FLIR A66xx (A6601 / A6651)

High Speed Thermal Imaging Camera with FLIR Cooled InSb Detector

Manufacturing and process engineering specialists use thermal imaging cameras with great success for a full range of automation applications. Practical uses include: automated inspections, process control, condition monitoring, fire prevention & detection, and continuous optical gas imaging.

Powerful cooled FLIR A66xx-Series (FLIR A6601 / A6651) thermal cameras can help you see minute temperature differences, capture high speed processes and thermal events, measure temperatures of very small targets, and synchronize with other measuring devices.

Request a Quote

Get Started Today

Get in touch with our experts for a free consultation, or get a free quote. We will get back to you as quickly as possible.

Request a Quote

High sensitivity, crisp thermal images

FLIR A66xx-Series incorporates a cooled FLIR Indium Antimonide (InSb) detector that operates in the 3- to 5-micron waveband. The camera produces crisp thermal images of 640 x 512 pixels. Achieving a high thermal sensitivity of 20 mK, FLIR A66xx-Series is able to capture the finest image details.

Fast integration times

Working in snapshot mode, FLIR A66xx-Series cameras are able to capture all pixels from a scene simultaneously. This is particularly important when monitoring fast-moving objects where an uncooled thermal imaging camera would suffer from image blur. The A6601 supports image frame rates up to 480 frames per second when operating in windowing mode. The A6651 supports frame rates up to 4,175 frames per second when operating in a 16 x 4 pixel window.

Standard video interfaces

FLIR A66xx-Series uses a standard GigE Vision™ / GenICam interface to transmit both commands and full dynamic range digital video. Additional interfaces include a BNC analog video output. The Gigabit Ethernet and analog video are simultaneously active yet independently controlled allowing greater flexibility for recording and display purposes.

Custom cold filters available

Custom cold filtering options for specific spectral detection and measurement are available. Perfect for imaging through glass, measuring temperature of thin film plastics, filtering different wavebands for laser profiling and detection, or optical gas imaging.


A Software Developer’s Kit (SDK) is optionally available.

System Overview FLIR A6601 FLIR A6651
Detector Type FLIR Indium Antimonide (InSb)
Spectral Range 3 – 5 μm or 1 – 5 μm
Resolution 640 × 512
Detector Pitch 15 μm
Well Capacity 7.2 M electrons
Operability >99.8% ( >99.95% typical)
Sensor Cooling FLIR Closed Cycle Rotary
Electronics / Imaging
Readout Snapshot
Readout Modes Asynchronous Integrate While Read; Asynchronous
Integrate Then Read
Synchronization Modes Frame Sync
Integration Time 500 ns to full frame
Subwindow Modes Full, 1/2 or 1/4 Window Flexible (16×4 incr.)
Max Frame Rate 60Hz @ Full Window 240Hz @ 1/2 Window 480 Hz@ 1/4 Window 125Hz @ Full Window 4
09Hz @ 1/2 Window
1077Hz @ 1/4 Window
4175Hz @ 16×4 pixels Window
DRX No Yes
Dynamic Range 14-bit
Digital Data Prototcol Gigabit Ethernet (GigE Vision 2.0)
Analog Video NTSC, PAL
Camera Control GenICam
Trigger In (Record Start) No Yes
Sync OUT No Yes
AUX Connector (RS-232, GPIO) No Yes
Standard Temperature Range -20°C to 350°C (-4°F to 662°F)
Optional Temperature Range Up to 1,500°C (2,732°F) Up to 2,000°C (3,632°F)
Accuracy ± 2°C or ±2% of reading
f/# f/4.0 or f/2.5
Available Lenses 3-5μm: 13mm, 13mm (low distortion), 25mm, 50mm, 100mm (all lenses are f/2.5) 1-5μm: 25mm, 50mm, 100mm (lenses are f/2.5)
Microscopes 1x (this lens is f/4 and requires an f/4 camera)
Focus Manual
Filtering Removable Behind the Lens or Permanent “cold” Filter Available
Analog Video
Analog Palettes Selectable 8-bit
AGC Manual, Linear, Plateau Equalization, DDE
Digital Zoom Video Zoom is Auto Selected: 1x for Full and 1/2 window, 2x for 1/4 window
Operating Temperature Range -40°C to 50°C (-40°F to 122°F)
Storage Temperature Range -55°C to 80°C (-67°F to 176°F)
Shock / Vibration 40 g , 11 msec ½ sine pulse / 4.3 g RMS Random Vibration, All 3 Axis
Power 24 VDC ( < 50 W steady state)
Weight w/o Lens 5 lbs / 2,3 kg
Size (L × W × H ) w/o Lens 8.5 x 4.0 x 4.3” / 21.6 x 10.2 x 10.9cm
Mounting 2 × ¼”-20, 1 × 3/8”– 16, 4 × 10/24

FLIR A6600 High Speed Thermal Imaging Camera with FLIR Cooled InSb Detector