抄録
A simple pyranometer for use in the artificially accelerated weathering apparatus was constructed. It can measure and record the total irradiance on the specimen. The irradiance detector was made of two platinum pieces (Each 5×3×0.03mm), one being Pt-blackened and the other Aldeposited, and a CA differentia thermocouple (0.1mmφ) was attached to these pieces.
The time to reach one half of equilibrium emf value was about 3.0sec. The emf of differential thermocouple in the accelerated weathering apparatus of 6kW water cooled xenon lamp (ASTM E 239 type) was about 0.7mV. The relation between the emf of differential thermocouple and the irradiance on the detector may be calibrated against a commercial calibrated pyranometer.
