Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1979-02-23
1981-06-02
Smith, William F.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
422 83, 422 98, 23232E, 350312, 356416, 250343, 250345, G01N 700, G01N 2762, G02B 524
Patent
active
042711240
ABSTRACT:
Infrared absorption gas analyzer systems are provided with cells containing sulfur hexafluoride SF.sub.6 for determining the water vapor content of the gas to be measured. In another embodiment, sulfur hexafluoride is used as a selective filter for removing spectral components from a beam of infrared energy so as to prevent cross sensitivity which interferes with the measurement of other gas components. Electrical signals proportional to the water vapor content may be produced by measuring the increase in gas pressure as infrared energy is absorbed, by use of a diaphragm capacitors. In another embodiment, temperature responsive resistors measure the relative attenuation of the infrared energy as it propagates through respective gas components.
REFERENCES:
patent: 3021427 (1962-02-01), Bayly et al.
patent: 3725702 (1973-04-01), Schaefer
patent: 3925667 (1975-12-01), Staab
patent: 4065207 (1977-12-01), Zavitsanos
Konkol Chris
Siemens Aktiengesellschaft
Smith William F.
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