Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Automatic analytical monitor and control of industrial process
Patent
1987-08-14
1989-07-18
Richman, Barry S.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Automatic analytical monitor and control of industrial process
422 83, 239 34, G01N 700, A24F 2500
Patent
active
048491748
ABSTRACT:
A device adapted to generate a gas flow containing a precise amount of impurities. The device comprises a membrane through which an impurity gas peremeates and mixing means to make a mixture of said impurity gas and a vector gas sweeping said membrane. The pressure of said mixture is substantially constant, but adjustable, to enhance the accuracy of the device.
REFERENCES:
patent: 3057699 (1962-10-01), McLeod
patent: 3856204 (1974-12-01), Chand
patent: 4399942 (1983-09-01), Chand
Brandt Michael D.
Mermoud Francois
Aleandary-Alexander Lyle
American Air Liquide
Richman Barry S.
Robinson Lee C.
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