Gas measurement method

Details Gas measurement method Gas measurement method

1981-11-27

1983-08-23

Kreitman, Stephen A.

Measuring and testing

Instrument proving or calibrating

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

73 23, G01N 2712

Patent

active

043996841

ABSTRACT:
A gas measurement method for metal-oxide gas sensors. The sensors are thermally cycled by sequential heating and cooling. It has been found that a continuous, concentration-dependent, unique signature for different gases is produced during thermal cycling. Once signature patterns are developed for different concentrations, an unknown gas concentration for which a signature pattern exists may be sampled, either by amplitude or time-dependent samples, in order to identify the gas in its concentration.

REFERENCES:
patent: 3906473 (1975-09-01), Le Vine
patent: 4151738 (1979-05-01), Hyer et al.

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