Sensor for determining concentration of materials contained in fluid or gaseous medium, has measuring head comprises comprise of transmitter unit emitting transmission light beams and receiver unit has semiconductor receiver element

摘要

The sensor (1) has a measuring head comprises of a transmitter unit emitting transmission light beams. An absorption path is guided on the receiver unit (3) with the part of the transmission light beams extending through the medium. The transmitter unit has a semiconductor transmitter element (9), which emits transmission light beams (8) outside the visible wavelength area. The receiver unit has a semiconductor receiver element (10) receives the transmission light beams. The translucent materials are formed of epoxy resins, polymethacrylate, glass, polytetrafluorethylen or polyalkene.