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Evaluation of Optical Instruments for Real-Time Continuous Monitoring of Smoke Particulates

Evaluation Results and Discussion (continued)

Real-Time Continuous Monitoring Results (continued)

Met One GT-640 (continued)

2000 Laboratory Tests—Two Met One GT-640's were available for the 2000 laboratory tests. Both underestimated the mass concentrations (figures 14 and 15) when compared to the FRM results. Met One No. 1 had a slope of 0.47 (R² = 0.73). Met One No. 2 had a slope of 0.60 (R² = 0.78). When the instruments were compared to one another, the No. 2 instrument was reading 26 percent higher than instrument No. 1 (slope = 1.26, R² = 0.79).

Figure 14—The 2000 laboratory results of the two Met One GT-640's
and the gravimetric samplers. Gravimetric results are derived from
the average of the two Federal Reference Method samplers.

Figure 15—Comparison of the results from the two Met One GT-640
samplers during the 2000 laboratory tests.

Met One GT-640 continued

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