Method for measuring spray jet leaving spray nozzle

摘要

The method involves illuminating the spray jet leaving with parallel light beams. A photodetector measures the light transmitted through the spray jet (6). The photodetectors produce at least two output signals, which arise from light detected that has passed through different parts of the spray jet. OPTICS - Preferably, the optical system includes three laser beams (L1,L2,L3), which are arranged lying opposite three photodetectors (P1,P2,P3). The system measures absorption rather than reflection.