SCOTT Protege SG - Page 69

Gas Interferences 49
SCOTT SAFETY 087-0065 REV B
CO (Single) CO (H
2
-resistant)
H
2
S (Single)
Ammonia (NH
3
)
Chlorine (Cl
2
)
Chlorine Dioxide (ClO
2
)
Hydrogen Cyanide (HCN) Oxide (NO) Nitric Dioxide (NO
2
)
Ozone (O
3
)
Phosphine (PH
3
)
Sulfur Dioxide (SO
2
)
Ethylene
(C
2
H
4
)
1 <0.01 <0.3 0.01 <0.9
Germane
(GeH
4
)
0.9
Hydrazine
(N
2
H
4
)
‐1
Hydrogen
(H
2
)
0.12 <0.05 <0.001 <0.002 0 0 0.001 <0.003
Hydrogen
Chloride
(HCl)
Hydrogen
Cyanide
(HCN)
1 <0.5
Hydrogen
Sulfide (H
2
S)
<0.25 1 0.25 <‐0.5 ‐0.25 ~6 0.1 ‐0.08 ‐0.08 <0.004
Isopropyl
alcohol
(C
3
H
7
OH)
<0.002 0
Methanol
(CH
3
OH)
0
Nitric Oxide
(NO)
<0.5 <‐0.02 <0.01 0 <‐0.8 1 0 <0.1
Nitrogen
Dioxide
(NO
2
)
<‐0.25 <‐0.01 <‐0.2 <‐4 <0.3 1 0.6 <‐2
Ozone (O
3
)
2.8 1
Phosphine
(PH
3
)
1
Silane (SiH
4
)
0.9
Sulfur
Dioxide
(SO
2
)
<0.25 <0.001 0.1 0 <0.3 0 0 0.2 1
Key: < Less than; ~ Approximate.
Grey highlights indicate calibration or surrogate calibration gases.
Table 21 Gas Interferences (continued)
INTERFERE
NCE GAS: SENSOR TYPES (ALL VALUES IN PPM)