The FLIR GF309 is designed for high temperature industrial furnace applications.

These infrared cameras are ideal for monitoring all types of furnaces, heaters and boilers, particularly in the chemical, petrochemical and utility industries. Custom-built to see through flames, the FLIR GF309 also features a detachable heat shield designed to reflect heat away from the camera and camera operator, providing increased protection.

The portable camera also greatly improves operator safety, by measuring through flames at a safe distance, for all types of furnaces. A good knowledge of the furnace condition can avert failures and unscheduled shutdowns. 

Additional Info

Key Features

See More with New Furnace Lens Extender

If viewports are restricting the view to your furnace tubes, then the new GF309 lens extender may be necessary. It offers better angles when measuring temperatures through a viewport. Better angles mean improved safety, more accurate measurements, and more comprehensive scans.

FLIR-GF-Series-Furnance-Inspection.jpg GF309-Furnace-Inspection-IR-Image.jpg

Engineered to “See Through Flames”

FLIR has developed a camera specially designed to inspect industrial furnaces, heaters and boilers, the FLIR GF309. The camera is equipped with a special mid wave “flame filter” that is specifically engineered for high temperature (up to 1500°).

Faster and Safer Inspections

The FLIR GF309 infrared camera provides temperature readings across the entire surface of your heater/boiler/furnace and will help you to inspect faster, work safer and avert unscheduled shutdowns.



Model Number GF309
Imaging Specifications
Detector Type Cooled InSb
Spectral Response 3.8 – 4.05 μm
Resolution 320 × 240
Total Pixels 76,800
Thermal Sensitivity <15 mK @ +30°C (+86°F)
Accuracy ±1°C (±1.8°F) for temperature range 0°C to +100°C (+32°F to +212°F) or ±2% of reading for temperature range >+100°C (>+212°F)
Temperature Range -40°C to 1,500°C (-40°F to 2,732°F)
High Temp Option Yes
Lens Options Standard: 24° × 18°; Optional: 14.5°, 6°
AND New Lens Extender 24° OR 14.5°
Zoom 1 – 8× continuous digital
Focus Auto & Manual
Color LCD 4.3”; 800 × 480 Pixels
Adjustable Viewfinder Tiltable OLED, 800 × 480 pixels
Video Camera w/Lamp 3.2 MP
Laser Spot Yes
Video Out HDMI
Spotmeters 10
Area Boxes 5 (min./max./avg.)
Profiles 1 live line (horiz. or vert.)
Delta T Yes
File Storage
Radiometric JPG Yes
Radiometric Video (15Hz) Yes
MPEG Video Recording Yes

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