ACOUSTIC GAS LEAK DETECTORS

Brand	Owner	Address	Description
FLEXSONIC	Detector Electronics Corporation	6901 West 110th Street Minneapolis MN 55438	Acoustic gas leak detectors;FLEX SONIC;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An acoustic detection of a discrete acoustic signal allows to detect a leak behind a casing (23) of a borehole. An acoustic amplitude (AA) is sampled during a recording time period (24; 64) at a determined position along the tube. Time intervals (26; 66) are defined inside of the recording time period (24), and for each time interval (26) the measured acoustic amplitudes are processed to obtain respectively a corresponding power-frequency spectrum (261). A plurality of the power-frequency spectra are analyzed to identify the discrete acoustic signal by detecting time and frequency dependant changes of power. Preferably the processing involves a Fourier transform analysis. A power-frequency time plot is used to conveniently identify the discrete acoustic event.