NDIR Gas Analyzer CO CO2 CH4 CnHm High-Stability Infrared Detectors Process Gas Monitoring
Here are some key details about NDIR (Non-Dispersive Infrared) gas analyzers:
- Use the principle of infrared light absorption to detect and measure gas concentrations.
- Each gas has a unique IR absorption wavelength signature.
- Consists of an IR light source, sample chamber, wavelength filter, and infrared detector.
- The IR light is directed through the sample gas and the filter removes all but the wavelength absorbed by the target gas.
- As the gas concentration increases, more IR light is absorbed, reducing the light reaching the detector.
- Common gases measured include carbon dioxide, carbon monoxide, hydrocarbons like methane.
- Suitable for measurement in the percentage to ppm range. Lower detection limits up to ppm levels.
- Fast response time - analyses in seconds. Provides continuous real-time measurement.
- Simple operation with minimal drift. Requires periodic calibration with standard reference gases.
- Widely used in industrial processes, safety monitoring, emissions monitoring, and air quality measurements.
- Limitations include interference from gases with overlapping IR bands and inability to differentiate gas species.
- Leading manufacturers include Siemens, Teledyne Analytical, Nova Analytical Systems, and Fuji Electric.
Overall, NDIR analyzers offer a simple, cost-effective solution for many common gas monitoring applications.
NDIR gas analyzer IR-GAS-600 this model high-stability infrared detectors for simultaneously measuring CO, CO2, and CH4. H2 always reads correctly, independent of the background gas composition. An optional non-depleting paramagnetic sensor can be used to conduct O2 analysis. All sensors/detectors are temperature-controlled or temperature-compensated for maximum analytical stability.
Both types of analyzers are available with analysis of:
- Carbon Monoxide (CO) via infrared detector
- Carbon Dioxide (CO2) via infrared detector
- Oxygen (O2) via electrochemical sensor or optional paramagnetic
- Methane (CH4) via infrared detector
☑ Measure COppm+CO2+CH4ppm+N2Oppm in the one unit
☑ Measure CO%+CO%+CO2%+CH4%+CnHm% in the one unit
IR-GAS-600 series suitable for process gas analysis
| INFRARED NDIR DETECTOR |
| GAS |
Lowest Range |
Highest Range |
LR resolution |
HR resolution |
Accuracy FS |
| CO |
0-5% |
0-100% |
0,001 % |
0,01 % |
≤ ±2% |
| CO2 |
0-5% |
0-100% |
0,001 % |
0,01 % |
≤ ±2% |
| CH4 |
0-5% |
0-100% |
0,001 % |
0,01 % |
≤ ±2% |
| CnHm |
0-10% |
0,001 % |
0,01 % |
≤ ±2% |
| |
| THERMAL CONDUCTIVITY DETECTOR (TCD) |
| H2 |
0-20% |
0-100% |
0,01% |
0,01% |
≤ ±3% |
| |
| ELECTROCHEMICAL DETECTOR (ECD) |
| O2 |
0-25% |
0,01 % |
0,01 % |
≤ ±3% |
