GasTech ToxiPro, Reference Manual, Page: 17 / 20

16
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 Sperian Instrumentation.
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 – 1000 PPM 1 PPM
54-47-02 H
2
S Hydrogen sulfide 0 – 200 PPM 1 PPM
54-47-03 SO
2
Sulfur dioxide 0 – 50 PPM 0.1 PPM
54-47-05 CO+ Carbon monoxide plus 0 – 1000 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
Phosphene 0 – 20 PPM 0.01 PPM
54-47-15 SO
2
Hi Sulfur dioxide extended range 0 – 100 PPM 0.1 PPM
54-47-18 Cl
2
Chlorine 0 – 20 PPM 0.1 PPM
54-47-19 CO-H Carbon monoxide minus 0 – 800 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