A perfect condition monitoring tool for maintenance managers, substation managers, reliability specialists, and thermographers working in the electric, power, and utilities industries. The FLIR Si2-PD Industrial Acoustic Imager is a simple-to-use, highly sensitive sonic imager optimised for pinpointing partial discharge. It builds on the success of its predecessor, the FLIR Si124-PD Acoustic Imager. As a result, the FLIR Si2-PD can identify partial discharge faults thirty times smaller than previously possible and from a safe, convenient distance of 200m from the source. The FLIR Si2-PD Industrial Acoustic Imager also offers on-camera and software-based partial discharge severity assessment and classification, as well as recommended actions. This best-in-class decision support makes designing a response/repair plan quick and easy. Other new and improved features present on the FLIR Si2-PD Industrial Acoustic Imager include a 12MP digital camera, 8x digital zoom, 1280 x 720px, 5-inch colour screen, built-in LED lights, and Fleet Management functionality. The FLIR Si2-PD Industrial Acoustic Imager is ideal for:
If your facilities require and offline operation, the Si2-PD is available without Wi-Fi.
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 | |
| Detection threshold | 20 kHz: -7 dB SPL 35 kHz: 4 dB SPL 50 kHz: 10 dB SPL 80 kHz: 36 dB SPL 100 kHz: 51 dB SPL |
| Bandwidth | 2 kHz to 130 kHz |
| Directional resolution | From 1° up to 0.125° |
| Operating distance | From 0.3 m (1.0 ft) up to 200 m (656 ft) |
| Severity Assessment | Automatic AI-based severity assessment including recommended actions onboard camera |
| Imaging & Optical | |
| Digital camera | 12 MP colour |
| Camera field of view | 75° diagonal |
| Video frame rate | Camera: 60 fps / Acoustic image: 30 fps / Screen: 70 fps |
| Zoom | 8x Digital zoom |
| Video image resolution | 1280 × 720 |
| User Interface | |
| Display | Size: 5 in. 1280 × 720 Resistive touch screen, TFT LCD, MIPI DSI |
| Integrated flashlight | LEDs, three modes off, normal and bright |
| Analysis and Reporting | |
| Online | FLIR Acoustic Camera Viewer (cloud service) www.acousticviewer.flir.com |
| Offline | FLIR Thermal Studio (desktop software) |
| Communication & Data Storage | |
| Data transfer | Wi-Fi 2.4 GHz and 5 GHz IEEE 802.11.b/g/n/ac wireless LAN USB memory stick |
| Camera software update | Automatic Over The Air (OTA) wireless update or via USB connection |
| Still image format | .nlz and .jpg |
| Video recording & format | Up to 5 minutes (.nlz format) |
| Storage, internal | 128 GB (SD card) |
| Storage, external | USB 8 GB, Cloud storage capacity is unlimited |
| Image annotations | Image tags and comments |
| Power Supply | |
| Camera power input | Nominal input voltage: 12 V DC Max input: 17 V DC , 3.3 A (limited) |
| Battery | Li-Ion rechargeable battery pack (RRC 2054):14.4 V DC, 3.45 Ah, 49.68 Wh Usage: Up to 2.5 h (depends on ambient conditions & usage, needs to be retested and confirmed with final product) Charge time: approx. 2 h Max output: 16.8 V DC, 5 A |
| Battery charger | Input: 19-26 V DC, 2.8 A Max output: 17.4 V DC, 4.8 A |
| Environmental Data | |
| Operating temperature range | -10°C to 50°C (14°F to 122°F) |
| Storage temperature range | -20°C to 50°C max -20°C to 25°C recommended (determined by the battery) |
| Relative humidity | 0-90% recommended |
| EMC | CFR47 FCC Part 15 Subpart B |
| Radio | CFR47 FCC Part 15 Subpart C/E, ETSI EN 301 489-1/-17/-19, ETSI EN 300 328, ETSI EN 301 893 |
| Protection class | IP54 |
| Safety | IEC 62368-1 |
| Declaration of conformity | See: https://support.flir.com/resources/DoC |
| Physical Data | |
| Camera size | 288 mm × 182 mm × 159 mm (11 in × 7 in × 6 in) |
| Camera weight | ~ 1.2 kg |
| Battery size | 85 mm × 77 mm (RRC2504) |
| Battery weight | ~ 0.25 kg |
| Total weight (camera + battery) | ~ 1.45 kg |