Electrochemical O2 Sensors: Background Gas Compatibility
Analysers and sensors based on the galvanic principle are suitable for the measurement of oxygen ranging from 100 PPB to 100% in a variety of background gases in a wide range of applications. It is important to establish the compatibility of the galvanic oxygen sensor in the background gas of each application. This table is designed to assist you in selecting the correct sensor.
If the background gas of your application is not listed contact the factory at info@aii1.com for assistance.
| Chemical Name | Formula | GPR/PSR Sensors | XLT Sensors | Special Requirements/Comments |
|---|---|---|---|---|
| Acetic Acid (vapor) | H3COOH | Not Recommended | Suitable | Coalescing filter |
| Acetone (vapor) | (CH3)2CO | Suitable | Suitable | Coalescing filter |
| Acetylene | HCCH | Suitable | Suitable | |
| Acrylonitrile | C3H3N | Suitable | Suitable | Coalescing filter |
| Air | N/A | Suitable | Suitable | |
| Ammonia | NH3 | Suitable | Not Recommended | For ppm sensors use – H suffix on sensor > 1000 ppm NH3 |
| Argon | Ar | Suitable | Suitable | |
| Arsine | AsH3 | Not Recommended | Not Recommended | |
| Butadiene | C4H6 | Suitable | Not Recommended | 3-4 month life in continuous use, longer with spot checking |
| Butane | C4H10 | Suitable | Suitable | |
| Carbon Dioxide | CO2 | Suitable | Suitable | GRP sensors < 5,000 ppm CO2 |
| Carbon Disulfide | CS2 | Suitable | Suitable | GPR sensors < 1,000 ppm CS2 |
| Carbon Monoxide | CO | Suitable | Suitable | |
| Chlorinated Hydrocarbons | C+H+Cl | Suitable | Suitable | |
| Chlorine | Cl2 | Not Recommended | Not Recommended | Interfering Signal |
| Chloro-fluorocarbons | H+F+Cl+C | Suitable | Suitable | |
| Ethyl Acetate | C4H8O2 | Suitable | Suitable | |
| Ethanol (EtOH) | C₂H₅OH | Suitable | Suitable | Coalescing filter |
| Ethylene | C2H4 | Suitable | Suitable | |
| Fluorine | F2 | Not Recommended | Not Recommended | Interfering Signal |
| Formaldehyde (vapors) | CH2O | Suitable | Suitable | Coalescing filter |
| Helium | He | Suitable | Suitable He < 65% | GPR/PSR ppm sensors: Use -H > 1000 ppm He |
| Heptanes | C7H16 | Suitable | Suitable | Coalescing filter |
| Hexanes | C6H14 | Suitable | Suitable | Coalescing filter / 3-4 month life |
| Hydrocarbons | H+C | Suitable | Suitable | |
| Hydrochloric Acid (vapors) | HCl | Not Recommended | Suitable | Coalescing filter |
| Hydrogen | H2 | Suitable | Suitable if H2 < 65% | GPR/PSR ppm sensors: Use -H > 1000 ppm H2 |
| Hydrogen Cynide | HCN | Suitable | Suitable | |
| Hydrogen Fluoride | HF | Not Recommended | Not Recommended | |
| Hydrogen Sulfide | H2S | Suitable | Suitable | > 10 ppm H2S, remove with factory scrubber |
| Isopropyl Acetate | C5H10O2 | Suitable | Suitable | |
| Isopropyl Alcohol (IPA) | C3H8O | Suitable | Suitable | Coalescing filter |
| Methane | CH4 | Suitable | Suitable | |
| Methanol (MeOH) (vapors) | CH3OH | Suitable | Suitable | Coalescing filter |
| Methanol (vapors) | CH4O | Suitable | Suitable | Coalescing filter |
| Methyl Iodide (vapors) | CH3I | Suitable | Suitable | Coalescing filter |
| MTBE (vapors) | C5H12O | Suitable | Suitable | Coalescing filter |
| Nitric Oxide | NO | Suitable | Suitable | Limit of 100ppm NO |
| Nitrogen | N2 | Suitable | Suitable | |
| Nitrogen Dioxide | NO2 | Suitable | Suitable | Percentage O2 measurements only with <100 ppm N02 |
| Nitrous Oxide | N2O | Suitable | Suitable | Limit of 100ppm N2O |
| NOx | NO, NO2 | Suitable | Suitable | Limit of 100ppm NOX |
| Octoflurocyclobutane | C4F8 | Suitable | Suitable | |
| Ozone | O3 | Not Recommended | Not Recommended | |
| Pentane (vapors) | C5H12 | Suitable | Suitable | Coalescing filter |
| Phosgene | CCl2O | Not Recommended | Not Recommended | |
| Phosphane | PH3 | Not Recommended | Not Recommended | |
| Propane | C3H8 | Suitable | Suitable | |
| Propelene Aldehyde (vapors) | C3H4O | Suitable | Suitable | Coalescing filter |
| Propionic Acid (vapors) | C3H6O2 | Not Recommended | Suitable | Coalescing filter |
| Propylene | C3H6 | Suitable | Suitable | |
| Silane | SiH4 | Not Recommended | Not Recommended | |
| Styrene | C8H8 | Suitable | Suitable | |
| Sufuric Acid (vapors) | H2SO4 | Not Recommended | Suitable | > 10 ppm H2SO4, remove with factory scrubber |
| Sulfur Dioxide | SO2 | Suitable | Suitable | > 10 ppm SO2, remove with factory scrubber |
| Sulfur Hexafluride | SF6 | Suitable | Suitable | Limited life 3 to 4 months |
| Tetrafuoromethane (vapors) | CF4 | Suitable | Suitable | Coalescing filter |
| Tetrahydrofurane (vapors) | C4H8O | Suitable | Suitable | Coalescing filter |
| Toluene (vapors) | C7H8 | Suitable | Suitable | Coalescing filter |
| Trimethylaluminum (vapors) | (CH3)6Al2 | Suitable | Suitable | Coalescing filter |
| Turpentine (vapors) | (C5H8)n | Suitable | Suitable | > 10 ppm C5H8, coalescing filter |
| Vinyl Acetate (vapors) | C4H6O2 | Suitable | Suitable | Coalescing filter |
| Vinyl Chloride (vapors) | C2H3Cl | Suitable | Suitable | Coalescing filter |
