A Shipboard Oil-in-Water Content Monitor Based on Oil Fluorescence.

摘要

A significantly improved Oil-In-Water Content Monitor has been developed and tested. A major improvement involves the use of dual polychromators to present a total luminescence image. Using a computer-designed mask,the fluorescence from various spectral regions is summed to produce approximately equal response from many oil mixtures. The monitor produces a real time output which is linear in oil concentration and which can be calibrated directly in ppm. While the fluorescence process is essentially instantaneous, (10to the -8th sec),instrumental response is determined by the electronic time constant selected,usually 1second. Auxillary transmission and scatter channels permit correction of scattering from particulates. The monitor has been tested with seventeen oil mixtures from 0to 125ppm,showing linear response with a standard deviation of 25.9% (at 50ppm) for all oils,and a standard deviation of 18.1% when the heaviest oil mixture F2r,is omitted. Results of the laboratory test program are fully documented,potential problems are discussed,and recommendations for further improvements are included.