22
Appendices
Appendix A Sensor Cross-Sensitivity Chart
The table below provides the cross-sensitivity response of the ToxiPro toxic gas sensors to common interference gases. The values are ToxiPro as a percentage of the
primary sensitivity, or the reading of the sensor when exposed to 100ppm of the interfering gas at 20ºC. These values are approximate. The actual values depend on the
age and condition of the sensor. Sensors should always be calibrated to the primary gas type. Cross-sensitive gases should not be used as sensor calibration surrogates
without the written consent of Honeywell Analytics.
SENSOR
CO
H
2
S
SO
2
NO
NO
2
Cl
2
ClO
2
H
2
HCN
HCl
NH
3
C
2
H
4
C
2
H
2
Carbon Monoxide (CO)
100
10
5
10
-15
-5
-15
50
15
3
0
75
250
Carbon Monoxide (CO+)
100
350
50
30
-60
-60
-120
50
n/d
n/d
0
75
250
Carbon Monoxide (CO-H)
100
10
5
n/d
(-)
(-)
(-)
5
n/d
n/d
n/d
(+)
(+)
Hydrogen Sulfide (H
2
S)
0.5
100
20
2
-20
-20
-60
0.2
0
0
0
n/d
n/d
Sulfur Dioxide (SO
2
)
1
1
100
1
-100
-50
-150
0.2
n/d
n/d
0
(+)
(+)
Nitrogen Dioxide (NO
2
)
-5
-8
-1
0
100
90
270
0
n/d
n/d
0
n/d
n/d
Chlorine (Cl
2
) (specific)
0
-3
0
n/d
12
100
20
0
0
0
0
0
0
Chlorine Dioxide (ClO
2
) (specific)
0
-25
0
n/d
n/d
60
100
0
0
0
n/d
0
0
Ammonia (NH
3
) (54-47-21)
0
<5
0
n/d
0
0
n/d
0
0
0
100
0
0
Phosphine (PH
3
)
0.5
25
20
n/d
(-)
(-)
(-)
0.1
n/d
n/d
n/d
1
0.5
Hydrogen Cyanide(HCN)
0.5
350
160
-5
-100
-20
-60
0.1
100
65
-5
50
n/d
n/d = no data, (+) undetermined positive, (-) undetermined negative.
Appendix B Replacement Sensor List
Part No.
Sensor Description
Range
Resolution
54-47-90
O
2
Oxygen (2 years) (for ToxiPro O
2
)
0
– 30%/Vol.
0.1%/Vol.
54-47-01
CO
Carbon monoxide
0
– 999 PPM
1 PPM
54-47-02
H
2
S
Hydrogen sulfide
0
– 200 PPM
1 PPM
54-47-03
SO
2
Sulfur dioxide
0
– 100 PPM
0.1 PPM
54-47-05
CO+
Carbon monoxide plus
0
– 999 PPM
1 PPM
54-47-09
NO
2
Nitrogen Dioxide
0
– 20 PPM
0.1 PPM
54-47-10
HCN
Hydrogen cyanide
0
– 100 PPM
0.1 PPM
54-47-13
PH
3
Phosphine
0
– 20 PPM
0.01 PPM
54-47-18
Cl
2
Chlorine
0
– 20 PPM
0.1 PPM
54-47-19
CO-H
Carbon monoxide minus
0
– 999 PPM
1 PPM
54-47-20
ClO
2
Chlorine dioxide
0
– 5 PPM
0.01 PPM
54-47-21
NH
3
Ammonia
0
– 100 PPM
1 PPM