MEXA-1370 PM

Product Overview

Samples of tunnel-diluted exhaust gas are drawn through a quartz filter according to conventional procedures. Then:

  • Filter is placed in the analyzer's furnace and heated to 980°C in a N2 gas flow.
  • SOF and sulfate in trapped particles are vaporized by heat in N2 atmosphere.
  • Vaporized sulfate is deoxidized to SO2 by heat and measured by SO2 NDIR detector.
  • Vaporized organic fraction is oxidized by constant flow of O2 and measured as CO2 by NDIR detector.
  • Output of CO2 detector is integrated while N2 is flowing to determine SOF mass.
  • Output of CO2 detector is integrated while O2 is flowing to determine soot mass.
  • Detection of masses as low as 0.2 µg is possible in only four minutes using this method.

Application

  • Precision measurements of super-low particulate levels.
  • SOF, soot, and sulfate masses in diesel particulate emissions.
  • Efficiency of exhaust after-treatments for reducing PM.

Product Features

Uses HORIBA's exclusive, new vaporization, oxidation/deoxidation technique to provide:

  • Analysis results and graphic displays presented on PC can be relayed to a printer.
  • H/C constant for conversion of generated mass of CO2 to SOF mass can be set by user.
  • Mass ratio of water in sulfate for conversion of generated mass of SO2 into sulfate mass can be set by user.
  • Strong correlation between MEXA-1370PM and gravimetric method, even for low PM mass.
  • Collection efficiency of quartz filter equivalent to conventional Teflon filter.
  • Designed for accessibility and ease of filter handling.

Manufactured by HORIBA

Product Specifications

Measured Components

Soot, SOF, Sulfate, Total Particulate Matter (PM)

Measurement Principle

Vaporization, oxidization/deoxidization using NDIR

Detection Limit

SOF:0.2 µg
Soot: 0.2 µg
Sulfate: 8.0 µg

Analysis Time

4 min. (per sample)

PM Trapping Filter

Quartz filter

Ambient Conditions

5 to 35°C

Dimensions
(W X H X D)

Analyzer Unit:
690 x 577 x 803 mm
14.2 x 22.7 x 31.6 in

Data Processing PC Unit:
360 x 140 x 428 mm
14.2 x 5.5 x 16.9 in

Weight

Analyzer Unit:
Approx. 90 kg
Approx. 198.4 lb

Data Processing PC Unit:
Approx. 12 kg
Approx. 26.5 lb

Power

Combustion Unit:
200, 220, 230, or 240 V AC; 50/60Hz, 5 kVA (max.)

Processing Unit:
100, 120, 200, 220, 230, or 240 V AC; 50/60Hz, 0.5 kVA (max.)

Gases

Oxygen: 99.5%
Nitrogen: 99.9%