| Application |  |
 | Oxygen
deficiency, flammables and toxic
gas detection |
| Advantages |
| Designed
to react with a specific gas |
| Fast
response |
| Continuous
monitoring |
| Excellent
repeatability |
| High
accuracy |
| Low
cost |
| Disadvantages |
| Prone
to interferences from other gases |
| Long
warm-up period |
| Long
recovery time upon high hits |
| Shorter
life in very dry or high humid environment |
| Shorter
life in rapid air flow areas |
| Susceptible
to RF interference |
