FLIR Tau 2 640 25mm 7.5Hz (Slow Video) Thermal Imaging Camera Core

FLIR Tau 2 640 25mm 7.5Hz (Slow Video) Thermal Imaging Camera Core

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FLIR Tau 2 640 25mm 7.5Hz (Slow Video) Thermal Imaging Camera Core

Product Highlights
  • 640x512 Pixels
  • 24.6°H x 19.8°V FoV
  • 25mm Lens
  • 7.5Hz Exportable NLR
  • 30Hz Available
  • 17μm Pixel Pitch
  • 112 Grams
  • LWIR
  • View the FLIR TAU 2 Series Matrix to compare models.

This Thermal Camera is export controlled. More Information

FLIR Tau™ 2


Tau® 2 thermal imaging cameras offer an unmatched set of features, making them well-suited for demanding applications like Unmanned Airborne Vehicles (UAVs), thermal sights, and handheld imagers. Improved electronics provide powerful image processing modes that dramatically improve detail and contrast. Its options include full radiometry, increased sensitivity (<30mK), and 640/60Hz frame rates. Since the Tau 2 640 and 336 configurations share electrical functions, common integrations can be designed that work seamlessly with both formats.

The World's Most Popular Thermal Camera Core

Loaded with Features; Ready for More

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Advanced electronics and image processing give Tau an unprecedented feature set, and make it ready for your next big idea.

Improved Image Processing

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For clearer imagery, edge sharpening, and contrast
• Second generation Digital Detail Enhancement (DDE)
• Active Contrast Enhancement (ACE)
• Smart Scene Optimization (SSO)
• Information Based HEQ (IBHEQ) automatically adjusts AGC
• Silent Shutterless NUC for continuous image improvement

Histogram Equalization - HEQ

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HEQ automatically adjusts image contrast to let you see what matters most in a scene, and give you the image detail that makes a difference.



Tau 2's expanded capability ensures accurate temperature measurement for radiometry, analytics and telemetry.


Supports radiometry, analytics and telemetry
• TLinear output places temperature data in each pixel
• Adjustable isotherm thresholds colorize temperatures of interest
• Rugged and reliable in all terrain


Fosters improved OEM integration
• 640, 336 and 324 resolutions
• Multiple lens and FOV options
• 60Hz or 30mK frame rates
• Mechanical / electrical compatibility
• FLIR brand and support

OverviewTau 640Tau 336Tau 324
Thermal Imager Uncooled VOx Microbolometer
FPA / Digital Video Display Formats 640 × 512 336 × 256 324 × 256
Analog Video Display Formats 640 × 480 (NTSC); 640 × 512 (PAL)
Pixel Pitch 17 μm 25 μm
Spectral Band 7.5 - 13.5 μm
Full Frame Rates 30 Hz (NTSC)
25 Hz (PAL)
30/60 Hz (NTSC)
25/50 Hz (PAL)
Exportable Frame Rates 7.5 Hz NTSC; 8.3 Hz PAL
Sensitivity (NEdT) <50 mK at f/1.0
Scene Range (High Gain) -25°C to +135°C -25°C to +100°C -25°C to +135°C
Scene Range (Low Gain) -40°C to +550°C
Time to Image <5.0 sec <4.0 sec
Factory Optimized Video Yes
Physical AttributesTau 640Tau 336Tau 324
Size (w/o lens) 1.75" x 1.75" x 1.18"
Lensed & Lensless Configurations Available Yes
Precision Mounting Holes (M2x0.4) on
3 sides (2 per side)
Sealable Bulkhead Mounting Feature
on Lens Barrel (M29×1.0), WFOV Only
Image Processing & Display ControlsTau 640Tau 336Tau 324
NTSC/PAL (field switchable) Yes
Image Optimization Yes
Digital Detail Enhancement Yes
Invert/Revert (analog and 8-bit digital) Yes
Polarity Control (black hot/white hot) Yes
Color & Monochrome Palettes (LUTs) Yes
Digital Zoom 2x, 4x, 8x 2x, 4x
Continuous Zoom Yes
Symbology (256 gray & 256 color) Yes, single-pixel resolution for all models
Digital VideoTau 640Tau 336Tau 324
LVDS (14-bit or 8-bit) Yes
CMOS (14-bit or 8-bit) Yes
BT.656 (8-bit) Yes
Camera Link (Expansion Bus Accessory Module) Yes
Slow Video Option (factory configured) Yes
InterfacingTau 640Tau 336Tau 324
Primary Electrical Connector 50-pin Hirose
Input Supply Voltage 4.0 - 6.0 VDC
Power Dissipation, steady state (max 2.5W during shutter event of approximately 0.5 seconds) <1.2 W ~1.0 W
Flat-Field Correction (FFC) Duration <0.5 sec
Power Reduction Switch (disables analog video) Yes
RS-232 Compatible Communication 57,600 & 921,600 baud
External Sync Input/Output Yes
Discrete I/O Controls Available Yes (10-camera minimum)
Settable Splash Screens Yes (10-camera minimum)
User Configurability via SDK & GUI Yes
Dynamic Range Switching No Yes
EnvironmentalTau 640Tau 336Tau 324
Operating Temperature Range -40°C to +80°C
Non-Operating Temperature Range -55°C to +95°C
Temperature Shock 5°/min
Operational Altitude +40,000 feet
Humidity 5% - 95% non-condensing
Vibration 4.3g three axis, 8 hr each
Shock 200g shock pulse w/ 11 msec sawtooth
ROHS Compliant
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