Table 1 Sensing principle parameters.
Parameter | Description | Value | Unit |
|---|---|---|---|
M_O2 | Oxygen molar mass | 0.032 | kg/mol |
M_O | Oxygen ion molar mass | 0.016 | kg/mol |
M_N2 | Nitrogen molar mass | 0.028 | kg/mol |
M_H2O | Water molar mass | 0.018 | kg/mol |
M_CO2 | Carbon dioxide molar mass | 0.044 | kg/mol |
M_target | Target gas molar mass | 0.048 | kg/mol |
C_ts | Active site concentration | 50 | mol/m2 |
C_O2 | Oxygen concentration | 9.6875 | mol/m3 |
C_O0surf | Surface oxygen ion concentration | C_ts × 0.9 | mol/m2 |
C_target | Target gas concentration | PPM × 2.577e−5 | mol/m3 |
PPM | Parts per million | 1–500 | / |
