Spectrophotometric probe for insitu measurement

Details Spectrophotometric probe for insitu measurement Spectrophotometric probe for insitu measurement

1996-10-15

1998-01-27

Evans, F. L.

Optics: measuring and testing

For light transmission or absorption

Of fluent material

356440, 250576, G01N 2159

Patent

active

057127107

ABSTRACT:
A portable, hand-held spectrophotometric probe detects the concentration of a material dissolved in a liquid bath. The probe has an elongate hollow handle with an open lower end. A transparent cylindrical cell is attached to the lower end of the handle and fills with liquid when the cell is immersed in the bath. A source of light whose spectrum includes an absorption band of the dissolved material is mounted in the handle and transmits light through the cell to a photodetector. The photodetector produces a signal indicative of the intensity of the light, and the signal is transmitted along wiring to a signal outlet in the upper end of the handle. A hand-held processing unit is coupled with a cable to the outlet to receive the signal and then calculates and displays the concentration of the dissolved material.

REFERENCES:
patent: 3319514 (1967-05-01), McAllister, Jr.
patent: 3727066 (1973-04-01), Louderback et al.
patent: 3734629 (1973-05-01), Griffiths et al.
patent: 4719359 (1988-01-01), Rose

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