Arrangement for cleaning an optical window in a process

Details Arrangement for cleaning an optical window in a process Arrangement for cleaning an optical window in a process

1995-02-16

1996-10-08

Nguyen, Thong

Optical: systems and elements

Protection from moisture or foreign particle

Fluid directed across optical element

359507, 356128, 356136, G02B 718, G01N 2141

Patent

active

055637370

ABSTRACT:
An arrangement for cleaning an optical window in an instrument such as a refractometer located in-line in a continuous or batch process, comprising a nozzle for spraying under high pressure a harmless cleaning medium onto the optical window. The nozzle is firmly fixed in a nozzle frame, the frame itself being firmly attached to the instrument in the vicinity of the optical window. The nozzle is recessed in the frame. The invention achieves cleaning of the optical window without mechanical parts or strong solvents, and does not require removal of the instrument from its in-line position.

REFERENCES:
patent: 3027644 (1962-04-01), Piscitelli
patent: 3516723 (1970-06-01), Guier
patent: 3625437 (1971-12-01), Garrigou
patent: 3628867 (1971-12-01), Brady
patent: 3861198 (1975-01-01), Shea
patent: 4172428 (1979-10-01), Pariset
patent: 4281646 (1981-08-01), Kinoshita
patent: 4516288 (1985-05-01), Fizyta et al.
patent: 4658113 (1987-04-01), Vingerling
patent: 4874243 (1989-10-01), Perren

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