User`s guide

User’s Guide ______________________________________________________________________
60 ___________________________________________________________________M210662EN-A
symmetrical and housed under K5 glass domes. A white screen prevents
the body of the pyranometer from heating up.
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Figure 53 Albedometer CM7B
The CM7B albedometer is suitable for measuring net global radiation
and/or albedo over many differing types of surface. The sensor has
conical lower screen, to prevent illumination of the lower glass dome at
sunrise and sunset. The CM7B albedometer is constructed around two
CM6B 64-thermocouple sensors, which are rotationally symmetrical
and housed under K5 glass domes.
A white screen prevents the body from heating up. The albedometer is
equipped with a spirit level and screws for accurate levelling. A drying
cartridge keeps the interior free from humidity. The albedometer is
supplied with a calibrationcertificate.There are two operating modes for
an albedometer: net global radiation is measured with the sensors
connected in anti-series. Separate recordings of the outputs and a
subsequent measurement of the ratio of one output to the other yields
the albedo calculation.