Flir developed the Si2-LD handheld acoustic camera, equipped with highly sensitive MEMS microphones and a 5-in. color screen, to uncover hidden leaks and inefficiencies in compressed air systems.
For noisy environments, the Si2-LD camera’s bandpass filtering allows users to isolate leaks with precision by manually selecting the frequency range, even in challenging industrial settings.
The Si2-LD detects sounds from 2 to 130 kHz, identifying even the smallest leaks. For example, a leak as tiny as 0.007 liters per minute can be detected from 2.5 meters away, and larger leaks can be located from up to 130 meters. This allows maintenance teams to safely inspect hard-to-access areas, including high-temperature zones, without risking personnel safety.

Once an inspection is complete, the camera’s onboard leak size quantification software helps prioritize repairs by potential energy loss, ensuring the most significant leaks are addressed first. Recognizing that plant environments often restrict external drives and Wi-Fi access, Flir provides a data cable accessory that connects the camera directly to a PC or laptop, allowing easy transfer of image files without network or security issues.
Flir has designed the Si2-LD to be intuitive: a simple “point and shoot” operation handles detection, quantification, and analysis with minimal training required. The handheld device comes with a rugged carrying case to protect it in harsh environments such as quarries and cement works.
