Apparatus for providing a controlled concentration of a substanc

Details Apparatus for providing a controlled concentration of a substanc Apparatus for providing a controlled concentration of a substanc

1975-11-21

1977-04-19

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 1G, 137268, 261 38, 261104, G01N 2700, B01F 100

Patent

active

040180778

ABSTRACT:
Apparatus comprising a liquid flow path having two parallel connected sections, namely a first section adapted to provide turbulent flow and a second section adapted to provide laminar flow. Water flowing through the apparatus divides between the two sections in a ratio which is arranged to be independent of the total flow, the flow through the second section being saturated with oxygen. The apparatus thus provides a controlled concentration of oxygen. Temperature compensation is achieved by arranging for changes in the flow ratio caused by viscosity variations to compensate for variations in oxygen solubility.

REFERENCES:
patent: 1964576 (1934-06-01), Horne
patent: 3165114 (1965-01-01), Garrett
patent: 3218841 (1965-11-01), Lerner
patent: 3894419 (1975-07-01), Mator et al.

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