 3024
Albedometer
Description
The model 3024 Albedometer is designed for measuring net global radiation
and/or albedo (the fraction or ratio of incident radiation reflected by a
surface) over many different types of surface. It consists of two matched
Model 3022 first class pyranometers mounted on a 500 mm long rod. The top
sensor faces up and it measures incoming global radiation, while the lower
sensor faces down and it measures reflected solar radiation. If the sensors
are connected in anti-series, the net global radiation is measured. When the
outputs are measured separately, the albedo can be calculated by dividing
reflected by global radiation.
Features
Heating of each sensor by incoming or reflected solar radiation produces
a directly proportional signal in the microvolt range. The upper sun shield
prevents excessive heating of the pyranometer body by solar radiation, and
the lower screen prevents direct illumination of the lower domes by the sun
at sunrise and sunset. A drying cartridge keeps the interior free from humidity.
The Model 3024 is equipped with a spirit level for accurate leveling. The
compact construction minimizes the shadow effect.
A shielded 5-wire 10 meter output cable is provided. An internal surge arrestor
is installed to lead off induced lightning current to the case. Each albedometer
is supplied complete with an individual calibration certificate (ln uV/Wm2),
installation guide and operating instructions.
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