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Now more than ever, the use of Highly Accurate Thermographic (HAT) is a critical part of any business plan for enhancing safety and security.
Below you will find some best practices for ensuring that the investment of HAT devices can be fully realized, and to maximize their effectiveness.
The environment in which the HAT devices are installed can severely impact the performance and accuracy of a scan. The following guidelines should be followed to mitigate false or inaccurate screens.
Proper configuration of both the HAT device and Calibrator are critical to ensuring accurate scanning.
Equally important as the configuration of the HAT is the subjects being scanned maintaining best practices as well.
Once proper configuration of the scanning environment has been achieved, making sense of the data is the last step in utilizing the HAT devices.
Model specific, see the detailed spec sheet per product for the suggested capture distance
The equipment by itself is very accurate (within .5°F +/-), including the calibrator and positioning it properly can increase accuracy down to .25°F +/-.
The camera can be configured to take a snapshot when an irregular temperature is detected; in addition to the snapshot, the capture device can also trigger various other alerts (mobile app push notification, email, physical alarm relay).
Temperature can be measured in fahrenheit, celsius, or kelvin.
No, thermal imaging cameras cannot be used to detect or diagnose an infection. However, thermal cameras are used today in public spaces such as airports and hospitals and by essential services such as manufacturing and shipping as an effective tool for measuring skin surface temperature. People who are identified as having an elevated skin temperature can then be screened by medical professionals.
Thermal cameras detect heat radiation and can be used to identify the surface temperature of objects and people. With this capability, thermal cameras are commonly used as a non-contact screening tool to detect differences in skin surface temperatures and pattern changes.
In order to obtain a good temperature reading, it is recommended that the intended target be as close to the camera as possible (with respect to the camera’s minimum focus distance). It is important that the application be set up so that all intended targets are in focus during the screening process, thereby creating a good image. In addition to focus, a good image is dependent on several additional functions and settings, with certain functions and settings affecting the image more than others. Functions and settings that the operator needs to set and/or adjust include the following:
Thermal cameras with a screening mode can achieve accuracies of 0.5°F (±0.3°C) at the recommended ambient temperature of 86°F to 113°F (30°C to 45°C).
It’s important to note there are many factors that can affect the accuracy of thermal cameras, such as focus, distance, the emissivity* of the target, the ambient environment, and the speed at which the temperatures are acquired.
There are advantages and disadvantages to using a Precision Infrared Calibrator when screening for elevated skin temperatures. Including a Precision Infrared Calibrator in the camera’s field of view can improve the system’s performance in this application. You can use thermal cameras with Precision Infrared Calibrators as part of an elevated skin temperature system setup.
In contrast, using a Precision Infrared Calibrator for elevated skin temperature screenings can create challenges. The first is the cost and complexity of including an additional piece of hardware in the solution. Precision Infrared Calibrator integration into a system makes mounting, powering, and ultimately maintaining it more complex. Such an addition also introduces another potential point of failure into the overall solution.
Proper focus on the Precision Infrared Calibrator is essential to getting accurate measurements. For a Precision Infrared Calibrator to be effective, it must be mounted in the same plane as the person being screened. A Precision Infrared Calibrator that is significantly closer or farther than the person being screened will be out of focus and not function as an accurate reference source.
If ultimately the screening solution includes the use of a Precision Infrared Calibrator, we recommend following these requirements, as set forth in ISO/TR 13154:2017:
We recommend that thermal camera operators obtain at a minimum Level 1 thermal imaging certification through certified thermography courses such as the Infrared Training Center. This is not a medical training or medical certification, but it provides a baseline understanding in thermography. The Infrared Training Center offers more advanced training.
When properly used, it can be an effective tool to help detect whether someone may have an elevated temperature and should be subject to further screening.
Questions? Call us at 800-460-1801