FLIR GFx320 Intrinsically Safe Optical Gas Imaging Camera
The FLIR GFx320 is a handheld cooled detector thermal camera that makes invisible gas leaks visible. It was the first handheld FLIR camera of its kind certified for hazardous locations so inspectors can survey natural gas well sites, offshore platforms, LNG terminals, and refineries for fugitive methane hydrocarbon, and VOC emissions without shutting anything down. It is made by Teledyne FLIR and is used for leak detection and repair (LDAR) programs.
Key Features FLIR GFx320
- Optical gas imaging: a cooled indium antimonide (InSb) detector with a 3.2 to 3.4 µm spectral range visualizes gas plumes in real time, from a safe distance
- 320 × 240 resolution: 30 µm detector pitch 14 bit dynamic range, and a 24° fixed lens (38 mm focal length, f/1.5)
- Very high thermal sensitivity: NETD below 10 mK at 30 °C which shows the small temperature differences that reveal gas
- Detects more than 400 gases: FLIR lists compounds such as methane, ethane, propane, butane pentane, benzene, toluene, ethylene, propylene, methanol, and ethanol and tracing of hydrogen leaks (in the case of hydrogen detection FLIR points users toward the later G Series)
- Gas sensitivity: typical NECL figures around 13 ppm.m for methane, 3 ppm·m for propane, and 2 ppm·m for butane
- High Sensitivity Mode (HSM): a proprietary mode that uses image subtraction to make plume movement more obvious
- Hazardous location compliance: ATEX/IECEx Ex ic nC op is IIC T4 Gc and ANSI/ISA and CSA Class I, Division 2 certification which can reduce pre survey paperwork
- Ergonomic design: an articulating (rotating) color LCD and a viewfinder with direct access controls for all day surveys
- Temperature measurement: calibrated for temperature measurement which helps users judge the thermal contrast between the gas and the background
- Mounting: standard 1/4″-20, and a 7.2 V Li-ion battery
- Quantification option: used with the FLIR QL320 system the camera Q-Mode lets users quantify leaks in the field
Typical Applications
- Leak detection and repair (LDAR) in oil and gas
- Well sites, compressor stations, offshore platforms, and LNG terminals
- Refineries, chemical plants, and bio gas or power generation plants
- Inspection of tanks, vents, valves, and flanges
- Environmental compliance and emissions monitoring
Why Choose It
The FLIR GFx320 combines high gas sensitivity with intrinsic safety in a handheld camera so inspectors can scan thousands of components quickly and safely. Seeing the leak makes it much easier to find, document, and fix the source.





