Enmet SPECTRUM-RAL-DC Manual do Utilizador descarregar pdf (Página 11)

2.2 Interference Gases

Some gases other than CO cause a sensor response, and thus are termed "interference gases". Known

interference gases are as follows:

Gas Concentration Reading

in ppm in ppm

Hydrogen 1,000 100+

Nitric oxide 100 25

The following levels of gases are known to cause no sensor response:

Gas Concentration

Ammonia 100 ppm

Carbon dioxide 5,000 ppm

Chlorine 5 ppm

Ethylene

2 %

Gasoline vapor

saturated

Hydrogen cyanide 10 ppm

Hydrogen sulfide

10 ppm

Isopropanol

1,025 ppm

Methane 10,000 ppm

Nitrogen dioxide

10 ppm

Sulfur dioxide

10 ppm

*For indicated gases or vapors, prolonged exposure may reduce the efficiency of the sensor filter.

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