The company Dr. E. Horn developed very early on an optical engine com­part­ment mon­i­tor­ing system for the detection of oil mist for 4-stroke diesel engines. Together with other sensors it forms a safety system on large 4-stroke com­bus­tion engines. The optical turbidity measurement is realized in many applications and is based on sensors of the FRG series.


Optical Transmitter


Optical Receiver


Measurement of turbidity in conveying air of compressors