Sampling device for measuring instruments

Details Sampling device for measuring instruments Sampling device for measuring instruments

1979-08-15

1980-12-09

Swisher, S. Clement

Measuring and testing

Measuring vessel

G01N 110

Patent

active

042377331

ABSTRACT:
The sample device includes a magazine having a rotatable turntable carrying a plurality of circumferentially spaced chambers for receiving sample vessels and movable axially between a sample changing positon and a sampling position. In the sample change position, each sample vessel is pushed against a laterally displaceable closure plate to uncover an aperture in a bottom closure member whereby the sample vessel is receivable in a chamber registered with the aperture. A cradle is carried by the bottom closure member to support the sample vessel as it is displaced through the aperture into the registering chamber. When a selected vessel is aligned with a sampling opening through a closure plate on the opposite side of the turntable, the magazine is displaced axially into the sampling position with the axial displacement causing a needle to pierce the self-sealing diaphragm on the sample vessel. Sampling is effected by pressurizing the vessel and drawing sample components in the vapor phase into the injection block of the gas chromatographic instrument.

REFERENCES:
patent: 3545279 (1970-12-01), Jentzsen
patent: 3549330 (1970-12-01), Jungner
patent: 3631724 (1972-01-01), Oster
patent: 3764268 (1973-10-01), Kosowsky

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