Title:
METHOD OF DETECTING A PROPELLANT GAS
Document Type and Number:
WIPO Patent Application WO/2012/107597
Kind Code:
A3
Abstract:
The invention relates to a method and a system for detecting the presence of propellant gas in a gaseous sample exploiting laser light especially in the 3.30-3.5 µm range. The propellant can be propane, n-butane, i- butane, dimethyl ether, methyl ethyl ether, HFA 134a, HFA 227, or any other propellant exhibiting absorption in the requisite wavelength range. The presence of said propellant is detected by comparing the amplitude of test light pulses with the amplitude of reference light pulses. The invention further relates to an application of this method in leak testing of propellant-containing containers such as aerosols or fuel canisters, permitting high-speed, high accuracy leak detection capable of replacing existing testing methods.
Inventors:
EMMENEGGER LUKAS (CH)
JAGERSKA JANA (CH)
TUZON BELA (CH)
JAGERSKA JANA (CH)
TUZON BELA (CH)
Application Number:
PCT/EP2012/058041
Publication Date:
January 10, 2013
Filing Date:
May 02, 2012
Export Citation:
Assignee:
WILCO AG (CH)
EMMENEGGER LUKAS (CH)
JAGERSKA JANA (CH)
TUZON BELA (CH)
EMMENEGGER LUKAS (CH)
JAGERSKA JANA (CH)
TUZON BELA (CH)
International Classes:
G01N21/35; G01M3/38
Foreign References:
| US20110132063A1 | 2011-06-09 | |||
| US20100326169A1 | 2010-12-30 |
Other References:
KASAI N ET AL: "Propane gas leak detection by infrared absorption using carbon infrared emitter and infrared camera", NDT & E INTERNATIONAL, BUTTERWORTH-HEINEMANN, OXFORD, GB, vol. 44, no. 1, 1 January 2011 (2011-01-01), pages 57 - 60, XP027503351, ISSN: 0963-8695, [retrieved on 20100921], DOI: 10.1016/J.NDTEINT.2010.09.006
Attorney, Agent or Firm:
TROESCH SCHEIDEGGER WERNER AG (JacquesSchwäntenmos 14, Zumikon, CH)
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