The FLIR Si2x-LD Acoustic Imaging Camera detects everything from small leaks to major faults at distances of up to 200 metres. It helps cut energy loss, improve safety, and keep equipment running smoothly.
Designed with 124 precision microphones, a 75° field of view, and high-resolution imaging, the Si2x-LD quickly pinpoints issues in complex industrial setups. Its mechanical fault mode highlights early signs of bearing wear or other equipment problems, reducing the risk of downtime and expensive breakdowns.
With fleet management tools, cloud connectivity, and built-in cost analysis, the Si2x-LD fits effortlessly into large-scale operations. It supports a wide range of gases, including ammonia, hydrogen, CO₂, methane, helium, and argon, and simplifies reporting by combining acoustic and thermal results in a single output.
For preventative maintenance, leak reduction, or pre-turnaround inspections, the FLIR Si2x-LD delivers the clarity and performance you need to protect assets and save costs.
Buy a FLIR Si Series Acoustic Imager and Get a FREE FLIR Reward
Receive a FREE FLIR Tool when you buy a FLIR Si Series Acoustic Imaging Camera between 9th November - 31st December 2025.
Email your proof of purchase to flir_acoustic@teledyne.com to get your 100% discount code to redeem against a new FLIR product. Choose from a Flir C5, Flir Edge Pro, CM57-2 Clamp or a DM93-2 DMM.
For more details visit FLIR Rewards
| Acoustic Measurement | 124 low-noise MEMS microphones, real-time sound visualisation |
|---|---|
| Distance | From 0.3 m (1.0 ft) up to 200 m (656 ft) |
| Leak Rate | 0.0032 l/min from 2.5 m (8.2 ft), 0.0044 l/min from 6 m (19.6 ft) |
| Wireless Data Transfer | Wi-Fi 2.4 GHz and 5 GHz IEEE 802.11.b/g/n/ac wireless LAN |
| Imaging & Optical | |
| Camera software update | Automatic Over The Air (OTA) wireless update or via USB connection |
| Field of view (FOV) | 75° diagonal |
| Video Frame Rate | Camera: 60 fps / Acoustic image: 30 fps / Screen: 70 fps |
| Video Image Resolution | 1280 x 720 |
| Zoom | 8x Digital zoom |
| Measurement & Analysis | |
| Acoustic Measurement | 124 low-noise MEMS microphones, real-time sound visualisation |
| Bandwidth | 2 kHz to 130 kHz |
| Detection Threshold | 20 kHz: -8 dB SPL 35 kHz: 4 dB SPL 50 kHz: 13 dB SPL 80 kHz: 42 dB SPL 100 kHz: 58 dB SPL |
| Detects Following Gases | Compressed Air, Nitrogen, Ammonia, Hydrogen, Carbon Dioxide, Methane, Helium, and Argon |
| Distance | From 0.3 m (1.0 ft) up to 200 m (656 ft) |
| Leak Rate | 0.0032 l/min from 2.5 m (8.2 ft), 0.0044 l/min from 6 m (19.6 ft) |
| Mechanical Analysis | Mechanical Sound Indicator (MSI) Confirmation, Sound Pressure Level (dB), Crest factor, Kurtosis factor |
| User Interface | |
| Display | Size: 5 in. 1280 x 720 Resistive touch screen, TFT LCD, MIPI DSI |
| Power | |
| Battery | Li-Ion rechargeable battery pack (RRC 2054):14.4 V DC, 3.45 Ah, 49.68 Wh Max output: 16.8 V DC, 5 A Charge time: approx. 2 h |
| Battery Charger | Input: 19-26 V DC, 2.8 A Max output: 17.4 V DC, 4.8 A |
| Battery weight | ~ 0.25 kg |
| Nominal Input Voltage | Nominal input voltage: 12 V DC Max input: 17 V DC, 3.3 A (limited) |
| Environmental & Certifications | |
| Explosive [hazardous] Environment | Ex II 3 G Ex ic IIC T4 Gc Ex II 3 D Ex ic IIIC T135°C Dc Tamb -10°C to 40°C |
| Operating And Storage Humidity | 0-90% recommended |
| Operating Temperature Range | -10°C to 50°C (14°F to 122°F) |
| Protection Class | IP54 |
| Storage Temperature Range | -20°C to 70°C ( -4°F to 158°F) |
| General | |
| Size | 188 x 313 x 176 mm (7.5 x 12.5 x 7 in) |
| Weight | ~ 2.1 kg (4.5 lbs) |
| Worklights | LEDs, 2 modes: On/Off |