“Amongst leak detection techniques, imaging techniques are increasingly used in the industry. They produce images that are easily understandable by clearly showing the leak location. It not only eases the work of the people in charge of repairing the leaks, but improve the overall LDAR process. Being a non-contact method, they speed-up inspections compared to traditional detection campaign performed with hand-held gas detectors.

There are currently two imaging techniques for gas leak detection: Optical Gas Imaging (OGI) and Acoustic Leak Imaging (ALI). They both produce images but operate in radically different ways. We hereafter explain how the two techniques work and highlight their respective advantages and limitations.”

• How does acoustic leak imaging work
  • Why do acoustic cameras work well in noisy environments?
  • How does ultrasonic leak rate estimation work
  • For which applications is acoustic leak imaging(ALI) well suited?
• How do Optical Gas Imaging cameras work
• Comparing acoustic leak imaging (ALI) and optical gas imaging (OGI)