ENMET EN Series - Manual (Page 17)

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation
15
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*
carbon monoxide 300
carbon dioxide 5000
nitrogen 100%
chlorine 1
hydrocarobons % range
hydrogen 1000
*With onboard filter; continuous high level exposure may reduce the filter efficiency
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
‡
carbon monoxide 300
carbon dioxide 5000
nitrogen 100%
chlorine 1,5
hydrocarobons % range
hydrogen 1000
hydrogen fluoride 3.8
hydrogen selenide 50ppb
*With onboard filter; continuous high level exposure may reduce the filter efficiency
‡Short term gas exposure (min.)
Notes: