Radiation sensor to measure different kinds of radiation
Sensor type 6038.1000 measures sunshine duration Sunshine duration is defined by the World Meteorological Organisation as the time during which the direct solar radiation exceeds 120 W/m2. It has no moving parts and uses 3 photo-diodes with specially designed diffusers to make an analogue calculation of when it is sunny. The output is switched high or low to indicate sunny or not sunny conditions. The calculated direct irradiance value is available as a voltage output.
The instrument is designed for continuous outdoor use and the waterproof plug-and-socket cable connection provides for easy installation and servicing. A humidity indicator progressively changes colour to show when it is necessary to change the drying cartridge, which is located under a screw-on cover. The recommended recalibration interval is 2 years.
The type 6038.1000 sensor operates from 12 VDC power and has two levels of built-in heating. Level 1 is to prevent the formation of dew. Level 2 prevents frost, and even ice, forming on the instrument. The heaters are normally switched externally but an optional internal thermostat control is available