Hukseflux VU01, User Manual, Page: 8 / 25

VU01 manual v1614 8/25
2 Instrument principle and theory
Figure 2.1 Overview of VU01 with SR20:
(1) SR20 cable
(2) SR20 connector
(3) SR20 dome
(4) VU01 cover
(5) VU01 fixation of cover
(6) VU01 levelling feet
(7)
VU01 filter retainer
(8) VU01 ventilator, heaters and filter replacement system (below cover)
(9) VU01 connector
(10) VU01 cable and cable connector
Ventilation promotes thermal equilibrium between all components of radiometers, and
thereby reduces zero offsets. Dew and frost formation is prevented. Additional heating
will promote evaporation of water droplets and sublimation of snow. It should be noted
that heating in combination with pyranometers will lead to increased thermal offsets, so
heating is only recommended if necessary.
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