Fiber-optic probe for absorbance and turbidity measurement

Details Fiber-optic probe for absorbance and turbidity measurement Fiber-optic probe for absorbance and turbidity measurement

1991-01-07

1993-08-31

McGraw, Vincent F.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

250573, 250575, 356440, 356 73, G01N 2153, G01N 2159

Patent

active

052413683

ABSTRACT:
An optical probe apparatus (10) is for testing physical properties of a fluid (F) such as turbidity. The apparatus comprises a probe assembly (16) removably insertable into the fluid. A photometric light source (12) generates light and fiber optic cables (14) transmits light to and from the probe assembly. Light entering the assembly is directed into the fluid, the light being absorbed or scattered by particles in the fluid as it passes therethrough. The amount of remaining light is sensed and a light output from the probe is produced whose intensity is a function of the amount of remaining light. A light detector measures the light output of the probe assembly and produces an indication of the absorbance or turbidity of the fluid.

REFERENCES:
patent: 4283146 (1981-08-01), Roussel
patent: 4643573 (1987-02-01), McLachlan et al.
patent: 4753530 (1988-06-01), Knight et al.
patent: 4786171 (1988-11-01), LeFebre et al.
patent: 4989942 (1991-02-01), Koenigsberg et al.
patent: 5013928 (1991-05-01), Ikeda et al.
patent: 5035508 (1991-07-01), Carter et al.

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