The shield employs a triple walled intake tube and multiple canopy shades to effectively isolate the sensor from precipitation and solar radiation. A continuous duty DC blower provides constant flow of ambient air over the sensor. A tachometer output may be used to monitor blower operation. A variety of temperature and relative humidity probes are available.
Specifications
Radiation Error:
Ambient Temperature: 0.2 °C (0.4°F) RMS @ 1000 W/m2
Delta T: 0.05 °C (0.1°F) RMS with like shields equally exposed
Aspiration Rate:
5 to 11 m/s (16 to 35 fps) depending on sensor
Power Requirement:
12 to 14 VDC @ 500 mA
Construction:
UV stabilized white thermoplastic shield, aluminum mounting bracket, stainless steel U-bolt
Dimensions:
Overall: 33 cm (13 in) H x 20 cm (8 in) Dia
Shield: 70 mm (2.8 in) Dia x 12 cm (4.7 in) L