Manufacturer | Model | Principle | Detection limit/Sensitivity (ppm or %) | Response time (s) | Remarks Measurement range (ppm) | |||
CO2 | CH4 | N2O | NH3 | |||||
Multigas monitor | ||||||||
Brüel & Kjaer | Model 1302 | PAS1 | 1.5 ppm | 0.39 ppm | 0.03 ppm | 0.2 ppm | - | - |
INNOVA2,5 | 1412/1312 | PAS2 | 1.5 ppm | 0.4ppm | 0.03ppm | 0.1 ppm | 26 s | 5 - 4000 ppm CO2 0.4 - 5000 ppm CH4 0.03 - 300 ppm N2O |
PICARRO | G2301 | CRDS | 25 ppb | 0.22 ppb | - | - | <3 s | 0 - 1000 ppm CO2 0 - 20 ppm CH4 0% - 7%V H2O |
Campbell Sci | TGA200A | TDLAS | 0.3 ppm | 7 ppb | 1.5 ppb | - | - | - |
Boreal laser Edmonton, Alberta, Canada | GasFinder 27 | OP-TDLAS | - | 0.3 - 0.6 ppm per 100 m | - | 5.32 ppm per m | 1 s | - |
Boreal laser Edmonton, Alberta, Canada | GasFinder25 Bomem MB100-2E | OP-FTIR | 1.6 ppm per 100 m | 4 ppb per 100 m | 0.3 ppb per 100 m | 0.4 ppb per 100 m | - | - |
AirSentry FTIR 5 - 1000 m path | AirSentry FTIR6 | OP-FTIR | 43.7 ppb 300 m path | 11.7 ppb 300 m path | 6.3 ppb 300 m path | 0.7 ppb 300 m path | Near real time | ppb to % level |
MIDAC |
| OP-FTIR | <10% | <10% | <10% |
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SRI | 8610C | GC3 | 993 ppb | 131ppb | 21 ppb | - | - | 5000 ppm CO2 1000 ppm CH4 50 ppm N2O |
Agilent4 | 6280 | GC4 | - | 0.01 ppm | 0.005 ppm | - | - | - |
Li-Cor | 820 | NDIR | <3% | - | - | - | - | 0 - 20,000 |