On-line liquid samplers

Details On-line liquid samplers On-line liquid samplers

1976-03-18

1977-03-01

Swisher, S. Clement

Measuring and testing

Measuring vessel

417520, G01N 114

Patent

active

040096173

ABSTRACT:
Sampling apparatus for periodically withdrawing small samples of liquid flowing through a pipe. The apparatus embodies an intake passage communicating with a T-section in the pipe. Liquid in the intake passage is pumped by a diaphragm which is pulsed pneumatically at periodic intervals. A check valve in the intake passage has one end projecting into the diaphragm chamber and is pushed positively by the diaphragm to intake port-closing position. A second passage communicating with the intake passage has a pop valve which opens under the diaphragm-created pressure after the check valve closes. Each periodic sample is collected from the latter passage in a plastic bag or other container. The apparatus can be washed and sanitized while on line by hose and coupling unit placed on the apparatus.

REFERENCES:
patent: 3229527 (1966-01-01), Johnson
patent: 3371617 (1968-03-01), Klootwyk

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