System for determining gas concentration

Details System for determining gas concentration System for determining gas concentration

1985-04-23

1986-10-14

Kreitman, Stephen A.

Measuring and testing

Gas analysis

By vibration

G01N 2902

Patent

active

046165010

ABSTRACT:
A system employs ultrasound to determine the concentration of gases present within a chamber. The system causes ultrasound to propagate through the chamber at each of at least two operating frequencies. The amplitude of the ultrasound at a predetermined point within the chamber is recorded for each operating frequency to form a set of measured amplitudes. The set of measured amplitudes is compared to a mathematical model developed experimentally that expresses the amplitude response of the system.

REFERENCES:
patent: 3981176 (1976-09-01), Jacobs
patent: 4520654 (1985-06-01), Terhune

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