If an oil-in-water content monitor uses a lamp emitting light in the visible spectra in conjunction with a reference photo-cell and a sampling photoce...

Question

If an oil-in-water content monitor uses a lamp emitting light in the visible spectra in conjunction with a reference photo-cell and a sampling photocell, what is the operating principle upon which this oil-in-water content monitor works?

Accepted Answer

The monitor works on the absorption/scattering principle where the greater the oil content, the less the amount of visible light detected by the sampling photo-electric cell as compared to the reference photo-electric cell.

Engine: Expired / General Subjects

If an oil-in-water content monitor uses a lamp emitting light in the visible spectra in conjunction with a reference photo-cell and a sampling photocell, what is the operating principle upon which this oil-in-water content monitor works?

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