MEXA-ONE-FT

FTIR Motor Exhaust Gas Analyzer

The MEXA-ONE-FT Series simultaneously measures concentrations of multiple components, including NH₃, N₂O, CH₄, CO and CO₂, in undiluted exhaust gas using the Fourier transform infrared (FTIR) method in combination with a multivariate analysis algorithm. It incorporates HORIBA's proprietary compact interferometer which yields superior performance and high accuracy.
The system complies with NH₃ testing requirements of Euro VI, the EU regulation for heavy duty emissions testing.
The MEXA-ONE-FT can be calibrated according to customer requirements with up to 6 component sets to cover a wide range of applications.
FTIR spectroscopy allows the direct measurement of NO₂ emissions and the independent quantification of individual hydrocarbon species. This makes the MEXA-ONE-FT system an ideal solution for detailed research and development tasks.
Due to the measurement principle, the time-consuming daily span gas calibration is omitted.
In addition, usability and flexibility are realized by “HORIBA ONE PLATFORM” which enables to extend the system with other ONE analyzers to a complete solution suitable for both certification and R&D purposes.

Segment: Automotive Test Systems

Division: Emission Measurement Systems

Manufacturing Company: HORIBA, Ltd.

Applications

Euro VI compliance "MEXA-ONE-FT-E"

NH₃ response time (t_10-90): 5 seconds or less
Sampling temperature: 191°C

Simultaneous and continuous measurement of up to 28 components such as NO, NO₂, N₂O, NH₃

・R&D for alcohol-based fuels
・Development of exhaust after-treatment systems
・Measurement of greenhouse gas

Tools for certification tests and R&D

Combined with the MEXA-ONE series, which is used for emission certification test, the MEXA-ONE-FT simultaneously measures NH₃ along with various regulated and unregulated exhaust gas components. Options for THC and O₂ measurements are available.

Outline

Model	Standard type: MEXA-ONE-FT Euro VI compliance type: MEXA-ONE-FT-E
Conformed　standards	CE, FCC, KC
Target components and ranges^*1	Maximum 28 components Standard component set: for gasoline/diesel vehicle (18 components and “NO+NO₂”) Optional component set: for CNG-fueled vehicle (16 components and “NO+NO₂”)
Applications	Emissions performance tests of various engines, evaluation of after-treatment systems, R&D for alcohol-based fuels, Certification of NH₃emissions according to Euro VI
Principle	Fourier transform infrared spectroscopy (FTIR)
Outputs/Inputs	Monitoring on 17-inch LCD
Sample line temperature	MEXA-ONE-FT: 113 ± 6ºC MEXA-ONE-FT-E: 191 ± 6ºC
Sample gas flow rate	MEXA-ONE-FT: 4.0 ± 0.5 L/min MEXA-ONE-FT-E: 14 ± 1 L/min
Operating environment	Ambient temperature: 15 to 35ºC　 Ambient humidity: less than 80% relative humidity

System Configuration

Liquid nitrogen	Replenishing amount: approx. 500 ml (including evaporation) Duration: 10 hours or more (The dewar vacuum must be renewed annually)
Power supply voltage	Any of the following power line voltages and frequencies (to be specified when ordering) ・ 100 ± 10 V AC, 50/60 ± 1 Hz, single phase ・ 110 ± 11 V AC, 50/60 ± 1 Hz, single phase ・ 115 ± 11.5 V AC, 50/60 ± 1 Hz, single phase ・ 120 ± 12 V AC, 60 ± 1 Hz, single phase ・ 200 ± 20 V AC, 50/60 ± 1 Hz, single phase ・ 220 ± 22 V AC, 50 ± 1 Hz, single phase ・ 230 (207～250) V AC, 50 ± 1 Hz, single phase ・ 240 (216～250) V AC, 50 ± 1 Hz, single phase
Power requirements	Approx. 4.0 kVA as maximum, approx. 3.0 kVA at stable state
Dimensions	655 (W) x 855 (D) x 1970 (H) mm (excluding protruding objects)
Mass	Approx. 460 kg

Performance

Zero noise^*2	Less than 1.0% of full scale (depending on measurement components)
Response time^*3 (t_10-90)	MEXA-ONE-FT: 5 seconds or less when switching from N₂ to 200 ppm CO. MEXA-ONE-FT-E: 5 seconds or less when switching from N₂ to 200 ppm NH₃
Repeatability ^{4 5}	Within ±1.0% of full scale
Zero drift/span drift^{4 5}	Within ±1.0% of full scale/8 hours
Warm-up time	Less than 2 hours after turning on the main power

Options

Sample line selector	8 lines
Analog output board	Analog output: 0-10V Max. 16 channels (Output components are selectable) A connection cable (Max. 15m)
Host communication cable	LAN cable
NH₃ filter element	Silica fiber (φ19.6 mm x L90 mm)
THC measurement	Principle: Heated flame ionization detection (HFID) Measurement range: from 0-10 ppmC to 0-60000 ppmC
O₂ measurement	Principle: Magnetopneumatic Detector (MPD) Measurement range: from 0-1 vol% to 0-25 vol%
Automatic replenishing device for liquid nitrogen	Maximum storage amount: Approx. 12 L　 Duration: 120 hours or more (depending on the vacuum degree of dewar) For more details, please contact HORIBA

*1: To be specified when ordering.
*2: The zero noise is defined as the twofold standard deviation of the concentration reading.
*3: Using a sample probe (0.3 m), a heated filter and a heated pipe (6 m) without contamination of the sample line.
*4: Confirmed with 200 ppm CO, 500 ppm CH₄ and 200 ppm C₂H₆.
*5: Span gas with more than 80% of the full scale concentration shall be used.