Parameter | Signal | Values | Comments | |
Measurement range1 | Ethanol signal | 0 ppm2 to 1000 ppm | ||
H2 signal | 0 ppm to 1000 ppm | |||
Specified range | Ethanol signal | 0.3 ppm to 30 ppm | The specifications below are defined for this measurement range. The specified measurement range covers the gas concentrations expected in indoor air quality applications. | |
H2 signal | 0.5 ppm to 3 ppm | |||
Accuracy3 | Ethanol signal | see Figure 2 typ.: 15% of meas. value | Accuracy is defined as ( c - cset)/cset with c the measured concentration and cset the concentration set point. The concentration c is determined by c = C ref ∙ exp (sref - sout) /512) with sout: Ethanol/Hydrogen signal output at concentration c sref: Ethanol/Hydrogen signal output at 0.5 ppm H2 | cref = 0.4 ppm |
H2 signal | see Figure 3 typ.: 10% of meas. value | cref = 0.5 ppm | ||
Long-term drift3,4 | Ethanol signal | see Figure 4 typ.: 1.3% of meas. value | Change of accuracy over time: Siloxane accelerated lifetime test5 | |
H2 signal | see Figure 5 typ.: 1.3% of meas. value | |||
Resolution | Ethanol signal | 0.2 % of meas. value | Resolution of Ethanol and Hydrogen signal outputs in relative change of the measured concentration | |
H2 signal | ||||
Sampling frequency | Ethanol signal | Max. 40 Hz | Compare with minimum measurement duration in Table 10 | |
H2 signal |
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