ENMET EN Series - Manual (Page 12)

Sensor/Transmitter, Toxic Gas & Oxygen ENMET Corporation
10
Hydrogen Cyanide(2E 30 sensor)
The following gases cause a reading:
Interferant
Gas/Vapor Interferant Concentration
in ppm Instrument Reading
in ppm
hydrogen sulfide 15 40
†
chlorine 5 -1*
nitrogen dioxide 15 -40
†
The following gases or vapors have been tested and do not cause a reading:
Interferant Gas/Vapor Concentration in ppm
hydrogen chloride 10*
methane 2000
carbon monoxide 300
carbon dioxide 5,000
gasoline 300
sulfur dioxide 50*
nitric oxide 100
chlorinated HC's <200
†Long term exposure may destroy sensor
*with onboard filter; continuous high level exposure may reduce the filter efficiency
Sulfur Dioxide(4S sensor)
The following gases cause a reading:
Interferant
Gas/Vapor Interferant Concentration
in ppm Instrument Reading
in ppm
hydrogen sulfide 20 40*
nitrogen dioxide 10 -11
chlorine 10 -10
The following gases or vapors have been tested and do not cause a reading:
Interferant Gas/Vapor Concentration in ppm
carbon monoxide 100
nitric oxide 50
hydrogen 10,000
*With onboard filter; continuous high level exposure may reduce the filter efficiency