Method and means for continuously sampling a fluid

Details Method and means for continuously sampling a fluid Method and means for continuously sampling a fluid

1979-02-09

1980-12-02

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73 28, 340573, 417 45, G08B 2100

Patent

active

042374510

ABSTRACT:
An improved air-sampling pump of miniature size ideally suited for carrying on a person includes monitoring circuitry which controls motive pump-energizing signal applied to an air pump to ensure that sampled air is pumped through a test chamber at a substantially constant rate over an extended period of time and also includes alarm circuitry which provides comtemporary and residual indications of interrupted flow rate during the sampling period.

REFERENCES:
patent: 3501899 (1970-03-01), Allen
patent: 3956940 (1976-05-01), Guild
patent: 4063824 (1977-12-01), Baker et al.
patent: 4159635 (1979-07-01), Sehmel

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