Fluid sampler

Details Fluid sampler Fluid sampler

1985-10-29

1987-01-13

Levy, Stewart J.

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386463, G01N 110

Patent

active

046354875

ABSTRACT:
A rubber bladder enclosed in a pressure tank having a valved opening is inflated by bladder inflation means to a pressure corresponding to the hydrostatic or other pressure of the environment to be sampled. Once the apparatus is located in the environment which is to be sampled, means for slowly exhausting the gas from the bladder, possibly a pump, are activated whereby hydrostatic or other pressure collapses the bladder and a fluid sample quiescently fills the pressure tank through the valved opening. When sample collection is complete, the valved opening, which is locally or remotely controllable, is closed and the sample is retrieved. Residual or ullage gas in the bladder maintains the sample at the pressure at which it was collected. Bladder inflating means are again employed after apparatus retrieval to initiate sample flow from the tank to an examining device or instrument at the same pressure that exists in the sampler.

REFERENCES:
patent: 2699680 (1955-01-01), Ferguson
patent: 3277723 (1966-10-01), Bodman et al.
patent: 3866474 (1975-02-01), Hasselmann
patent: 3892130 (1975-07-01), Winget et al.
patent: 3950999 (1976-04-01), Edwards
patent: 4008621 (1977-02-01), Ostojic et al.

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