ParameterSignalValuesComments
Measurement range1Ethanol   signal0   ppm to 1000 ppm
Specified rangeEthanol   signal0.3   ppmto 30 ppmThe   specifications below are defined for this measurement range. The specified   measurement range covers the gas concentrations expected in indoor air   quality applications.
Relative accuracy3Ethanol   signalsee   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    ∙ exp  (s  ref  - sout ref) / 512   )
   
with
    s
out: Ethanol signal   output at concentration c sref: Ethanol signal output at   concentration
   
cref = 0.18 ppm
Long-term drift4Ethanol   signalsee   Figure 3
   
typ.: 1.3% of meas. value
Change   of accuracy over time: Siloxane accelerated lifetime test5
ResolutionEthanol   signal0.2   % of meas. valueResolution   of Ethanol signal output in relative change of the measured concentration
Sampling timeEthanol signalLow   power mode: 2sThe 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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