Optical high-pressure transmission cell
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United States of America Patent
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-
Mar 26, 1991
Grant Date -
N/A
app pub date -
Dec 29, 1989
filing date -
Jul 2, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Optical high-pressure transmission cells of the type used, for example, for SFC-FTIR, comprise a pressure-resistant housing part with two intersecting bores, one of them forming a fluid passage and the other one forming a light transmission path. The bore forming the light transmission path is provided with inserted windows. There is a demand in infrared spectroscopy, for supercritical fluid chromatography, for particularly pressure-resistant cells of simple design, which demand has not been satisfied heretofore. In the case of the proposed measuring cell, the windows are designed as stepped windows having central cylindrical neck portions engaging the bore serving as a light transmission path so that the chamber is delimited by end faces of the neck portions. Sealing is effected by O-rings.
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