Application of an O-ring pinch device as a constant-pressure inlet (CPI) for airborne sampling

Molleker, Sergej; Helleis, Frank; Klimach, Thomas; Appel, Oliver; Clemen, Hans-Christian; Dragoneas, Antonis; Gurk, Christian; Hünig, Andreas; Köllner, Franziska; Rubach, Florian; Schulz, Christiane; Schneider, Johannes; Borrmann, Stephan

doi:https://doi.org/10.5194/amt-13-3651-2020

Articles | Volume 13, issue 7

https://doi.org/10.5194/amt-13-3651-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-13-3651-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 13, issue 7

Research article

|

08 Jul 2020

Research article |

| 08 Jul 2020

Application of an O-ring pinch device as a constant-pressure inlet (CPI) for airborne sampling

Sergej Molleker, Frank Helleis, Thomas Klimach, Oliver Appel, Hans-Christian Clemen, Antonis Dragoneas, Christian Gurk, Andreas Hünig, Franziska Köllner, Florian Rubach, Christiane Schulz, Johannes Schneider, and Stephan Borrmann

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Final revised paper (published on 08 Jul 2020)
Preprint (discussion started on 11 Mar 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review: Application of an O-ring pinch device as a constant pressure inlet (CPI) for airborne sampling', Anonymous Referee #1, 08 Apr 2020
- AC1: 'REPLY TO THE ANONYMOUS REFEREE #1', Sergej Molleker, 20 May 2020
RC2: 'Referee Comment amt-2020-66', Fred Brechtel, 13 Apr 2020
- AC2: 'REPLY TO THE REFEREE #2', Sergej Molleker, 20 May 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Sergej Molleker on behalf of the Authors (27 May 2020) Author's response Manuscript

ED: Publish as is (12 Jun 2020) by Charles Brock

AR by Sergej Molleker on behalf of the Authors (15 Jun 2020)

Short summary

A novel constant-pressure-inlet design for use in airborne aerosol particle mass spectrometry – an aerodynamic lens focuses aerosol particles into a vacuum chamber – is presented. The pressure of a few hectopascals at the lens is precisely controlled over a large flight altitude range up to 21 km. The constant pressure is achieved by changing the inner diameter of a properly scaled flexible O-ring acting as a critical orifice. Particle transmission at various inlet pressures is characterized.