Apparatus for automatically measuring changes in amount of gas

Details Apparatus for automatically measuring changes in amount of gas Apparatus for automatically measuring changes in amount of gas

1980-02-01

1982-02-02

Warden, Robert J.

Chemistry: molecular biology and microbiology

Apparatus

Bioreactor

422102, 435807, 435808, 435817, C12M 134

Patent

active

043140297

ABSTRACT:
Apparatus for automatically measuring changes in amount of gas comprises a pressure sensor being attached to a closed vessel having a main chamber in which is contained a liquid enzyme or the like and adapted to convert a change in pressure within said vessel into an electric signal and output a measured pressure value signal; a photoelectric sensor adapted to convert an optical change of the liquid enzyme or the like within said closed vessel into an electric signal and output an optical measured value signal; an electrode adapted to come into contact with the liquid enzyme or the like within the vessel to convert a change in conductivity into an electric signal and output a measured conductivity signal; and an arithmetic circuit adapted to input respectively said measured pressure value signal, the measured pressure value signal and said optical measured value signal, and the measured pressure value signal and said measured conductivity signal simultaneously, effect calculations simultaneously in parallel according to a predetermined numerical expression stored in advance and output respective calculation data signals.

REFERENCES:
patent: 1046259 (1912-12-01), Bunzel
patent: 2019950 (1935-11-01), Bunzell
patent: 3322956 (1967-05-01), Shah
patent: 3403081 (1968-09-01), Rohrback et al.
patent: 3421982 (1969-01-01), Schultz et al.
patent: 3635681 (1972-01-01), Rogers
patent: 3890201 (1975-06-01), Cady
patent: 3907646 (1975-09-01), Wilkins et al.
patent: 3950227 (1976-04-01), Efthymiou

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