Composite sampling method and system

Details Composite sampling method and system Composite sampling method and system

1975-10-14

1976-10-19

Queisser, Richard C.

Measuring and testing

Measuring vessel

G01N 114

Patent

active

039864014

ABSTRACT:
A method and system for collecting fluid samples from a high velocity effluent comprises a pump which is periodically energized to draw the fluid through a sample chamber and into a collection container. The sample chamber comprises four valves which are operated automatically in response to negative hydraulic pressure generated by the pump, viz: an inlet valve for receiving fluid from the sampling point, a first outlet valve connected to the pump, a second outlet valve for draining the fluid samples to the collection container and an air release valve. During a sampling cycle, with the pump energized, fluid is drawn from the sampling point at a velocity greater than or equal to that of the effluent. The fluid is directed through the inlet and first outlet valves of the sample chamber and to a reservoir. At the end of the sampling cycle, with the pump de-energized, a fixed volume of the fluid remaining in the sample chamber is drained into the collection container through the second outlet valve. The pump is periodically energized by timer means so that fluid samples are collected throughout the day.

REFERENCES:
patent: 3412612 (1968-11-01), Carr
patent: 3589197 (1971-06-01), Brooks, Sr.
patent: 3896673 (1975-07-01), Audouze et al.
patent: 3901084 (1975-08-01), Brailsford
patent: 3924471 (1975-12-01), Singer

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