Campbell-scientific LP02 Hukseflux Pyranometer Manual do Utilizador descarregar pdf (Página 14)

LP02 Pyranometer

5. Overview

The LP02 pyranometer is designed for continuous outdoor use. Due to its flat

spectral sensitivity from 280 to 3000 nm, it can be used in natural sunlight,

under plant canopies, in green houses or buildings, and inverted to measure

reflected solar radiation. Two LP02s can be used in combination to measure

albedo. The LP02 can also be used to measure most types of artificial light

(Xenon lamps, Halogen lamps, etc.).

The LP02 pyranometer consists of a thermopile sensor, housing, dome, and

cable. The thermopile is coated with a black absorbent coating. The paint

absorbs the radiation and converts it to heat. The resultant temperature

difference is converted to a voltage by the copper-constantan thermopile. The

thermopile is encapsulated in the housing in such a way that it has a field of

view of 180 degrees and the angular characteristics needed to fulfill the cosine

response requirements.

The LP02’s cable has a user-specified length that can terminate in:

• Pigtails that connect directly to a Campbell Scientific datalogger

(cable termination option –PT).

• Connector that attaches to a prewired enclosure (cable termination

option –PW).

• Connector that attaches to a CWS900 Wireless Sensor Interface (cable

termination option –CWS). The CWS900 enables the pyranometer to

be used in a wireless sensor network.

6. Specifications

Features:

• Compatible with most Campbell Scientific dataloggers

• Measures reflected solar radiation when inverted

• Provides measurements in direct sunlight, under plant canopies, when

the sky is cloudy, and in artificial light

• Includes bubble level and leveling screws eliminating need for a

separate leveling base, which simplifies installation

• Compatible with the CWS900-series interfaces, allowing it to be used

in a wireless sensor network

• Acceptable for providing the solar radiation data used in stability

estimations

• Dome protects thermopile and allows water to roll off of it

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Campbell-scientific LP02 Hukseflux Pyranometer Manual do Utilizador Página 14