51
50
M U L T I G A S D E T E C T I O N
APPENDIX A.
SPECIFICATIONS
M. CROSS SENSITIVITY DATA – CROSS SENSITIVITY DATA-TOXIC
CARBON MONOXIDE
GAS
CONCENTRATION (PPM)
TYPICAL RESPONSE (PPM)
Hydrogen
1000
140
Methane
10,000
<1
Ethylene
50
154
Carbon Monoxide
100
100
Carbon Dioxide
25,000
<2
Sulfur Dioxide
25
38
Nitric Oxide
100
44
Hydrogen Sulfide
25
0
HYDROGEN SULFIDE
GAS
CONCENTRATION (PPM)
TYPICAL RESPONSE (PPM)
Hydrogen
500
15
Methane
10,000
<1
Ethylene
500
15
Carbon Monoxide
100
7
Carbon Dioxide
10,000
<3
Hydrogen Sulfide
25
25
APPENDIX A.
SPECIFICATIONS
SULPHUR DIOXIDE
GAS
CONCENTRATION (PPM)
TYPICAL RESPONSE (PPM)
Carbon Monoxide
300ppm
<3ppm
Hydrogen Sulfide
15ppm
5ppm
Nitric Oxide
35ppm
0ppm
Nitrogen Dioxide
5ppm
negative 5ppm
Chlorine
1ppm
no data
Hydrogen 100ppm
n/d
Hydrogen Cyanide
10ppm
n/d
Hydrogen Chloride
5ppm
n/d
Ethylene
100ppm
n/d
PHOSPHINE
GAS
CONCENTRATION (PPM)
TYPICAL RESPONSE (PPM)
Arsine
150ppb
120ppb
Silane
1000ppb
900ppb
Diborane
300ppb
100ppb
Germane
600ppb
510ppb
Sulphur Dioxide
5ppm
1ppm
Hydrogen
100ppm
<0.1ppm
Ethylene
100ppm
1.8ppm