Flir GF77 – Gas Find IR

FLIR GF77 is the first uncooled infrared camera from FLIR to visualize methane emissions in realtime for faster, more efficient gas leak surveys. This nimble, affordable alternative to FLIR’s industry-leading cooled optical gas imagers was designed for use by renewable energy producers, at natural gas power plants, and at locations along the natural gas supply chain.

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Product Overview: Flir GF77 – Gas Find IR

Flir GF77 – Gas Find IR

Improve Gas Detection

Improve image clarity and gas detection with advanced features from FLIR. The GF77 is calibrated for temperature, so you can manually adjust contrast between the gas cloud and the background. Or, increase contrast instantly with the 1-Touch Level/Span auto-adjustment feature. Finally, accentuate plume movement with FLIR High Sensitivity Mode (HSM).


The Groundbreaking, Affordable OGI Camera


    By filtering for methane and similar gases, the Flir GF77 improves detection while also reducing false negatives from gases that absorb in other wavelengths.


    From laser-assisted autofocus to 1-Touch Level/Span contrast enhancement, the GF77 offers the latest high-tech features you’d expect from FLIR.


    Designed with a 180° rotating optical block and an eyepiece viewfinder for all-day use, and packed with reporting features that help you organize your findings in the field.



Flir GF77 Specifications

Detector Type: Uncooled microbolometer

Dynamic Range: 14-bit

Focal Length: 18 mm (0.71 in.)

IR Resolution: 320 × 240 pixels

Mounting: Standard, 1/4″-20

Spectral Range: 7.0 – 8.5 µm

Zoom: 1-6x continuous digital zoom

Hazardous Location Compliance: No




Ambient temperature range: –15°C to 50°C (5°F to 122°F)

Encapsulation: IP 54 (IEC 60529)

Operating Temperature Range: –20°C to 50°C (–4°F to 122°F)

Shock & Vibration: 25 g (IEC 60068-2-27) / 2 g (IEC 60068-2-6)

Standard Temperature Range: –20°C to 70°C (–4°F to 158°F)

Storage Temperature Range: –40°C to 70°C (–40°F to 158°F)




Automatic Image Adjustment: NA

Camera f-number: f/1.04

Color palettes: Iron, Gray, Rainbow, Arctic, Lava, Rainbow HC

Detector Pitch: 25 µm

Field of view (FOV): 25° × 19°

Focus: Continuous LDM, One-shot LDM, One-shot contrast, Manual

Frame Rate [Full Window]: 30 Hz

Global Positioning System [GPS]: Location data stored with every image

Image Modes: Automatic, automatic maximum, automatic minimum, HSM, manual

Minimum Focus Distance: 0.3 m (0.98 ft.)

Sensor Cooling: NA

Streaming Video: Radiometric IR streaming over UVC. Non-radiometric IR video streaming: H.264 (AVC) over Wi-Fi, MPEG4 over Wi-Fi, MJPEG over UVC and Wi-Fi

Total Pixels: 76,800

Viewfinder: Yes

Image Analysis: 3 spotmeters in live mode, 3 area boxes in live mode, automatic hot/cold detection (maximum/minimum markers within area), delta temperature, emissivity & measurement correction

Non-Radiometric IR Video: H.264 to memory card

On Camera Display: 640 × 480 pixel (QVGA) 4″ LCD

Radiometric IR Video: RTRR (.csq)

Visual Image: 5 MP visible camera with LED light

Visual Video: H.264 to memory card




Accuracy: ±5°C (±9°F) for ambient temperature range -15°C to 35°C (59°F to 95°F)

NETD: <25 mK @ 30°C (86°F)




Battery Type: Rechargeable Li-ion battery

External Power Operation: AC adapter 90-260 VAC, 50/60 Hz or 12 VDC from a vehicle

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