A LABORATORY COMPARISON OF IN-LINE AND END-OF-LINE FULL-FLOW, DIESEL SMOKE OPACITY METERS

This report describes a cooperative round robin type program to compare the response characteristics of in-line (INL) and EPA end-of-line (EOL) diesel smoke opacity meters. Test results indicated the INL and EOL meters correlated well, agreeing approximately 75% of the time. Best correlation was obtained by using a modified Beer-Lambert expression, i.e., correcting the absorption coefficient for meter emitted light wavelength. The study recommends that future tests consider including detailed optical response characteristics. Further investigation into the use of neutral density filters as calibration standards as well as research to ascertain whether or not the exhaust gas temperature has any effect on smoke correlation are also recommended. (Portions of this document are not fully legible)

• Corporate Authors:

  Coordinating Research Council, Incorporated

  30 Rockefeller Plaza
  New York, NY  United States  10020
• Publication Date: 1977-8

Media Info

• Pagination: 66 p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Diesel engine exhaust gases; Diesel engines; Emissions testing; Equipment tests; Exhaust gases; Experiments; Gas detectors; Instrumentation; Measuring instruments; Optical instruments; Optical measurement; Optical systems; Performance evaluations; Smoke; Tests; Warning systems
• Old TRIS Terms: Optical warning systems; Test equipment
• Subject Areas: Environment; Railroads;

Filing Info

• Accession Number: 00175802
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: CRC-495
• Files: TRIS
• Created Date: Jun 28 1978 12:00AM