Method and apparatus for measuring specific gravity of a flowing liquid

摘要: A method and apparatus for continually measuring the specific gravity of a flow liquid. The liquid is caused to across flat measurement surface defined by light transmissive shelf member. surface, i.e. interface between member sample thereon, illuminated rays incident at angles greater than less critical angle reflect boundary line whose position dependent on thus sample. reflected projected onto photovoltaic which, together with detector electronics, determines respect associated reference difference in used electronics determine table lookup procedure.