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Contacting davis instruments, Theory of operation – DAVIS Vantage Pro ISS Fan-Aspirated Add., 2003 & later User Manual

Page 15

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Theory of Operation

Page 15

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Theory of Operation

The diagram below shows how the Fan-Aspirated Radiation Shield draws out-
side air up through the sensor chamber and between the three walls surround-
ing the sensor chamber.

MOTOR

FAN

SENSOR

CHAMBER

Cross-section of Fan-Aspirated Radiation Shield

ISS Fan Rev B.fm Page 15 Thursday, November 14, 2002 4:29 PM