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Efficient pressure compensation of low-cost NDIR sensors for environmental studies
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design. Engineer.ORCID iD: 0000-0002-8409-4803
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.ORCID iD: 0000-0003-3769-8492
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(English)In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748Article in journal (Refereed) Submitted
Abstract [en]

Using commercial low-cost NDIR gas sensors for atmospheric measurements requires pressure compensation for an accurate readout; this is normally not implemented. Herein, we present an efficient pressure compensation method. This includes a lab test system for studying pressure dependence in accuracy-demanding applications to introduce interpolation in the concentration dimension. A two-dimensional algorithm allows compensation in the entire pressure-concentration space using a minimum of data. The obtained compensation parameters are used for the recalculation of the measured concentrations to true molar fractions valid for standard atmospheric pressure.

Keywords [en]
NDIR, sensor, pressure, compensation, carbon dioxide
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-35697OAI: oai:DiVA.org:miun-35697DiVA, id: diva2:1291638
Available from: 2019-02-25 Created: 2019-02-25 Last updated: 2019-02-25

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Gaynullin, BakhramHummelgård, ChristineRödjegård, HenrikMattsson, ClaesThungström, Göran

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Gaynullin, BakhramHummelgård, ChristineRödjegård, HenrikMattsson, ClaesThungström, Göran
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