- Field of view (FoV): 25°(H) × 19°(V) (18mm lens), 6.4°(H) × 4.9°(V) (74mm lens) /li>
- IR resolution: 320 × 240 (76,800) pixels
- Thermal resolution/NETD: <25 mk at 30°C (86°F)
- Spatial resolution (IFoV): 1.4 mrad/pixel
- Image frequency: 30 Hz
- Focal plane array/spectral range: Uncooled microbolometer / 7 - 8.5 μm
- Detector pitch: 25 μm
Please inquire for lead time and availability.
- : Out Of Stock
- SKU: GF77a
Available Options
EXPORT CONTROLLED PRODUCT :
FLIR 320x240 60Hz and 30Hz Fast-Video and 640x480 30Hz Fast-Video (>9Hz) uncooled LWIR Thermal Camera Core products are export controlled and require validated export licenses from the U.S. Department of Commerce prior to export or re-export outside of the United States to certain countries.
Strategic Trade Authorized (STA) Countries are an exception. In circumstances whereby "RHP International" delivers a camera to a customer in the U.S. who intends to export or re-export the FLIR camera outside of the United States, whether or not the camera is integrated into another product, it is the customer’s responsibility to apply for the required export license from the appropriate department of the U.S. government. Diversion contrary to U.S. law is prohibited.
Click the link below for a list of STA countries and more Export information.
The Export Conditions page details information regarding what countries thermal cameras can be exported to.
FLIR GF77a
FIXED GAS FIND IR CAMERA
The FLIR GF77a is the first uncooled autonomous leak detection camera from FLIR designed specifically to visualize methane gas. This affordable, fixed-camera solution provides upstream and midstream gas processors, producers, or operators the features they need to continuously monitor for potentially dangerous, invisible methane leaks. Small and lightweight, the FLIR GF77a is packed with FLIR-patented features, such as High Sensitivity Mode (HSM), for improved gas visualization. The GF77a can help oil and gas companies maintain valuable capital equipment, avoid product loss, meet emissions reduction metrics, and ensure safer work practices.
Continuous, autonomous methane gas detection

AFFORDABLE FIXED OGI SOLUTION
Offers industry-leading features for continuous monitoring applications including High Sensitivity Mode, remote motorized focus, and open architecture for third-party integration.
• Increase leak detectability by activating FLIR-patented High Sensitivity Mode (HSM)
• Remote motorized focus ensures a crisp image and measurement accuracy for objects at different distances
• See more with dual-streaming capabilities from thermal plus built-in digital cameras
• Simple third-party integration thanks to open architecture

VISUALIZE INDUSTRIAL GASES
Spectrally-filtered to detect methane gases, improving worker safety and leak location identification with fewer in-person inspections.
• Continuously monitor for methane emissions so you can begin repairs immediately
• Visualize gases in specified spectrum while also reducing false negatives of gases that absorb in another wavelength
• Temperature-calibrated for added use in thermography, fire detection, and worker safety
• Install multiple units across a facility to maximize leak detection with fewer in-person inspections

UNMATCHED CONNECTIVITY
RTSP, GigE and ONVIF compliant, the GF77a offers flexibility to meet many industrial communication needs and connects to a network for continuous leak detection.
• Connects to a network for continuous, autonomous leak detection
• RTSP and GigE compliant for flexibility to meet many industrial communication needs
• ONVIF compliant to ease integration with standard security and NVR solutions
• Compressed radiometric image streaming saves network bandwidth and allow multiple outputs simultaneously
OVERVIEW | |
Spectral Band | 7 – 8.5 µm |
Accuracy | ±5°C (±9°F) for ambient temperature 15°C to 35°C (59°F to 95°F) and object temperature above 0°C (32°F) |
Field of View | 25° lens: 25° × 19° 6° lens: 6.4° × 4.9° |
Minimum Focus Distance | 0.3 m (0.98 ft) for 25° lens; 5 m (16.4 ft) for 6° lens |
Resolution | 320 × 240 (76,800) pixels |
Temperature Range | –20°C to 70°C (–4°F to 158°F) |
Detector Type | Uncooled microbolometer |
Focal Length | 25° lens: 18 mm 6° lens: 74 mm |
Weight | 0.82 kg (1.8 lbs) |
Dimensions (L x W x H) | 123 × 77 × 77 mm (4.84 × 3.03 × 3.03 in) |
Web interface | Yes |
Encoding | Video streaming – RTSP Protocol: H.264 / MPEG4 / MJPEG; GVSP: Uncompressed Radiometric streaming – RTSP Protocol: Compressed JPEG-LS, FLIR radiometric; GVSP: Uncompressed, signal linear, temperature linear, FLIR radiometric |
Contrast Enhancement | Histogram equalization (IR only) for RTSP and GVSP video streaming, Image Source 0 |
CONNECTIONS & COMMUNICATIONS | |
Connector | Pan and tilt control: M8 A-coded, male; Wi-Fi: Female RP-SMA (Pan/Tilt is an optional feature) |
Digital I/O connector type | M12 Male 12-pin A-coded (shared with ext. power) |
Digital Inputs | 2x opto-isolated, Vin (low) = 0 - 1.5 V, Vin (high) = 3-25V |
Digital Output Purpose | • Programmatically set • Fault (NC) |
Serial Control Interfaces | Pan and tilt control: RS232 and RS485 exclusively |
Digital Outputs | 3x opto-isolated, 0–48 VDC, max. 350 mA (derated to 200 mA at 60. Solid-state opto relay, 1x dedicated as Fault output (NC) |
Ethernet Communication | GigE Vision ver. 1.2, Client API GenICam compliant, TCP/IP socket-based FLIR proprietary |
Ethernet Image Streaming | Yes |
Ethernet Connector Type | M12 8-pin X-coded, Female |
Ethernet Power | Power over Ethernet, PoE IEEE 802.3af class 3 |
Ethernet Protocols | IEEE 1588, ONVIF-S, SNMP, TCP, UDP, SNTP, RTSP, RTP, HTTP, ICMP, IGMP, sftp (server), FTP (client) SMTP, DHCP, MDNS (Bonjour), uPnP |
Connection Type | Wi-Fi: Peer to peer (ad hoc) or infrastructure (network) |
WiFi | Wi-Fi standard – IEEE802.11a/b/g/n |
Multicast | RTSP Protocol, GVSP (GigE Vision) Protocol |
Unicast | RTSP Protocol, GVSP (GigE Vision) Protocol |
DETECTOR | |
Visual Focus and FOV | Fixed, 67.2° diagonal |
IMAGING & OPTICAL | |
Detector Pitch | 25 µm |
Focal Plane Array (FPA) | Uncooled microbolometer/7 – 8.5 µm |
Focus | One-shot contrast, motorized, manual |
Image Frequency | 30 Hz |
Spatial resolution (IFoV) | 1.4 mrad/pixel |
Visual Resolution | 1280 × 960 pixels |
Overlay | Image Source 0: RTSP Protocol: with, without; GVSP (GigE Vision) Protocol, with, without, |
Thermal Resolution [NETD] | <25 mk at 30°C (86°F) |
Gas Sensitivity [NECL] | CH4 (<100 ppm × m), N2O (<75 ppm × m), C3H8 (<400 ppm × m); ΔT = 10°C, distance = 1 m |
Video Lamp | Built-in LED light |
MEASUREMENT & ANALYSIS | |
Correction Options | Atmospheric, optics transmission, emissivity, reflected apparent temperature, external optics/window |
Measurement Corrections | Global object parameters |
PAN-TILT | |
Pan/Tilt Option | Optional feature; Control standard – Pelco D |
ENVIRONMENTAL | |
Encapsulation | IP 54 (IEC 60529) IP66 with accessory |
POWER | |
General | PoE or external |
Power Consumption | 6.8 W at 24 V DC typical 7.0 W at 48 V DC typical 7.3 W at 48 V PoE typical |
External Voltage | Allowed range 18-56 VDC, 8 W max. |