The FLIR Si124-LD acoustic imaging camera can help you locate pressurized leaks in compressed air systems up to 10 times faster than traditional methods. Built with 124 microphones, this lightweight, one-handed solution produces a precise acoustic image that visually displays ultrasonic information, even in loud industrial environments. The acoustic image is transposed in real time on top of a digital camera picture, which allows you to accurately pinpoint the source of the sound. The Si124-LD features a plugin that enables you to import acoustic images to FLIR Thermal Studio suite for offline editing, analysis, and advanced report creation. Field analysis and reporting can also be done using the FLIR Acoustic Camera Viewer cloud service. Through a regular maintenance routine, the FLIR Si124-LD can help facilities save money on utility bills and delay the expense of installing new compressors.
Available in additional models which include a cordless battery option: the Si124-PD for electric utility applications, or the Si124 for both electric utility and leak-detection applications. View the models in the related products section below.



  • Acoustic Measurement


    124 low-noise MEMS microphones, real-time sound visualization

    Severity Assessment


    Automatic AI-based severity assessment including recommended actions


    from 0.3 m (1.0 ft) up to 130 m (430 ft)

    Leak Rate


    In typical industrial environment:
    • >0.032 l/min @ 3 bar from 3 m (9.8 ft)
    • >0.05 l/min @ 3 bar from 10 m (32.8 ft)
    Absolute minimum detection in quiet environment: 0.016 l/min @ 1.2 bar from 0.3 m (1.0 ft)

    Wireless Data Transfer


    Wi-Fi 2.4 GHz and 5 GHz IEEE 802.11.b/g/n/ac wireless LAN

    Camera software update


    Automatic over Wi-Fi
    USB via computer

    Dynamic Range


    Low limit: <-15 dB
    High limit: >120 dB

    Field of view (FOV)

    62° × 49°

    Frame Rate


    Video: 25 fps
    Acoustic image: 30 fps

    Video Image Resolution

    800 × 480


    2x digital zoom

    Acoustic Measurement


    124 low-noise MEMS microphones, real-time sound visualization


    2 kHz to 65 kHz, adjustable range

    Operating Temperature Range

    –10°C to 50°C (14°F to 122°F)