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.
| Highlighted | |
|---|---|
| IR Resolution | 320 × 240 (76,800) pixels |
| Thermal Sensitivity/NETD | < 25 mK at 30°C (86°F) |
| Spectral Range | 7 – 8.5 µm |
| Imaging & Optical | |
|---|---|
| Contrast Enhancement | Histogram equalization (IR only) for RTSP and GVSP video streaming, Image Source 0 |
| Detector Pitch | 25 µm |
| Detector Type | Uncooled microbolometer |
| Field of view (FOV) | FLIR GF77a 25° CH4 (7–8.5 µm): 25° lens: 25° × 19°
6° lens: 6.4° × 4.9°
FLIR GF77f 25°: 640 × 480 pixels; according to IR FOV 1280 × 960 pixels; 67.2° (diagonal) |
| Focal Length | FLIR GF77a 25° CH4 (7–8.5 µm): 25° lens: 18 mm
6° lens: 74 mm
FLIR GF77f 25°: 18 mm (0.71 in) |
| Focal Plane Array (FPA) - Spectral range | Uncooled microbolometer/7 – 8.5 µm |
| Focus | FLIR GF77a 25° CH4 (7–8.5 µm): One-shot contrast, motorized, manual FLIR GF77f 25°: Fixed |
| Gas Sensitivity [NECL] | CH4 (<100 ppm × m), N2O (<75 ppm × m), C3H8 (<400 ppm × m), SO2 (<30 ppm x m); ΔT = 10°C, distance = 1 m |
| Image Frequency | 30 Hz |
| Image Source | Visual / IR / MSX |
| Image Streaming Formats | See Video/Radiometric streaming RTSP and GVSP tables. |
| Image Streaming Resolution | See Video/Radiometric streaming RTSP and GVSP tables. |
| Infrared Resolution | 320 × 240 pixels |
| IR Resolution | 320 × 240 (76,800) pixels |
| Lens Identification | Automatic |
| Minimum Focus Distance | 0.3 m (0.98 ft) for 25° lens; 5 m (16.4 ft) for 6° lens |
| Overlay | Image Source 0: RTSP Protocol: with, without; GVSP (GigE Vision) Protocol, with, without, |
| Pixel Format | YUV411 |
| Resolution | REST API: 640 × 480 pixels, 1280 × 960 pixels Web UI: 640 × 480 pixels |
| Spatial resolution (IFOV) | 1.4 mrad/pixel |
| Spectral Range | 7 – 8.5 µm |
| Streaming Resolution | 640 × 480 pixels |
| Thermal Resolution [NETD] | <25 mk at 30°C (86°F) |
| Thermal Sensitivity/NETD | < 25 mK at 30°C (86°F) |
| Video Lamp | Built-in LED light |
| Visual Focus and FOV | Fixed, 67.2° diagonal |
| Visual Resolution | 1280 × 960 pixels |
| Measurement & Analysis | |
|---|---|
| Accuracy | Range 1: -20° to 80°C (-4° to 176°F) ±3°C (±5°F), Range 2: 0° to 250°C (212° to 482°F): 0° to 100°C (32° to 212°F):±3°C, 100° to 250°C (212° to 482°F):±3%, Range 3: 100° to 500°C (212° to 932°F):±3% |
| Atmospheric transmission correction | FLIR GF77a 25° CH4 (7–8.5 µm): C FLIR GF77f 25°: Based on inputs of distance, atmospheric temperature, and relative humidity |
| Correction Options | Atmospheric, optics transmission, emissivity, reflected apparent temperature, external optics/window |
| Emissivity Correction | FLIR GF77a 25° CH4 (7–8.5 µm): C FLIR GF77f 25°: Variable from 0.01 to 1.0 |
| External Optics & Windows Correction | FLIR GF77a 25° CH4 (7–8.5 µm): C FLIR GF77f 25°: Based on input of optics/window transmission and temperature |
| Measurement Corrections | Global object parameters |
| Object Temperature Range | Range 1: -20° to 80°C (-4° to 176°F), Range 2: 0° to 250°C (212° to 482°F), Range 3: 100° to 500°C (212° to 932°F) |
| Optics Transmission Correction | Automatic, based on signals from internal sensors |
| Reflected apparent temperature correction | FLIR GF77a 25° CH4 (7–8.5 µm): C FLIR GF77f 25°: Based on input of reflected temperature |
| Communication & Data Storage | |
|---|---|
| Connection Type | Wi-Fi: Peer to peer (ad hoc) or infrastructure (network) |
| 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 I/O isolation voltage | 500 VRMS |
| Digital input purpose | NUC NUC disable Image tag (Start, Stop, General) Image flow control (acc. SFNC 2.3) Single frame (on trigg) Multi-frame (on trigg) Continuous Frame rate ROI |
| Digital Inputs | 2x opto-isolated, Vin (low) = 0 - 1.5 V, Vin (high) = 3-25V |
| Digital Output Purpose | • Programmatically set • Fault (NC) |
| 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) |
| 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 |
| Ethernet Communication | GigE Vision ver. 1.2, Client API GenICam compliant, TCP/IP socket-based FLIR proprietary |
| Ethernet Connector Type | FLIR GF77a 25° CH4 (7–8.5 µm): M12 8-pin X-coded, Female FLIR GF77f 25°: RJ45, Female |
| Ethernet Image Streaming | Yes |
| Ethernet Interface | Wired |
| Ethernet Power | Power over Ethernet, PoE IEEE 802.3af class 3 |
| Ethernet Protocols | IEEE 1588, SNMP, TCP, UDP, SNTP, RTSP, RTP, HTTP, ICMP, IGMP, sftp (server), FTP (client) SMTP, DHCP, MDNS (Bonjour), uPnP |
| Ethernet Standard | IEEE 802.3 |
| Ethernet Type | 10/100Base-T |
| Multicast | RTSP Protocol, GVSP (GigE Vision) Protocol |
| Serial Communication | Pan and tilt control: RS232 and RS485 exclusively |
| Unicast | RTSP Protocol, GVSP (GigE Vision) Protocol |
| WiFi | Wi-Fi standard – IEEE802.11a/b/g/n |
| General | |
|---|---|
| Housing material | Aluminum |
| Package Includes | Thermal camera in protective housing Extra cable glands for auxiliary cables Printed documentation including the username and password for log in to the web interface of the camera |
| Packaging Size | 645 × 207 × 225 mm (25.4 × 8.15 × 8.86 in) |
| Packaging Type | Cardboard box |
| Packaging Weight | 6.8 kg (15.0 lb) |
| Pan/Tilt | Optional feature; Control standard – Pelco D |
| Size [L × W × H] | FLIR GF77a 25° CH4 (7–8.5 µm): 123 × 77 × 77 mm (4.84 × 3.03 × 3.03 in) FLIR GF77f 25°: 510 × 177 × 229 mm (20.1 × 6.97 × 9.02 in) |
| Weight | FLIR GF77a 25° CH4 (7–8.5 µm): 0.82 kg (1.8 lbs) FLIR GF77f 25°: 5.90 kg (13.0 lb) |
| User Interface | |
|---|---|
| Web interface | Yes |
| Power | |
|---|---|
| External Power Operation | Compatible with IEEE 802.3af, IEEE 802.3at/PoE Plus |
| External Voltage | FLIR GF77a 25° CH4 (7–8.5 µm): Allowed range 18-56 VDC, 8 W max FLIR GF77f 25°: PoE Class 4 (25W) |
| 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 |
| Environmental & Certifications | |
|---|---|
| Corrosion | Salty fog resistance: ISO9227, to 1000 hours |
| EMC | EN 55032:2015 Emission Requirements EN 55035:2017 Immunity Requirements FCC – Title 47 CFR Part 15:2019 ICES-001 Issue 4:2014 |
| Encapsulation | FLIR GF77a 25° CH4 (7–8.5 µm): IP 54 (IEC 60529) IP66 with accessory FLIR GF77f 25°: IP67 |
| Humidity (Operating and Storage) | Relative humidity: from 5% up to 95% |
| Lens Transmission Correction | C |
| Operating Temperature | –30 to 50°C (–22 to 122°F) |
| Storage Temperature Range | IEC 68-2-1 and IEC 68-2-2, –40 to 70°C (–40 to 158°F) for 16 hours |
| Warranty | http://www.flir.com/warranty/ |
Remarque : Pour obtenir des ressources d’assistance supplémentaires, veuillez consulter le site Support.FLIR.com.
Étude de cas
Détection et surveillance des fuites de méthane dans les installations de régulation de pression du GNL à l’aide de caméras OGI Flir et d’IA
Lire le témoignageThe information contained in this page pertains to products that may be subject to the International Traffic in Arms Regulations (ITAR) (22 C.F.R. Sections 120-130) or the Export Administration Regulations (EAR) (15 C.F.R. Sections 730-774) depending upon specifications for the final product; jurisdiction and classification will be provided upon request.
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