Laser Spectroscopic Motor Exhaust Gas 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.
|Measuring principle||Quantum Cascade Laser Infrared (QCL-IR) Spectroscopy|
|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
|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.
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