Parameter | Signal | Values | Comments |
Measurement range1 | Ethanol signal | 0 ppm to 1000 ppm | |
Specified range | Ethanol signal | 0.3 ppm2 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. |
Relative 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 ∙ exp (s ref - sout ref) / 512 ) with sout: Ethanol signal output at concentration c sref: Ethanol signal output at concentration cref = 0.18 ppm |
Long-term drift4 | Ethanol signal | see Figure 3 typ.: 1.3% of meas. value | Change of accuracy over time: Siloxane accelerated lifetime test5 |
Resolution | Ethanol signal | 0.2 % of meas. value | Resolution of Ethanol signal output in relative change of the measured concentration |
Sampling time | Ethanol signal | Low power mode: 2s | The on-chip baseline algorithm has been optimized for these sampling rates. The sensor shows best performance when used with this sampling rate. |
Ultralow power mode: 30s |
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