On-line liquid samplers

Details On-line liquid samplers On-line liquid samplers

G - Physics

01

N

73/103

G01N 1/14 (2006.01) G01N 33/04 (2006.01)

Patent

CA 1061136

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 dia- phragm 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 dia- phragm 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.

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