Measuring and testing – Measuring vessel
Patent
1979-04-18
1981-01-13
Swisher, S. Clement
Measuring and testing
Measuring vessel
G01N 114
Patent
active
042442249
ABSTRACT:
An automatic sampler for gases and liquids. The sampler has a pump which pumps a sample of a gas or a liquid from a source into a sample cylinder and a control mechanism for the pump. The control mechanism has a pressure regulator, an adjustable pneumatic timer, and a three-way button valve. The pump itself has an inlet valve which permits gas or liquid to flow into a cylinder. A piston in the cylinder moves to an appropriate position so that a desired size sample is trapped in the cylinder. The sample is then expelled through an outlet valve to a container such as a sample cylinder. The piston of the pump cylinder has a stinger projecting from one of its ends so that as the piston begins to move, the stinger shuts off the chamber that holds the sample. The inlet valve of the pump has a spring loaded plunger mounted within a cavity within the valve such that the plunger occupies a large part of the space in the cavity.
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Tejas Gas Sampling System-A sales brochure of Tejas Instrument Engineers, 130 Lane Lane, Spring, TX 77373.
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