Radiation Shield 380-283 Solar Radiation Shield
380-280 Solar Radiation Shield 380-281 Solar Radiation Shield 380-283 Solar Radiation Shield

The Model 380-280 Solar Radiation Shield is a low cost solution for protecting temperature and relative humidity probes. It consists of four molded plastic plates and a powder coated aluminum mounting arm. The wedge-shaped plates provide maximum airflow around the probe while at the same time minimizing direct exposure of the probe tip to sunlight. The shield is shaped to allow natural air convection around the probe so that the air being measured inside the shield is a good representation of the outside air. The shield also provides protection from rain and snow. The 380-280 can be used with sensors from 0.25" diameter up to 0.75" diameter. The lower protective shroud provides added protection for sensors up to 8" in length.

The Model 380-281 Solar Radiation Shield is designed with a highly reflective white surface to reflect the sun's direct radiation. It is constructed of powder coated aluminum and consists of a flat deflection plate, three wedge-shaped plates, and a mounting arm. The wedge-shaped plates provide maximum airflow around the probe while at the same time minimizing direct exposure of the probe tip to sunlight. The use of multiple plates with openings in the top of each promotes a rising flow of air through the shield. The shield provides protection from scattered as well as direct radiation. The 380-281 is often used at weather stations where no ac power is available to run a motor aspirated shield. The Model 380-283 Fan Aspirated Solar Radiation Shield includes a solar powered fan mounted on top of the shield.

Specifications

380-280
Capacity: 1 probe (temperature, humidity, or temperature/humidity)
Radiation error: 2°F (1°C) @ WS > 3 mph
Material: UV stabilized ABS plates, PVC top cap and lower shroud, white powdercoated aluminum mounting bracket
Mounting: 1.25" o.d. U-bolt
Size: 4" Dia x 10" H (102 mm x 254 mm), mounting arm 6" L (152 mm)
Weight/shipping: 1 lb/2 lbs

380-281
Capacity: 1 probe (temperature, humidity, or temperature/humidity)
Radiation error: 2°F (1°C) @ WS > 3 mph
Material: Aluminum
Finish: Gloss white powder coat
Mounting: 1.25" o.d. U-bolt
Size: 6" Dia x 12.5" H (152 mm x 318 mm), mounting arm 6" L (152 mm)
Weight/shipping: 2.5 lbs/4 lbs (1.1 kg/1.8 kg)

380-283
Air movement per hour: 700 ft3 (20 m3)

Ordering Information

380-280 Self-Aspirated Solar Radiation Shield
380-281 Self-Aspirated Solar Radiation Shield
380-283 Fan-Aspirated Solar Radiation Shield, solar powered

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