 | CHP 1 | |
 | The CHP 1 pyrheliometer is the latest development in the field of solar radiation measurement. Building forth on the legacy of the CH 1, this instrument offers further improved accuracy and reliability. |
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| CH 1 | |
 | For direct solar radiation measurement research. Due to the quartz window the CH 1 covers the total solar spectrum between 200 to 4000 nm. |
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