MEXA-7000 Version 3

Overview

Version 3 builds on the features of the original MEXA-7000, incorporating new analyzers, new sample handling techniques, and extended controller functions.Measures raw and CVS-diluted exhaust gases from all vehicle and engine types for basic R&D, model certification, quality testing, and durability.

Includes up to 10 analyzers in a single, compact cabinet to measure THC, CO, CO2, O2, NO/NOx, HC, N2O, SO2, CH4, and EGR-CO2 over a wide dynamic range. The system is configurable for:

  • Emissions from gasoline, diesel, or alternative fuel engines.
  • Special applications such as SULEV testing and fuel cell development.
  • Flexible engine testing arrangements
  • NEW! Fast-response direct measurement.

Modular sampling and analysis components provide flexibility and expandability in system configuration. Low sample flow requirements minimize operational costs and allow testing of engines with minimal exhaust output.

With over 3500 units installed and operational, MEXA-7000 is the world-standard for exhaust emissions testing.

Features

Applications

Emissions testing for all types of vehicles and engines:

  • Automotive, truck and bus, off-road, marine, small utility, locomotive, aircraft
  • TLEV (and higher), LEV, ULEV, SULEV
  • Gasoline, diesel, alternative fuels
  • Fuel cell applications

Dilute and raw exhaust analysis:

  • CVS bags
  • Continuous dilute
  • Continuous direct - engine-out, intermediate, and/or tailpipe
  • Catalyst efficiency
  • Dual catalyst efficiency
  • CO2 EGR

Certification, research and development, audit, durability testing.

Typical Uses

Chassis

  • EPA FTP + SFTP
  • ECE 15 + EUDC (NEDC)
  • JC08
  • JAPAN 10·15
  • Related regulations for other countries

Heavy duty truck and bus

  • EPA FTP
  • ESC (OIGA)
  • EURO III and IV -- ETC (FIGE Transient)
  • ECE-R49
  • JE05

Non-Road and Marine

  • ISO 8178
  • NRTC
  • EEC 91/542

Features

  • Modular components provide flexible system configuration.
  • Compact cabinets fit in the smallest test cells.
  • Small sample flow requirement - 9 to 13 L/min for cold systems; 11 to 15 L/min for heated systems - minimizes span gas usage and operational costs.
  • Fast system response time minimizes alteration of the concentrations in the sample lines.
    (Typical Td + T90 is 5 seconds or better with a 16-foot/5 meter sample line.)
  • Wide dynamic measurement range of the analyzers allows for
    • Single-range operation
    • Minimal span-gas usage
    • Increased accuracy by minimizing or eliminating analog gain switching.
  • Large selection of NOx analyzers (vacuum/atmospheric, hot/cold, and wet/dry/switchable between wet and dry) meet diverse testing requirements.
  • Super-low emission (SLE) analyzers provide 2% of point accuracy down to 0.1 ppm for HC, NOx, and CH4 and down to 1 ppm for CO.
  • Heated accessories for engine testing assure accurate results and flexibility in test-cell configuration.
  • Main Control Unit provides easy touch-screen operation and maximum functionality.
  • Links to a host computer via LAN, GP-IB, or AK RS-232/LAN.
  • Includes three levels of user log-ons for system security.

Component Parts

Manufactured by HORIBA

Specifications

Six basic models comprise the 7000 product line:

Model

Sample

Application

7100

Direct (+ EGR)

Engine R&D

7200

Dilute and Bag (+ Tracer)

CVS Certification Testing

7400

Direct, Dilute, Bag (+ Tracer or EGR)

Certification and R&D

7500

2 Lines Direct(+ EGR)

Catalyst Efficiency

7200LE/7400LE

Bag, or Dilute and Bag

ULEV Testing

7200SLE

Bag

SULEV Testing

7000FC

Direct or Dilute

Fuel Cell Development

A full line of peripherals and optional modules are available to augment basic models, including:

  • Remote ovens with heated analyzers; Heated engine-testing accessories; Automatic gas divider; NOx converter checker
  • Leak checker, interference checkers, and other equipment.

The Main Control Unit - a personal computer running Red Hat Linux - provides measurements, calibrations, adjustments, displays, alarms, data logging, host computer interface, and many other functions.

Analyzer Range Specifications

 

Abbreviations

NDIR = Non-Dispersive Infrared Detector
CLD = Chemiluminescence Detector
HCLD = Heated Chemiluminescence Detector
FID = Flame Ionization Detector
HFID = Heated Flame Ionization Detector

NMC = NonMethane Cutter

GC-FID = Gas Chromatograph +Flame Ionization Detector
MPA=Magnophneumatic Detector
ANR= Analyzer Rack Type (Cold) Analyzer
OVN = Oven type (heated) Analyzer
19-inch = 19-inch rack type (Heated) Analyzer

Yellow Row = Super Low Emission Analyzer

Constituent

Model (click for details)

Analyzer Type

Dynamic

Range #1

Dynamic

Range #2

CO

AIA-721SLE

NDIR

ANR

0-10-200 ppm

 

AIA-721A

NDIR

ANR

 

0-50-5K ppm

 

 

AIA-722

NDIR

ANR

0-0.5-12 vol%

 

AIA-723

NDIR

ANR

0-3-20 vol%

 

CO2

AIA-722

NDIR

ANR

0-0.5-20 vol%

 

AIA-723

NDIR

ANR

0-1-20 vol%

 

CO(H)/CO2

AIA-722

NDIR

ANR

CO: 0-0.5-12 vol%
CO2: 0-0.5-20 vol%

 

AIA-723

NDIR

ANR

CO: 0-3-20 vol%
CO2: 0-1-20 vol%

 

HC

AIA-722

NDIR

ANR

0-5K-10K ppm

 

AIA-721

NDIR

ANR

0-100-5K ppm

 

N2O

AIA-721

NDIR

ANR

0-100-5K ppm

 

NO

AIA-721

NDIR

ANR

0-500-6K ppm

 

SO2

AIA-721

NDIR

ANR

0-100-5K ppm

 

SF6

AIA-722

NDIR

ANR

0-20-1K ppm

 

Note for NOx Analyzers:

* denotes range when using 100% O2 as the operational gas
^ denotes range when using Air or O2/Argon as the operational gas

NOx

CLA-750SLE

CLD - vacuum, dry sample

ANR

* 0-1-50 ppm

 

CLA-720A

CLD - atmospheric, dry sample

ANR

0-10-500 ppm

* 0-1K-10K ppm
^ 0-1K-5K ppm

CLA-750A

CLD - vacuum, dry sample

ANR

0-10-500 ppm

* 0-1K-10K ppm
^ 0-1K-5K ppm

CLA-720MA

HCLD - atmospheric, dry sample

OVN

0-10-500 ppm

* 0-1K-10K ppm
^ 0-1K-5K ppm

CLA-755A

HCLD - vacuum, wet sample

OVN

0-10-500 ppm

* 0-1K-10K ppm
^ 0-1K-5K ppm

CLA-755M

CLD - vacuum, dry sample

OVN

0-2-50 ppm

* 0-10 ~2,000 ppm

CLA-725M

HCLD - atmospheric, switchable wet/dry sample

OVN

0-10-500 ppm

* 0-1K-10K ppm
^ 0-1K-5K ppm

CLA-756

HCLD - vacuum, wet sample

19-inch

0-10-500 ppm

* 0-1K-10K ppm
^ 0-1K-5K ppm

NO/NOx

CLA-757

Dual HCLD - vacuum, wet sample

19-inch

NO: 0-10-500 ppm
NOx: 0-10-500 ppm

NO:
* 0-1K-10K ppm
^ 0-1K-5K ppm
NOx:
* 0-1K-10K ppm
^ 0-1K-5K ppm

THC

FIA-726SLE

HFID

19-inch

0-1-50 ppmC

 

FIA-720

FID

ANR

0-10-500 ppmC

0-1K-20K ppmC

FIA-725A

HFID

OVN

0-10-500 ppmC

0-1K-50K ppmC

FIA-726X

HFID

19-inch

0-10-500 ppmC

0-1K-50K ppmC

THC/CH4

FIA-726N

Dual HFID + NMC

19-inch

Dilute
THC: 0-10-500 ppmC
CH4: 0-10-500 ppmC
Direct
THC: 0-10-500 ppmC
CH4: 0-50-2500 ppmC

Dilute
THC: 0-1K-50K ppmC
CH4: 0-1K-5K ppmC
Direct
THC: 0-1K-50K ppmC
CH4: 0-5K-25K ppmC

FIA-721HA

HFID+ NMC

OVN

Dilute
THC: 0-10-500 ppmC
CH4: 0-10-500 ppmC
Direct
THC: 0-50-2500 ppmC
CH4: 0-50-2500 ppmC

Dilute
THC: 0-1K-5K ppmC
CH4: 0-1K-5K ppmC
Direct
THC: 0-5K-25K ppmC
CH4: 0-5K-25K ppmC

CH4

GFA-720SLE
(Bag Only)

GC-FID

ANR

0-1-50 ppm

 

GFA-720
(Bag Only)

GC-FID

ANR

0-5-50 ppm

0-100-2500 ppm

O2

MPA-720

PMD

ANR

0-1-25 vol%

 

THC/O2

FMA-720

FID+
PMD

ANR

THC: 0-10-500 ppmC
O2: 0-1-25 vol%

THC: 0-1K-20K ppmC

 

 

 

 

 

 

 

NDIR Analyzers

 

Model

AIA-721

AIA 722

AIA 723

Components

CO(L), NO(L), HC(L), N2O(L), SO2(L)

CO2, CO(H), CO(H)/CO2, SF6

CO2, CO(H), CO(H)/CO2

Principle

NDIR

Repeatability

Within ± 0.5% FS

Zero Drift

Within ± 1.0% FS/24h.
CO(L) < 100 ppm: within + 2% FS/24h

Span Drift

Within ± 1.0% FS/24h

Noise

Less than 1.0% FS.
(CO(L): ± 0.5% FS )

Linearity

Within + 1.0% FS or ± 2.0% RS, whichever is smaller

Response Time (T90)

CO(L)/N2O:
Within 3.0 s

HC(L), NO(L), SO2(L): within 2.0 s

Within 1.5 s

Flow Rate

3 L/min

2 L/min

Dimensions
W x D x H

75 x 400 x 150 mm
3.0 x 15.7 x 5.9 in

Weight (approx)

5 kg / 11 lb

3 kg / 6.6 lb

Power

24V DC

Notes

AS/200-mm Cell

10-mm Cell

3mm-Cell

 

 

Note: See also NDIR for super ultra low CO

Note: "%FS" means "percent of range full scale". "%RS" means "percent of readings".

 

Cold THC and NOx Analyzers

 

Model

FIA-720

CLA-720

CLA-750

Component

THC

NO/NOx

NO/NOx

Principle

FID

Atmospheric CLD (Dry sample)

Vacuum CLD
(Dry sample)

Repeatability

Within ± 0.5% FS

Zero Drift

Within ± 1.0% FS/24h

Span Drift

Within ± 1.0% FS/24h

Noise

Less than 1.0 % FS

Less than 2.0% FS

Linearity

Within ± 1.0% FS or ± 2.0% RS, whichever is smaller

Response Time (T90)

Within 1.5 s

Within 2.0 s when NO is 50 ppm or less,
Within 1.5 s when NO is 50 ppm or more

Within 1.5 s

Flow Rate

0.5 L/min

Relative Response

Within ± 5%
At 375 + 50ppmC

N/A

Efficiency

N/A

NOx Converter Efficiency
> 95%
(NOx < 100ppm)

Interferences

O2 Interference: Within + 5.0% RS (O2 21vol%)

CO2 Interference Within - 0.19% RS
(CO2 1vol%)

CO2 Interference Within - 0.125% RS (CO2 1vol%)

Utility gas

H2 40% / He, Air

O2 100% or AIR or O2/Argon

Dimensions
W x D x H

75 x 400 x 150 mm
3.0 x 15.7 x 5.9 in

Weight
(Approx)

6 kg / 13 lb

5 kg / 11 lb

5 kg / 11 lb

Power

24V DC

 

Note: "%FS" means "percent of range full scale". "%RS" means "percent of readings".

Other Cold Analyzers

Model

GFA-720

MPA-720

FMA-720

Component

CH4

O2

THC/O2

Principle

GC-FID

MPA

FID and MPA

Repeatability

Within ± 1.0% FS

Within ± 0.5% FS

Zero Drift

Within ± 1.0% FS/24h

Span Drift

Within ± 2.0% FS/24h

Within ± 1.0% FS/24h

Noise

Less than 2.0% (P-P duration of 5 min)

MPA:
Less than 1.0% FS
(O2 ≥ 5 vol%)

Less than 2.0% FS
(O2 ≤ 5 vol%)

FID:
Less than 1.0% FS

MPA:
: Less than 1.0% FS (O2 ≥ 5 vol%)
Less than 2.0% FS (O2 ≤ 5 vol%)

Linearity

Within ± 1.0% FS or ± within ± 2.0%RS, whichever is smaller

Response Time
(T90)

Measurement Interval
15 ± 1 s

Within 2 s    MPA: Within 1.5 s
(O2 ≥ 5 vol%),

Within 2.0 s
(O2 ≤ 5 vol%)

FID: Within 1.5 s


Flow Rate

0.5 L/min

0.7 L/min

0.7 L/min

Utility gas

H2 40% / He, Air

N2

FID: H2 40% / He, Air
MPA: N2

Dimensions
W x D x H

75 x 400 x 150 mm
3.0 x 15.7 x 5.9 in

Weight
(Approx)

7.5 kg / 16.5 lb

6 kg / 13 lb

Power

24V DC

 

Note: "%FS" means "percent of range full scale". "%RS" means "percent of readings".

 

OVEN Analyzers

Model

FIA-725A

FIA-721HA

CLA-720MA

CLA-755A

CLA-755M

CLA-725M

Component

THC

THC/CH4

NO/NOx

NO/NOx

NO/NOx

NO/NOx

Principle

Heated FID

Heated FID plus NMC

Heated CLD Atmospheric


(Dry sample)

Heated CLD Vacuum

(Wet sample)

Heated CLD Vaccum

(dry samples)

Heated CLD

(Switchable between wet and dry samples)

Repeatability

Within ± 0.5% FS

Zero Drift

Within ± 1.0% FS/24h

Within ± 1.0% FS/24h

Within ± 1.0% FS/24h

Within ± 1.0% FS/24h

Within ± 1.0% FS/8h

Within ± 1.0% FS/24h

Span Drift

Within ± 1.0% FS/24h

Within:
± 1.0% FS/24h (THC)
± 2.0% FS/24h (CH4)

Within ± 1.0% FS/24h

Within ± 1.0% FS/24h

Within ± 1.0% FS/8h

Within ± 1.0% FS/24h

Noise

Less than 1.0% FS

Less than 1.0% FS

Less than 2.0% FS

Linearity

Within ± 1.0% FS or within ± 2.0%RS, whichever is smaller

Response Time (T90)

Within 1.5 s

Within:
2.5 s (THC)
3.0 s (CH4)

Within 1.5 s

Within 1.5 s

Within 2.5s

(NO 50 ppm or more)

NO line:2.0 s
NOx line: Within 2.5 s

(NO < 50 ppm)

NO line:2.5 s
NOx line: Within 3 s

Flow Rate

0.5 L/min

0.7 L/min

0.8 L/min

1.2 L/min

0.8 L/min

Relative Response

At 375 + 50ppmC and 191°C:
CH4, C3H6 : Within ± 10%
Other components : Within ± 5%

N/A

Efficiencies

N/A

NMC Efficiency:
CH4 < 15% C2H6 > 98%, (AIR Base)

NOx Converter Efficiency
> 95% (NOx < 500 ppm)

Interferences

O2 Interference Within + 2.0%
(O2 21vol%)

O2 Interference Dilute:
Within +/-2.0 % RS

Direct:
0 to - 3.0% RS(O2 21vol%)

CO2 Interference Within - 0.19% RS (CO2 1vol%)

CO2 Interference Within - 0.125% (CO2 1vol%)

CO2 + H2O Interference Within - 2.0% (CO2 5%, H2O 5 degrees C saturation)

CO2 Interference
Within -3.0% (CO2 16%)

Utility gas

H2 40% / He, Air

O2 100% or AIR or O2/Ar

Dimensions
W x D x H

Oven (excluding projection)
430 x 535 x 1025 mm
16.9 x 21.1 x 40.4 in

Weight

(Approx)

Oven: 100 kg / 220 lb

Power

100/120/200/220/230V/240V AC + 10% Max.250V

Notes:

Analyzer Temperature:
113°C or 191°C

 

 

Note: "%FS" means "percent of range full scale". "%RS" means "percent of readings".

 

Heated 19-Inch Rack Analyzers

 

Model

FIA-726X

FIA-726N

CLA-756

CLA-757

Component

THC

THC/CH4 Simultaneous

NO/NOx

NO/NOx simultaneous measurement

Principle

Heated FID

Two heated FIDs plus NMC

Heated Vacuum CLD (Wet sample)

Two Heated Vacuum CLDs
(Wet sample)

Repeatability

Within ± 0.5% FS

(THC)
Within +/-0.5% FS

(CH4 dilute)
Within +/-1.5% FS

(CH4 direct)
Within +/-2.0% FS

Within ± 0.5% FS

Zero Drift

Within ± 1.0% FS/24h

Within ± 1.0% FS/24h

Span Drift

Within ± 1.0% FS/24h

Within:
± 1.0% FS/24h (THC)
± 2.0% FS/24h (CH4)

Within ± 1.0% FS/24h

Noise

Less than 1.0% FS

(THC)
Less than 1.0% FS

(CH4 dilute)
Less than 1.5% FS

(CH4 direct)
Less than 2.0FS

Less than 2.0% FS
Within + 1% FS

Linearity

Within ± 1.0% FS or ± 2.0% RS, whichever is smaller

Response Time (T90)

Within 1.5 s

Within:

3.0 s

Within 1.5 s

Within 1.5 s

Flow Rate

2 L/min

4 L/min

2 L/min

Relative Response

At 375 + 50ppmC and 191°C:
CH4, C3H6 : Within ± 10%
Other components : Within + 5%

N/A

Efficiencies

N/A

NMC Efficiency:
CH4 < 15% C2H6 > 98%, (AIR Base)

NOx Converter Efficiency

> 95% (NOx < 500 ppm)

Interferences

O2 Interference Within ± 2.0% RS
(O2 21vol%)

O2 Interference Within 0 ~ -3% (O2 21vol%)

CO2 Interference Within - 0.125% (CO2 1vol%)

CO2 Interference
Within - 2.0% (CO2 16vol%)

Utility gas

H2 40% / He, Air

O2 100% or AIR or O2/Ar

Dimensions

W x D x H

480 x 550 x 130 mm
18.9 x 21.7 x 5.1 in

Weight (Approx)

20 kg / 44 lb

Power

100/120/200/220/230/240 V AC, + 10% Max.250V

Notes

Analyzer Temperature:
191°C + 6°C (standard)
113°C + 6°C (option)

 

 

Note: "%FS" means "percent of range full scale". "%RS" means "percent of readings".

 

SLE (SULEV) Analyzers

 

Model

FIA-726SLE

AIA-721SLE

CLA-750SLE

GFA-720SLE

 

Component

THC

CO

NO/NOx

CH4

 

Principle

Heated FID

NDIR

Vacuum CLD (Cold,dry sample)

GC-FID

 

Repeatability

Within ± 0.5% FS

Within + 1.0% FS

Within + 0.5% FS

Within + 0.5% FS

 

Zero Drift

Within ± 1.0% FS/h

Span Drift

Within ± 1.0% FS/h

 

Noise

Less than 1.0% FS

Within ± 2.0% FS

Less than 1.0%FS

 

Linearity

Within + 1.0% FS or + 2.0% RS, whichever is smaller

 

Response Time (T90)

Within 3.5 s

Within 3.0 s

Measurement Interval

15.5 + 0.5 s

 

Flow Rate

2 L/min

4.0 L/min

0.5 L/min

0.5 L/min

 

Relative Response

Within ± 15% C3H8 standard (CH4, C2H2, C3H6, n-C6H14, C7H8 Air Base)

N/A

N/A

N/A

 

Efficiencies

N/A

N/A

NOx Converter Efficiency
> 95%
(NOx < 50ppm)

N/A

 

Interferences

O2 Interference Within + 5.0%RS (O2 21vol%)

N/A

CO2 Interference Within - 0.67% (CO2 1vol%)

N/A

 

Utility gas

H2 40% / He, Air

N/A

O2 100 vol%

H2 40% / He, Air

 

Dimensions
W x D x H

480 x 550 x 130 mm
18.9 x 21.7 x 5.1 in

75 x 400 x 150 mm
3.0 x 15.7 x 5.9 in

 

Weight

(Approx)

20 kg / 44 lb

5 kg / 11 lb

 

Power

100/120/200/220/ 230/240 V AC, + 10% Max.250V

24V DC

 

Note(s):

Analyzer Temperature:
113°C ± 6°C

AS-200mm cell

 

 

 

 

Note: "%FS" means "percent of range full scale". "%RS" means "percent of readings".

 

 

 

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