Liquid sampler having an in-line valve

Details Liquid sampler having an in-line valve Liquid sampler having an in-line valve

G - Physics

01

N

G01N 1/10 (2006.01) G01N 1/20 (2006.01)

Patent

CA 2418263

A sampling apparatus is characterized by a sampler operable to obtain samples of liquid product from a body of product in a vessel. The sampler includes a plunger having a sample receiving recess and a connecting device couples the sampler to the vessel at an aperture m the vessel. The sampler is attached to the connecting device and the connecting device is moveable between a first position placing the sampler into, and a second position taking the sampler out of, communication with the aperture. With the connecting device in the first position, the plunger is reciprocated to extend the plunger and its recess through the connecting device and vessel aperture into product in the vessel to receive a product sample in the recess. The plunger is then retracted from the vessel and through the connecting device to deliver the product sample to a collection point. During reciprocation of the plunger, a liquid seal is maintained between the vessel interior and sample collection point, and when the connecting device is moved to the second position, the sampler can be detached from the connecting device for service or repair, without escape of liquid from the vessel through the connecting device. Advantageously, the sampler remains stationary during movement of the connecting device between the first and second positions, so that additional space in which to accommodate movement of the sampler is not required when attaching the sampler and connecting device to the vessel.

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