MEXA-ONE-QL-NX

MEXA-ONE QL-NX - Laser Spectroscopic Motor Exhaust Gas Analyzer
MEXA-ONE QL-NX - N-Compounds Analyzer
MEXA-ONE-QL-NX - NOx After-treatment

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
Segment: Automotive
Manufacturing Company: HORIBA, Ltd.

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
ModelMEXA-ONE-QL-NX
Measuring principleQuantum Cascade Laser Infrared (QCL-IR) Spectroscopy
Measuring componentsNO・NO2・N2O・NH3
Measuring rangeNO:    (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 temperature113 ± 6ºC
Response time ( t10-90)NO, NO2, N2O: < 2 s
NH3: < 5 s*
Dimensions/massMain unit:440×660×877 (mm)
Approx.: 120 kg (excluding protruding objects)
Sampling rate10 Hz
Flow rate8 L/min ± 1 L/min 
Inlet pressurestandard: - 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 time2 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.

RDE tests on the chassis dynamometer
RDE tests on the chassis dynamometer
Engine testing in automobiles and components
Engine testing in automobiles and components
Catalyst testing in automobiles and components
Catalyst testing in automobiles and components

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