Whether you choose a simple point-and-shoot model or a high-end thermal imager with all the bells and whistles, here are some key features and specs you should consider:
Resolution
Focus
With a variety of focus mechanisms to choose from, it is important to take into account your skill level as well as the application in selecting a focus type. Here are the common focus mechanisms:
Temperature range
The highest and lowest temperature you encounter in your inspection determines the temperature range you need from your thermal imager. Or, select a camera with a wide temperature range that automatically selects the range based on your scene, or allows you to manually select the temperature range.
Lens options
A camera that lets you change lenses increases your versatility, allowing you to inspect many more types of equipment and situations. There are lots of choices for lots of applications—standard, wide angle, telephoto, and macro.
Saving images and additional data
Save infrared and digital images and in some cases voice notes to internal memory, a removable SD card, or to a USB flash drive. It’s important to have the flexibility to save images and additional related data to different media for backup or sharing.
Color palettes
Slight differences are easier to see with a monochromatic palette, such as grayscale or amber. High contrast palettes can make it easier to quickly find obvious anomalies. You should be able to change the palette in the camera or in the software.
Color alarms
Use these to quickly highlight areas outside your normal temperature ranges.
Emissivity and reflected temperatures
Low emissivity surfaces, such as shiny metals, can reflect infrared energy from other objects and throw off your image and your measurement accuracy. So, look for the option to adjust parameters when choosing an imager.
Spot markers
Mark specific temperatures on your image to compare simultaneous temperatures from multiple points on the same image.
Battery type and life
Look for a battery with useful features such a charge level indicator. Nothing is worse than starting an inspection with no idea of the battery status. Also consider long battery life and quick charging ability.
Source – FLUKE
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