 3022
Pyranometer
Description
All Weather Inc. offers two pyranometer models. Both models are designed
for measuring global (direct + diffuse) solar radiation (irradiance). The
Model 3022 is a First Class Pyranometer – the second of three classes
according to both WMO and ISO 9060 classification of thermopile-type Pyranometers.
Its good directional response, spectral selectivity, and temperature dependence
assures accurate and reliable measurements under normal environmental conditions.
The Model 3022 is ideal for routine solar radiation measurements.
The Model 3016 Pyranometer is a Secondary Standard Pyranometer – the
best of three classes according to both WMO
and ISO 9060 classification of thermopile-type pyranometers. It is ideal for
the most severe environmental conditions and because it exhibits no tilt dependence,
it can measure solar radiation on inclined surfaces as well as on plane surfaces.
For this reason, it is recommended by the International Energy Agency (IEA)
for solar collector testing or similar applications.
Features
Both Pyranometers are built inside a rugged, weather-proof anodized aluminum
case, the sensing element incorporates a thermopile element consisting of
64 thermocouple for the Model 3022, 100 thermocouple for Model 3016. In both
models, the thermocouple are imprinted on a thick-film substrate. The sensors
rest on a carbon-black disk, and is housed under double K-5 optical glass
domes. Heating of the sensors by incoming solar radiation produces a directly
proportional signal in the microvolt range. A replaceable desiccator cartridge
in the case prevents dew build-up on the inner sides of the dome, and a white
sun shield minimizes heating of the case. A spirit level allows accurate placement
of the sensor.
Since a thermopile pyranometer generates its own output signal, no external
power source is needed. Both models are provided with a shielded 3-wire 10
meter output cable. An internal surge arrestor is installed to lead off induced
lightning current to the case. Each pyranometer is supplied complete with
an individual calibration certificate (ln µV/Wm 2 ), installation guide,
and operating instructions.
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