Quantitative Optical Gas Imaging System for GF620/GFx320/GF320


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The QL320 is a quantitative optical gas imaging (QOGI) system that allows surveyors to measure the leak rates for methane and other hydrocarbons. This eliminates the need for secondary sampling with a toxic vapor analyzer or similar tool. In addition, the QL320 does not require close contact with the gas in order to measure emission rates, making it a safer solution for quantifying difficult-to-measure gas leaks.

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  • Quantifies Gas with Immediate Results

    With the FLIR QL320, you can determine mass leak rates (g/h, lb/h, MT/h), volumetric leak rates (cc/min, L/min, or SCFH), or concentration (ppm-m) for most hydrocarbon gases. Measure the size of fugitive emissions from safe distances, as far as 100 feet.

  • Ensures Effective Readings and Reports

    The FLIR QL320 has the built-in tools needed to validate leak surveys, plus a Δ temperature screening tool to determine suitablility of background conditions. In-field reporting includes archiving of measurements, colorized video and raw data for analysis and post-processing.

  • Streamlined In-Field Results with Q-Mode

    Used with a FLIR OGI camera's Q-Mode, the QL320 gathers relative information in the camera and post-processes the data for quantified results without the need to tether directly to the camera.

Gas Quantified with Immediate Results

Gas Quantified with Immediate Results

The QL320 is portable, easy to use, and provides results in the field within seconds. The tablet connects quickly to FLIR GF620, GFx320, and FLIR GF320 cameras without the need for modifications. The QL320 synchronizes with multiple optics and temperature ranges, and can be used to post-process video sequences stored via Q-Mode without the need to tether the camera to the tablet.

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Display Technology
11.6" sunlight readable TFT LCD capacitive touchscreen
308 × 200 × 29 mm (12.125 × 7.875 × 1.125 in)
1.24 kg (2.73 lbs)
Reinforced touchscreen; scratch and shatter resistant film
Connections & Communications
Bluetooth V 5.0, 4G LTE mobile broadband
On-screen keyboard; 6 buttons (1 user-definable)
SD card reader (microSDXC), USB 3.0 (Type A) x 2
ANSI/ISA 12.12.01-2000 (Class I, Division 2), IP 65 Ingress Protection
Imaging & Optical
Display resolution
1920 × 1080
Display Size
294.6 mm (11.6 in)
Image Modes
Single image snapshot with colorized plume and quantitative result
Compatible cameras
Measurement & Analysis
Measurement Modes
Mass leak rates (g/h, lb/h, MT/h), volumetric leak rates (cc/min, L/min, or SCFH), or concentration (ppm-m)
Measurement Tools
Δ temperature screening, plume highlighting, colorized gas concentration profile
Battery type
Li-ion rechargeable battery; 11.1 V, 3950 mAh, 8 hours
AC adapter 100-240 V, 50 Hz-60 Hz, 65 W
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