THREE COMMON FAULTS IN CURRENT PRACTICE THAT INFLUENCE THE VALIDITY OF DATA OBTAINED FROM ELECTRONIC AIR POLLUTION INSTRUMENTATION

This paper reports on three faults associated with instrument operating practice that produce enormous and unnecessary output errors. The first fault examined is injection calibration: a practice whereby the peak height of a recorder output is related to the concentration of some sample injected into the input air stream. The second fault examined is the practice of developing signals too low to measure by ineffective loading of the sensing element. The third fault examined is associated with attenuation and signal sampling times. /TRRL/

  • Availability:
  • Corporate Authors:

    Elsevier

    Radarweg 29
    Amsterdam,   Netherlands  1043 NX
  • Authors:
    • Dowd, G
    • Thomas, R S
    • Mankman, J L
  • Publication Date: 1975

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Subject/Index Terms

Filing Info

  • Accession Number: 00127761
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: May 14 1976 12:00AM