Uncooled Fixed Optical Gas Imaging 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. The GF77a also comes in a GF77f variant that includes environmental housing for harsh environments.
Offers industry-leading features for continuous monitoring applications including High Sensitivity Mode, remote motorized focus, and open architecture for third-party integration.
Spectrally-filtered to detect methane gases, improving worker safety and leak location identification with fewer in-person inspections.
RTSP and GigE compliant, the GF77a offers flexibility to meet many industrial communication needs and connects to a network for continuous leak detection.
| IR Resolution | 320 × 240 (76,800 pixels) |
|---|---|
| Thermal Sensitivity (NETD) | <25 mK at 30°C (86°F) |
| Spectral Range | 7 – 8.5 µm |
| Detector Type | Uncooled microbolometer |
| Detector Pitch | 25 µm |
| Field of View (FOV) | 25° × 19° (25° lens) or 6.4° × 4.9° (6° lens) |
| Focal Length | 18 mm (25° lens) / 74 mm (6° lens) |
| Minimum Focus Distance | 0.3 m (0.98 ft) for 25° lens; 5 m (16.4 ft) for 6° lens |
| Image Frequency | 30 Hz |
| Image Sources | Visual / IR / MSX |
| Visual Resolution | 1280 × 960 pixels |
| Spatial Resolution (IFOV) | 1.4 mrad/pixel |
| Contrast Enhancement | Histogram equalization (IR only) for RTSP/GVSP streaming |
| Video Lamp | Built-in LED light |
| Gas Sensitivity (NECL) | CH₄ (<100 ppm×m), N₂O (<75 ppm×m), C₃H₈ (<400 ppm×m), SO₂ (<30 ppm×m); ΔT = 10°C, distance = 1 m |
|---|---|
| Measurement Corrections | Atmospheric, optics transmission, emissivity, reflected apparent temperature, external optics/window |
| Object Temperature Range | -20 to 70°C (-4 to 158°F) |
| Accuracy | ±5°C (±9°F) typical (ambient 15–35°C, object above 0°C) |
| Connection Type | Wi-Fi (peer-to-peer or infrastructure) |
|---|---|
| Ethernet | GigE Vision 1.2; TCP/IP, RTSP, RTP, HTTP, SNMP, DHCP |
| Ethernet Power | Power over Ethernet (PoE IEEE 802.3af Class 3) |
| Digital Inputs | 2× opto-isolated (Vin low: 0–1.5 V, Vin high: 3–25 V) |
| Digital Outputs | 3× opto-isolated, 0–48 VDC, max. 350 mA (solid-state, fault NC) |
| Serial Communication | RS232 and RS485 (pan/tilt control) |
| Streaming Protocols | RTSP (H.264/MPEG4/MJPEG), GVSP (GigE Vision) |
| External Power | PoE or external 18–56 VDC, 8 W max |
|---|---|
| Power Consumption | 6.8 W at 24 VDC typical; ~7–7.3 W at 48 VDC or PoE |
| Housing Material | Aluminum |
|---|---|
| Dimensions (L×W×H) | 123 × 77 × 77 mm (4.84 × 3.03 × 3.03 in) |
| Weight | 0.82 kg (1.8 lbs) |
| Pan/Tilt | Optional; Pelco D control |
| Encapsulation | IP54 (IEC 60529), IP66 with accessory |
|---|---|
| Operating Temp Range | −30 to 50°C (−22 to 122°F) |
| Storage Temp Range | −40 to 70°C (−40 to 158°F) |
| Humidity | 5% to 95% relative humidity |
| Corrosion Resistance | Salty fog resistance to 1000 hours |
Specifications are subject to change without notice. FLIR GF77a and related trademarks are trademarks of Teledyne FLIR LLC.:contentReference[oaicite:1]{index=1}
