Description
FLIR GF77 – Gas Find IR with 25° LR, 25° HR and 6° HR Lenses (85206-0102)

- GF77 Gas Find IR cameras
- Includes 3 lenses – 25° low range, 25° high range and 6° high range
- Primary gases detected with low range lens: Methane, nitrous oxide, propane, sulfur dioxide, R-134a and R-152a
- Primary gases detected with high range lens: Sulfur hexafluoride, ammonia, ethylene
- Part number 85206-0102
The FLIR GF77 is a groundbreaking uncooled optical gas imaging camera with interchangeable lens options that detect methane (CH4), sulfur hexafluoride (SF6), ethylene (C2H4), ammonia (NH3), and other gas emissions. Capable of both gas detection and radiometric temperature measurement, the GF77 is an ideal inspection tool for electric power utilities, oil and natural gas operations, chemical / manufacturing facilities, the food and agriculture industry, and first responders. This camera offers unmatched versatility as well as improved visualization of gas emissions and thermal inspections.
Based on the award-winning design of the FLIR T-Series platform, the GF77 offers a vibrant, 4-inch touchscreen LCD, 180° rotating optical block, and eyepiece for convenience in direct sunlight. This affordable solution offers the benefit of built-in thermographic calibrations and the flexibility to detect a wide range of gases by simply changing lenses.
Available lenses and gases detected for each
The GF77 is offered in several packages with high and low range lenses in both 6 and 25 degrees. The high and low range lenses can be used to detect the following:
- Low range – Methane, nitrous oxide, propane, sulfur dioxide, R-134a and R-152a
- High range – Sulfur hexafluoride, ammonia, ethylene
The chart below shows the different packages available for the GF77 and the lenses which are included.
Part number | 6 LR | 25 LR | 6 HR | 25 HR | |
GF77 25LR | 85201-0102 | ||||
GF77 25HR | 85202-0102 | ||||
GF77 25LR 25HR | 85203-0102 | ||||
GF77 25LR 6LR | 85204-0102 | ||||
GF77 25HR 6HR | 85205-0102 | ||||
GF77 25LR 25HR 6HR | 85206-0102 | ||||
GF77 25LR 6LR 25HR | 85207-0102 | ||||
GF77 25LR 6LR 25HR 6HR | 85208-0102 |

MAXIMIZE EFFICIENCY
Locate gas leaks and perform thermal inspections with one camera
- Visualize CH4 , SF6 , NH3 , and C2 H4 in different wavelengths with a versatile lens solution, and inspect critical components using the built-in thermal imager
- Scan for emissions from a safe distance and track them to the source to begin repairs immediately
- Take accurate temperature measurements in all environments from -20°C to 500°C with ±3°C or 3% temperature accuracy
- Switch to viewfinder in bright, sunlit conditions to ensure optimal viewing

AFFORDABLE OPTICAL GAS IMAGING
Provide every site with one or more GF77 cameras with industry-leading features
- Improve gas-detection contrast with 1-Touch Level/Span auto-adjustment feature
- Increase leak detectability by activating FLIR patented High Sensitivity Mode (HSM)
- Precisely resolve target area with laser-assisted autofocus
- Use data from the built-in area measurement tool to calculate tank level and volume

STREAMLINE INSPECTIONS AND REPORTING
Work easier with the ergonomic design, rapid-reporting features, and tools to organize findings in the field
- Define routes and improve inspection flow with the optional add-on of FLIR Thermal Studio Pro and FLIR Route Creator*
- Automatically tag each image file with GPS geolocation data for easy identification
- Connect instantly over Wi-Fi to mobile devices for data transfer and reporting
Thermal Imagers/Building and Industrial Thermal Imagers Template | |
---|---|
Detector Size | 320 x 240 Sensor |
Thermal Sensitivity | 40 mK (NETD) |
Temperature Range Max | 932 F |
Temperature Range Min | -4 F |
Image Frequency | 30 Hz |
Screen Size | 4 IN |
IR/Overlay Fusion Image | Yes |
Video Output | Yes |
Focus | Auto Focus |
Laser Spot | Yes |
Picture in Picture | Yes |
Video Recording | Yes |
Moveable Spots | Yes |
Touch Screen Display | Yes |
Minimum Focus Distance | 0.3 M |
Battery operating time Continuous | 4 HR |
Camera Light | Yes |
IR Digital Zoom | Yes |
Voice Annotation | Yes |
Intrinsically Safe | No |
Product General Attributes | |
Product Weight | 3.1 LBS |
Product Height | 14.60 IN |
Product Length | 19.70 IN |
Product Width | 7.50 IN |
Shipping Weight | 13.9 LBS |
HTS/Schedule B Number | 9027504020 |
ECCN Number | 6A003.b.4.b |
Country of Origin | Sweden |
Shipping Height | 14.60 IN |
Shipping Length | 19.70 IN |
Shipping Width | 7.50 IN |
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