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10 Best Flir Cameras 2025 in the United States
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Buying Guide for the Best Flir Cameras
FLIR cameras, also known as thermal imaging cameras, are devices that detect infrared radiation and convert it into an image. These cameras are used in various fields such as building inspections, electrical inspections, mechanical inspections, and even in medical and veterinary applications. When choosing a FLIR camera, it's important to understand the key specifications that will determine how well the camera will meet your needs. Here are the main specs to consider and how to navigate them.ResolutionResolution refers to the number of pixels in the thermal image. Higher resolution means more detail and clarity in the image. This is important because it allows you to see smaller details and identify issues more accurately. Resolutions can range from low (80x60 pixels) to high (640x480 pixels) or even higher. If you need to inspect small components or require detailed images, opt for a higher resolution. For general inspections where fine detail is less critical, a lower resolution may suffice.
Thermal Sensitivity (NETD)Thermal sensitivity, or Noise Equivalent Temperature Difference (NETD), measures the smallest temperature difference the camera can detect. It is expressed in millikelvins (mK). Lower NETD values indicate higher sensitivity, meaning the camera can detect smaller temperature differences. This is crucial for applications where detecting minute temperature variations is important, such as in medical diagnostics or detailed building inspections. For general use, a higher NETD value may be acceptable.
Temperature RangeThe temperature range indicates the minimum and maximum temperatures the camera can measure. This is important because it determines the types of environments and applications the camera can be used for. For example, a camera with a range of -20°C to 150°C is suitable for building inspections, while a range of -40°C to 650°C or higher is needed for industrial applications. Choose a camera with a temperature range that matches the temperatures you expect to encounter in your specific use case.
Field of View (FOV)Field of View (FOV) describes the extent of the observable area the camera can capture at any given moment. A wider FOV allows you to see a larger area, which is useful for scanning large surfaces quickly. Conversely, a narrower FOV provides more detail in a smaller area, which is beneficial for close-up inspections. Consider the size of the area you need to inspect and choose a FOV that provides the right balance between coverage and detail.
Image Frequency (Refresh Rate)Image frequency, or refresh rate, is the number of times per second the camera updates the thermal image. It is measured in Hertz (Hz). Higher refresh rates provide smoother and more fluid images, which is important for capturing moving objects or for applications requiring real-time analysis. Common refresh rates are 9 Hz, 30 Hz, and 60 Hz. For static inspections, a lower refresh rate may be sufficient, but for dynamic environments or fast-moving subjects, a higher refresh rate is preferable.
Display OptionsDisplay options refer to how the thermal images are viewed and analyzed. Some FLIR cameras come with built-in displays, while others connect to external devices like smartphones, tablets, or computers. Built-in displays offer convenience and portability, making them ideal for fieldwork. External displays can provide larger viewing areas and more advanced analysis tools. Consider where and how you will be using the camera and choose a display option that fits your workflow.
ConnectivityConnectivity options determine how the camera communicates with other devices. Common connectivity features include Wi-Fi, Bluetooth, USB, and HDMI. These features allow you to transfer images, control the camera remotely, and integrate with other software and hardware. If you need to share images quickly, control the camera from a distance, or integrate with other systems, look for a camera with the appropriate connectivity options.