Volumetric sample adjustment assembly located outside a liquid process line

摘要

A volumetric sample adjustment assembly located outside of a process line to facilitate rapid changes in the sample volume without having to remove the sampler from the process line, from process pressure or without having to manually disassemble the collection head assembly, like some prior art devices. The volumetric sample adjustment assembly has a “gross adjustment” assembly to vary the gross sample volume within the predetermined range. This gross adjustment assembly uses a removable pin to vary the sample size. This removable adjustment pin may be removed and replaced in different positions to change the gross volume of the sample on short notice and without having to remove the sampler from the process line, from process pressure or without having to manually disassemble the collection head assembly.

主权项

1. A sample adjustment assembly associated with a pipeline, said assembly comprising:
an adjustment pin; a housing including two or more adjustment apertures therein, wherein each aperture is sized and positioned to selectively received said adjustment pin; a shaft extending through the housing for axial movement therewithin downwardly toward said pipeline and upwardly away from said pipeline, said shaft oriented perpendicularly to the adjustment pin when said adjustment pin is positioned in an aperture of the housing; a lock ring secured on the shaft for movement therewith within the housing, wherein said lock ring is positioned on the shaft below said adjustment pin when said adjustment pin is positioned in an aperture of the housing such that said adjustment pin restricts upward travel of the lock ring, and thereby restricts upward axial travel of the shaft.