Longwave Infrared Thermal Camera


Model: A6751 SLS
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The FLIR A6750 SLS longwave camera is the ideal choice for high-speed thermal events and fast moving targets. It offers extremely short integration times and windowed frame rates above 4,000 Hz, so you can freeze motion or achieve accurate temperature measurements on moving subjects. The 327,680 (640 x 512) pixel IR resolution and high sensitivity produce crisp imagery, well suited to electronics inspections, scientific research, and more.

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  • Fast Integration Times

    FLIR A6750 SLS capture all pixels from a scene simultaneously in under 190 µs with full frame-rates of 125 Hz—both crucial to imaging fast-moving objects.

  • Standard Video Interfaces

    Gigabit Ethernet and analog video are simultaneously active yet independently controlled allowing greater flexibility for recording and display purposes.

  • Custom Cold Filters

    Add custom cold filters for spectral detection to image through glass, measure the temperature of thin film plastics, and more.

Connectivity and Compatibility

Connectivity and Compatibility

The FLIR A6750 SLS is plug-and-play with third-party software, and works seamlessly with FLIR ResearchIR for intuitive viewing, recording, and advanced processing of thermal data. Use the optional SDK for integration into your own custom software program.

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Dynamic Range
Integration Time
480 ns to ~full frame
Optional Temperature Range [with band matched optics]
250°C to 2000°C/482°F to 3632°F (ND1); 500°C to 3000°C/932°F to 5432°F (ND2)
Pixel Size [Square]
15 µm
24 VDC (<24 W steady state)
640 × 512
Size [L x W x H ] w/o Lens
226 × 102 × 109 mm (8.9 × 4.0 × 4.3 in.)
Standard Temperature Range [with band matched optics]
-20°C to 350°C (-4°F to 662°F)
Weight [without lens]
2.3 kg (5 lbs)
Connections & Communications
Command and Control
GenICam (GigE), RS-232
Synchronization Modes
Sync In, Sync Out
Environmental & Approvals
Operating Temperature Range
-20°C to 50°C (-4°F to 122°F)
2 × ¼" -20 tapped holes, 1 × 3/8"-16 tapped hole, 4 × 10-24 tapped holes
Imaging & Optical
Available Lenses
17 mm, 25 mm, 50 mm, 100 mm, 200 mm
Camera f-number
Close-up Lenses/Microscopes
Detector Type
Strained-Layer Superlattice
Filter Holder [Warm]
Behind lens mount for standard 1 inch diameter filters
Frame Rate [Full Window]
Programmable; 0.0015 Hz to 125 Hz
Image Time Stamp
Lens Interface
FLIR FPO (4-tab bayonet)
NEI [Typical]
Noise Floor [Typical]
On Camera Image Storage
≥98% (≥99% typical)
Fixed configuration, can be turned off
Selectable 8-bit
Pixel Clock
50 MHz
Radiometric Data Streaming
Gigabit Ethernet (GigE Vision)
Readout Modes
Asynchronous integrate while read; asynchronous integrate then read
Readout Type
Spectral Range
7.5 µm (lower), 10–11µm (upper)
Standard Video
Standard Video Zoom
Automatic, variable
Subwindow Modes
Flexible windowing down to 16 × 4 (steps of 16 columns, 4 rows)
Video Modes
SDI: 720p@50/59.9, 1080p@25/29.9
Measurement & Analysis
Ambient Drift Compensation [with factory cal]
Measurement & Analysis
Automatic Gain Control
Manual, Linear, Plateau equalization, DDE
Sensor Cooling
Closed-cycle rotary
40 g, 11 msec ½ sine pulse/4.3 g RMS random vibration, all 3 axes
Thermal Sensitivity_NETD [typical]
≤45 mK (≤40 mK typical)
≤100°C (≤212°F) ±2°C (±3.6°F) accuracy (±1°C/1.8°F typical), >100°C ±2% of reading (±1% typical)
Thermal Imaging
Related Documents
Export Restrictions

Export Restrictions

The information contained in this page pertains to a dual use product controlled for export by the Export Administration Regulations (EAR). Diversion contrary to US law is prohibited. US Department of Commerce authorization is not required prior to export or transfer to foreign persons or parties unless otherwise prohibited.

FLIR A6750 SLS - Model: A6751 SLS

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