Infrared thermal imaging can convert the surface temperature distribution that cannot be directly seen by the human eye into a visible thermal image. It has very good applications in target detection and security. If we can use the infrared thermal imager correctly, we can maximize its working condition. The following is the specific method to use the infrared thermal imaging camera correctly.
1. Adjust the focus
The image curve can be adjusted after the infrared image is stored, but the focal length cannot be changed after the image is stored, and other messy heat reflections cannot be eliminated. Ensuring the correctness of the operation at the first time will avoid on-site operation errors. Adjust the focus carefully! If the overheating or overcold reflection of the background above or around the target affects the accuracy of the target measurement, try to adjust the focus or measurement orientation to reduce or eliminate the effect of reflection.
2. Choose the correct temperature measurement range
In order to get the correct temperature reading, be sure to set the correct temperature measurement range. When observing the target, fine-tuning the temperature span of the instrument will get the best image quality. This will also affect the quality of the temperature curve and the accuracy of temperature measurement at the same time.
3. Understand the maximum measurement distance
When measuring the target temperature, be sure to know the maximum measuring distance that can get accurate temperature readings. For the uncooled micro-heat type focal plane detector, in order to accurately distinguish the target, the target image through the thermal imager optical system must occupy 9 pixels or more. If the instrument is too far away from the target, the target will be small, and the temperature measurement result will not accurately reflect the true temperature of the target object, because the temperature measured by the infrared thermal imaging camera at this time averages the temperature of the target object and the surrounding environment. In order to get the most accurate measurement readings, please fill the field of view of the instrument as much as possible with the target object. Show enough scenes to be able to distinguish the target. The distance to the target should not be less than the minimum focal length of the thermal imager's optical system, otherwise, it cannot be focused into a clear image.
4. Determine the purpose of use
We need to clarify whether we only require clear infrared thermal images or require accurate temperature measurement at the same time. A quantified temperature curve can be used to measure the temperature in the field, and it can also be used to edit the significant temperature rise. Clear infrared images are also very important. However, if temperature measurement is required during the work process, and target temperature comparison and trend analysis are required, then it is necessary to record all target and ambient temperature conditions that affect accurate temperature measurements, such as emissivity, ambient temperature, wind speed, and direction, and humidity, Heat reflection source and so on.
5. Consider environmental factors
For example, when the weather is cold, you will find that most targets are close to the ambient temperature when performing inspections outdoors. When working outdoors, be sure to consider the effects of sun reflection and absorption on the image and temperature measurement. Therefore, some older models of infrared temperature cameras can only perform measurements at night to avoid the effects of the sun's reflection.
6. Ensure that the instrument is stable during the measurement process
In the process of taking an image, the image may be blurred due to the movement of the instrument. In order to achieve the best results, the instrument should be as stable as possible when freezing and recording images. When pressing the store button, try to ensure lightness and smoothness. Even slight instrument shaking may cause unclear images. It is recommended to use a support under the arm to stabilize it, or place the instrument on the surface of the object, or use a tripod to keep it as stable as possible.
We should adjust the instrument according to the actual scene and purpose in the process of using the temperature sensor cameras. If you feel that your help is not very effective after reviewing the above content, you can contact us for more detailed information and solutions.
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