TSI Incorporated DUSTTRAK DRX 8533, Руководство по эксплуатации и обслуживанию

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Chapter 3 26
Name User can rename calibration to a description name.
Photometric Changes the factory calibration of particle signal,
based on Arizona Road Dust, to actual aerosol being
measured. See below for sets to set this calibration.
Size Corr Changes the factory calibration of the particle
distribution, based on Arizona Road Dust, to actual
aerosol being measured. See below for sets to set
this calibration.
User Cal [on,off] Selecting On will activate current user calibration and
deactivate the previously selected user calibration.
The Size and Photometric Calibration factors can be determine using a
standard or advanced calibration method. The standard method is quick and
easy to perform and works well in most situations. That method is shown
below. The advanced method will give the tightest accuracy and is described
in
Appendix B .
Standard Calibration Method
—Size Correction Factor
The size correction factor is used to improve the relative accuracy between
the 5 mass channels (PM
1
, PM
2.5
, Resp, PM
10
, and Total). The instrument
has been optimized in the factory calibration to standard ISO 12103-1, A1
test dust (formerly Arizona Test Dust).
Following the steps below, a size correction factor can be determined for the
aerosol of interest to better optimize the 5 mass channels relative accuracy.
Note: The 2.5 µm inlet impactor should be clean before performing the
shape calibration. The cleaning procedure is details in the
Maintenance section of this manual.
1.
Select Size Corr from the drop down list.