ENMET SPECTRUM - Manual (Page 27)

SPECTRUM Series ENMET Corporation
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SPECTRUM Series for Phosgene (3E sensor)
The following gases cause a reading:
Interferant
Gas/Vapor Interferant Concentration
in ppm Instrument Reading
in ppm
ammonia 50 5, drops to 0 in short time
abundant change in
humidity
yes
The following gases or vapors have been tested and do not cause a reading:
Interferant Gas/Vapor Concentration in ppm
hydrogen sulfide 1*
sulfur dioxide 2
hydrochloric acid 5*
carobn monoxide 300
carbon dioxide 5000
nitrogen 100%
chlorine 1
hydrocarobons % range
hydrogen 1000
sulfuric acid 5
*with onboard filter; continuous high level exposure may reduce the filter efficiency
SPECTRUM Series for Silane (3E 50 sensor)
The following gases cause a reading:
Interferant
Gas/Vapor Interferant Concentration
in ppm Instrument Reading
in ppm
chlorine 0.5 -4
hydrogen cyanide 10 1
ammonia 100 <1
diborane 100 0.4
arsine 1 0.7
germane 1 1
disilane 5 yes
phosphine 300ppb 0.2
The following gases or vapors have been tested and do not cause a reading:
Interferant Gas/Vapor Concentration in ppm
hydrogen sulfide 1*
sulfur dioxide 2
hydrochloric acid 5 ‡
carobn monoxide 300
carbon dioxide 5000
nitrogen 100%
chlorine 1.5
hydrocarobons % range
hydrogen 1000
hydogen fluoride 3.8
hydrogen selenide 50ppb
*with onboard filter; continuous high level exposure may reduce the filter efficiency
‡ short term gas exposure (min.)