Sensor for the measurement of the refractive index of a fluid an

Details Sensor for the measurement of the refractive index of a fluid an Sensor for the measurement of the refractive index of a fluid an

1986-03-12

1987-12-08

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

With illumination

250577, 429 91, G01F 2328

Patent

active

047111267

ABSTRACT:
A sensor for the measurement of the refractive index of a fluid and/or phase boundary between two fluids comprises a light guide in the form of a rod; one end of the rod is connected to both a light source and a detection element and the other end of the rod is reflective. If the sensor is used in a refractive index gauge the measurement should be independent of the liquid level; if the sensor is used in a level gauge, a digital measurement should be possible. The coating is provided with one or more cut-outs consisting of windows which are in direct contact with the surrounding fluid.

REFERENCES:
patent: 3054291 (1962-09-01), Landwer
patent: 3602037 (1971-08-01), Neu
patent: 3669772 (1972-06-01), Strack
patent: 3895964 (1975-07-01), Sakamoto
patent: 4045668 (1977-08-01), Pitt et al.
patent: 4287427 (1981-09-01), Scifres
patent: 4320291 (1982-03-01), Uramoto
patent: 4342919 (1982-08-01), Brogardh
Patent Abstracts of Japan, vol. 5, No. 157 (P-83) (829) Oct. 8, 1981 Japanese Patent application 56 90 244 (Nippon ITA Glass K.K.) 22-07-1981 "The whole article".

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