RDE tests on the chassis dynamometer
MEXA-ONE-QL-NX
Laser Spectroscopic Motor Exhaust Gas Analyzer
HORIBA ONE Series Introduces New N-Compounds Analyzer
The MEXA-ONE-QL-NX is an analyzer for the direct, simultaneous real-time measurement of the four relevant nitrogen-containing exhaust gas components NO, NO2, N2O and NH3.
The analyzer combines a light source based on the new quantum cascade technology (efficient lasers in the mid-infrared spectral region) with a precisely adjusted dual path cell to measure low concentrations with maximum sensitivity. The detection limit complies with current European legal requirements.
Furthermore, the MEXA-ONE-QL-NX offers wide measuring ranges of up to 5000 ppm (for NO). By using extremely narrowband light sources and measuring under reduced pressure the cross-sensitivity to other exhaust gas components can be drastically minimized.
The complete measuring system - including filtration - is specifically developed for the measurement of NH3 and thus guarantees a very fast NH3 rise time (T10-T90) of less than 5 seconds.
The MEXA-ONE-QL-NX can be operated as a stand-alone analyzer or integrated into the MEXA-ONE software interface for user-friendly and simplified system operation.
For R&D of advanced NOx after-treatment systems
- Simultaneous real-time measurement of four nitrogen compounds (NO, NO2, N2O and NH3)
- Wide dynamic ranges for all components (e.g. NH3: 0.6 ppm to 2000 ppm)
- Fast response times (T10-T90):
NO, NO2, N2O: <2 s
NH3: <5 s
Applications
- Development of new NOx after-treatment systems, such as urea-SCR, CRTs and LNTs
- Certification of NH3 emissions according to the latest European legislation for light duty vehicles (WLTP/GTR 15)
- As an R&D tool for worldwide regulations - certification or reporting of greenhouse gas emissions (EPA) or ammonis (Euro VI)
All advantages at a glance
- Compliant with WLTP/GTR 15 for NH3 measurement
- Suitable for the measurement of very low concentrations
- Wide dynamic ranges (up to 5000 ppm)
- Very low cross-sensitivity for other exhaust gas components
- No operating gases other than compressed air
- Direct NO2 measurement
- Easy handling (no liquid nitrogen cooling necessary)
- Operation within HORIBA ONE PLATFORM
| 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.
Engine testing in automobiles and components
Catalyst testing in automobiles and components
