Sample collecting apparatus

Details Sample collecting apparatus Sample collecting apparatus

1975-03-31

1976-10-12

Swisher, S. Clement

Measuring and testing

Volume or rate of flow

Combined

73421B, G01N 114

Patent

active

039850285

ABSTRACT:
An apparatus for continuously collecting small-amount samples from a stream in response to the flow rate of the stream. The apparatus includes piston cylinder means which can receive a sample of the volume proportional to the measured flow rate and subsequently discharge the collected sample into sample collecting or storing means. The piston cylinder means comprises a piston member and a cylinder member. During the sample collecting cycle, the piston member moves by a distance corresponding to the measured flow rate during a constant period of time. This piston moving distance defines the amount of the sample to be collected. During the subsequent sample discharging operation, the piston is quickly returned and the collected sample is discharged. These cycles are automatically repeated.

REFERENCES:
patent: 2637211 (1953-05-01), Norman
patent: 2925735 (1960-02-01), Tapp et al.
patent: 2927465 (1960-03-01), Smith

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