ACTINOGRAPH, ASPIRATOR HYGROMETER ASSMAN, Helmann Rain Gauge Precipitation Recorder, OBS - Observarium Rain Gauge[16 Jan. 2012, 22:51:57]
Keterangan
Actinograph for recording radiation intensity and sunshine duration. Black/ white enameled bimetals serve as temperature-compensated measuring elements. Deflections of these bimetals are recorded on the drum through the pointer mechanism. The case is made of wether-resistant, white coated aluminum die casting and removable upper part with Macrolon panoramic hood. A glass dome is built into the upper part covering the measuring elements below.
Measuring range ; 0-1300 W/ square meter
Drum revolution ; 7 days