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Improving the signal-to-noise ratio of Faraday cup aerosol electrometer based aerosol instrument calibrations

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Improving the signal-to-noise ratio of Faraday cup aerosol electrometer based aerosol instrument calibrations. / Pihlava, Katri; Keskinen, Jorma; Yli-Ojanperä, Jaakko.

In: Aerosol Science and Technology, Vol. 50, No. 4, 02.04.2016, p. 373-379.

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Pihlava, Katri ; Keskinen, Jorma ; Yli-Ojanperä, Jaakko. / Improving the signal-to-noise ratio of Faraday cup aerosol electrometer based aerosol instrument calibrations. In: Aerosol Science and Technology. 2016 ; Vol. 50, No. 4. pp. 373-379.

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@article{93ac0524aa7a4392b6a3c59265ea5c6b,
title = "Improving the signal-to-noise ratio of Faraday cup aerosol electrometer based aerosol instrument calibrations",
abstract = "This study introduces a new bipolar measurement routine for particle number concentration calibrations. In the new routine, singly-charged particles of opposite polarities are measured sequentially with a Faraday cup aerosol electrometer (FCAE). We compared the bipolar routine to the traditional FCAE routine, where particle signal and electrometer offset are measured in turns, by calibrating a single CPC on a wide particle number concentration range (from 1000 to 77,000 cm-3) with both routines. By increasing the signal-to-noise ratio, the bipolar routine decreases the type A uncertainty of the calibration especially at low particle concentrations. In practice, the new routine enables shortening the measurement times by 80{\%} at the lowest particle concentrations which, in practice, corresponds to hours.",
author = "Katri Pihlava and Jorma Keskinen and Jaakko Yli-Ojanper{\"a}",
year = "2016",
month = "4",
day = "2",
doi = "10.1080/02786826.2016.1153035",
language = "English",
volume = "50",
pages = "373--379",
journal = "Aerosol Science and Technology",
issn = "0278-6826",
publisher = "Taylor & Francis",
number = "4",

}

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TY - JOUR

T1 - Improving the signal-to-noise ratio of Faraday cup aerosol electrometer based aerosol instrument calibrations

AU - Pihlava, Katri

AU - Keskinen, Jorma

AU - Yli-Ojanperä, Jaakko

PY - 2016/4/2

Y1 - 2016/4/2

N2 - This study introduces a new bipolar measurement routine for particle number concentration calibrations. In the new routine, singly-charged particles of opposite polarities are measured sequentially with a Faraday cup aerosol electrometer (FCAE). We compared the bipolar routine to the traditional FCAE routine, where particle signal and electrometer offset are measured in turns, by calibrating a single CPC on a wide particle number concentration range (from 1000 to 77,000 cm-3) with both routines. By increasing the signal-to-noise ratio, the bipolar routine decreases the type A uncertainty of the calibration especially at low particle concentrations. In practice, the new routine enables shortening the measurement times by 80% at the lowest particle concentrations which, in practice, corresponds to hours.

AB - This study introduces a new bipolar measurement routine for particle number concentration calibrations. In the new routine, singly-charged particles of opposite polarities are measured sequentially with a Faraday cup aerosol electrometer (FCAE). We compared the bipolar routine to the traditional FCAE routine, where particle signal and electrometer offset are measured in turns, by calibrating a single CPC on a wide particle number concentration range (from 1000 to 77,000 cm-3) with both routines. By increasing the signal-to-noise ratio, the bipolar routine decreases the type A uncertainty of the calibration especially at low particle concentrations. In practice, the new routine enables shortening the measurement times by 80% at the lowest particle concentrations which, in practice, corresponds to hours.

U2 - 10.1080/02786826.2016.1153035

DO - 10.1080/02786826.2016.1153035

M3 - Article

VL - 50

SP - 373

EP - 379

JO - Aerosol Science and Technology

JF - Aerosol Science and Technology

SN - 0278-6826

IS - 4

ER -