A comprehensive review of the FLIR thermal imaging camera

September 24, 2021

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3 min read

In this article, we’ll be comparing the FLIR ONE Gen 3 camera, available at $200 on Amazon, with the FLIR ONE Pro camera priced at $375. Both cameras are available for iOS and Android devices, offering flexibility to users.

These compact cameras measure 2.7×1.3×0.6 inches, with the Gen 3 weighing 34.5g and the Pro weighing 36.5g. They easily connect to iPhones via an adjustable male lightning port that accommodates various phone case thicknesses. The cameras are powered by a battery that lasts approximately 40 minutes and takes an hour to fully charge. Each package includes a USB type C charging cable and a padded carrying pouch. To use the FLIR thermal camera, simply plug it into the charging port, tighten the dial, install the FLIR ONE app, and power up the camera.

Differences between the cameras

1. Temperature Range:

Gen 3: Measures temperatures from -20°C to 120°C or -4°F to 248°F.
Pro: Measures temperatures from -20°C to 400°C or -4°F to 752°F, offering 3 times higher temperature measurement capability. The Gen 3 is suitable for residential applications, while the Pro is more useful for industrial settings like boilers, kilns, or furnaces.

2. IR Resolution:

Gen 3: Offers 80×60 pixel images.
Pro: Provides 160×120 pixel images, which are 4 times better in resolution, resulting in more detailed and accurate measurements. Higher resolutions are essential for precise thermal imaging.

3. Spectral Range:

Both cameras are long wave with a spectral range of 8-14 micrometers. However, the Pro has a smaller pixel size of 12um, allowing for more pixels in an image compared to the Gen 3’s 17um pixel size. This leads to enhanced image quality and clarity.

4. Thermal Sensitivity (NETD):

Gen 3: Has a thermal sensitivity of 150mK.
Pro: Boasts a thermal sensitivity of 70mK, indicating better sensitivity for the infrared system. This is evident when comparing images of hot and cold spots, where the Pro provides more detailed and accurate results.

5. Refresh Rate

Both cameras have a fixed focus of 15cm to infinity, ensuring consistent focus without manual adjustments. However, they have a relatively slow refresh rate of 8.7 Hz, which may cause the video to appear laggy and stuttering. This limitation is a government and trade regulation, beyond FLIR’s control.

Uses

The FLIR thermal cameras offer a range of applications, such as detecting trouble spots during home remodels. Users can identify potential issues like hot spots on ceilings, poorly insulated areas, and heat seeping through attic fans. The detailed thermal imaging provided by these cameras makes it easier to address and rectify such problems.

As you embark on your own thermal imaging journey, we hope this comparison guide helps you make an informed decision. Both the Gen 3 and Pro cameras deliver exceptional results, and choosing the right one depends on your specific needs and use cases. Whether you’re a DIY enthusiast or an industry professional, FLIR’s infrared thermal cameras offer a powerful tool to enhance your work and understanding of thermal energy.