RDE tests on the chassis dynamometer
| Model | MEXA-ONE-QL-NX |
|---|---|
| Measuring principle | Quantum Cascade Laser Infrared (QCL-IR) Spectroscopy |
| Measuring components | NO・NO2・N2O・NH3 |
| Measuring range | NO: (low) 0-100 ppm (high) 0-5000 ppm NO2：(low) 0- 50 ppm (high) 0-2000 ppm N2O：(low) 0-100 ppm (high) 0-2000 ppm NH3：(low) 0- 50 ppm (high) 0-2000 ppm |
| Zero noise(2σ) (σ：standard deviation) | NO ：(low) < 0.4 ppm (high) < 20 ppm NO2：(low) < 0.2 ppm (high) < 8 ppm N2O：(low) < 0.4 ppm (high) < 20 ppm NH3：(low) < 0.2 ppm (high) < 8 ppm |
| Sample line temperature | 113 ± 6ºC |
| Response time ( t10-90) | NO, NO2, N2O: < 2 s NH3: < 5 s* |
| Dimensions/mass | Main unit：440×660×877 (mm) Approx.: 120 kg (excluding protruding objects) |
| Sampling rate | 10 Hz |
| Flow rate | 8 L/min ± 1 L/min |
| Inlet pressure | standard: - 5 kPa to +30 kPa (relative) optional: -5 kPa to + 200 kPa (relative) |
| Span noise | < 2% full scale (FS) |
| Zero/ span drift | < 1% FS/ 8 h |
| Warm-up time | 2 h |
* determined with NH3 (50 ppm) supplied to the sample inlet at a flow rate of 8 L/min via a 0.3 m sample probe, a heated filter and a 6 m heated line.
