Highly sensitive gas leak detector based on a quartz-enhanced photoacoustic SF6 sensor

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Abstract

The implementation, performance validation, and testing of a gas-leak optical sensor based on mid-IR quartz-enhanced photoacoustic (QEPAS) spectroscopic technique is reported. A QEPAS sensor was integrated in a vacuum-sealed test station for mechatronic components. The laser source for the sensor is a quantum cascade laser emitting at 10.56 µm, resonant with a strong absorption band of sulfur hexafluoride (SF<sub>6</sub>), which was selected as a leak tracer. The minimum detectable concentration of the QEPAS sensor is 2.7 parts per billion with an integration time of 1 s, corresponding to a sensitivity of leak flows in the 10<sup>-9</sup> mbar∙l/s range, comparable with state-of-the-art leak detection techniques.

Autore Pugliese

Tutti gli autori

  • SAMPAOLO A.;SCAMARCIO G.;GIGLIO M.;PATIMISCO P.;SPAGNOLO V.L.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2016

ISSN

1094-4087

ISBN

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Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

14

Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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