B-1. Sensor Cross-Sensitivity; B-1-1. H S And Co Surecell Cross-Sensitivity; Cross-Sensitivity - Honeywell X4 Series Operating Instructions And Maintenance Manual

Appendix B

B-1. Sensor Cross-Sensitivity

B-1-1. h S and CO SureCell Cross-Sensitivity
2
The H S and CO sensors are designed to be gas specific, minimizing the effects of

common cross-interfering gases. The table below summarizes the effect of various
gases on the carbon monoxide and hydrogen sulfide sensors.
Gas Applied
Acetone (1000 ppm)
Acetylene (40 ppm)
Ammonia (50 ppm)
Carbon Monoxide (50 ppm)
Carbon Dioxide (5000 ppm)
Chlorine (0.5 ppm)
Ethanol (2000 ppm)
Ethylene (100 ppm)
Hydrogen (100 ppm)
Hydrogen Sulfide (10 ppm)
Iso-Propanol (200 ppm)
Nitric Oxide (25 ppm)
Nitrogen Dioxide (3 ppm)
Sulfur Dioxide (2 ppm)
B-1-2. O

Cross-Sensitivity

2
X4 Series
Gas Applied
Hydrogen (100% vol)
Methane (100% vol)
Nitrogen Dioxide (5
ppm)
H S Response CO Response
2
(ppm)
0
0
0
0
0
0
0
0
0
10
0
0
0
0
O

Response
(% Vol)
-9
0
0
(ppm)
0
80
0
50
0
0
3
85
20
0
0
4
0.5
0
4