| 摘要 |
The invention relates to an optical sensor ( 1 ) for determining particle and/or dye concentrations in liquid or gaseous media and to a method for operating the same. The optical sensor ( 1 ) comprises at least one measuring head. The measuring head consists of an emitter unit ( 2 ) with a semiconductor emitting element ( 9 ), which emits visible emission light beams ( 8 ), and with a receiver unit ( 3 ) with a semiconductor receiving element ( 10 ). The portion of the emission light beams ( 8 ), which pass through an absorption section containing liquid or gaseous medium, is guided onto the receiving element ( 10 ). An evaluating unit ( 6 ) is coupled to the measuring head via electric leads ( 4, 4 '), and the received signals, which are present at the output of the semiconductor receiving element ( 10 ), are evaluated inside said evaluating unit in order to determine the particle or die concentration.
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