Apparatus for on-line spectrophotometric chemical analysis of ma

Details Apparatus for on-line spectrophotometric chemical analysis of ma Apparatus for on-line spectrophotometric chemical analysis of ma

1986-02-20

1988-01-05

Richman, Barry S.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

356246, 422102, G01N 2109

Patent

active

047178272

ABSTRACT:
A spectrophotometric apparatus (10) utilizes a sample cell (14) to perform infrared spectrophotometric analysis on a moving process stream (11) containing, for example, polymer melt. Material to be analyzed flows between two closely spaced-apart crystals (40) in an observation chamber (42). Infrared radiation is transmitted from one side of the material through it to the other side. Crystals (40) are contained within threaded retainers (38) and (39) positioned in a bore. The retainers (38) and (39) can be moved towards and away from each other to vary the absorption rate of the material.

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"A Variable Path Length Infrared Cell for Use at Elevated Temperatures", LaTrobe University, 1973, by G. Butt, J. Chippindall, B, Ternai and R. D. Topsom.
"On-Line Monitoring System for Beverage Packaging Lines", American Laboratory, Dec. 1985, by Paul Wilks.

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