How to use infrared thermal imager correctly?

The use of infrared thermal imager includes the following steps:

1, adjust the focal length, NEC infrared thermal imager can focus automatically;

2. Choosing the correct temperature measuring range, NEC infrared thermal imager can automatically adjust the temperature measuring range; It is worth pointing out that NEC infrared thermal imager can automatically focus and adjust the temperature as long as it holds the focus key for 5 seconds.

3. Know the maximum measuring distance

4. Is it only required to produce a clear infrared thermal image, or is it required to measure the temperature accurately at the same time?

5. Single working background,

The best background is only the measured object;

6. Ensure that the instrument remains stable during measurement.

The specific steps are as follows:

1, adjust the focus.

After the infrared image is stored, the image curve can be adjusted, but the focal length cannot be changed and other messy thermal reflections cannot be eliminated. Ensuring the correctness of the operation at the first time will avoid mistakes in field operation. Adjust the focus carefully! If the overheating or supercooling reflection of the background above or around the target affects the measurement accuracy of the target, the focal length or measurement orientation should be adjusted as much as possible to reduce or eliminate the reflection influence.

2. Choose the correct temperature range.

Do you know the temperature measurement range of the measured object on site? In order to get the correct temperature reading, please make sure to set the correct temperature 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 temperature curve and the accuracy of temperature measurement.

3. Know the maximum measuring distance

When measuring the target temperature, be sure to know the maximum measuring distance at which accurate temperature readings can be obtained. For uncooled micro-thermal focal plane detectors, in order to accurately distinguish targets, the target image passing through the optical system of thermal imager must occupy 9 pixels or more. If the instrument is too far away from the target, the target will be very small, and the temperature measurement results will not correctly reflect the real temperature of the target object, because the temperature measured by the infrared thermal imager is the average of the temperature of the target object and the surrounding environment. In order to obtain the most accurate measurement reading, please fill the field of vision of the instrument as much as possible. Only by showing enough scenes can we distinguish the targets. The distance from the target can not be less than the minimum focal length of the optical system of the thermal imager, otherwise it can not be focused into a clear image.

4. Is it only required to produce a clear infrared thermal image, or is it required to measure the temperature accurately at the same time?

What's the difference? The quantitative temperature curve can be used to measure the field temperature and edit the significant temperature rise. Clear infrared images are also important. However, if it is necessary to measure the temperature and compare the target temperature during the work, it is necessary to record all the target and ambient temperatures that affect the accurate temperature measurement, such as emissivity, ambient temperature, wind speed and direction, humidity, thermal reflector and so on. NEC infrared thermal imager can modify the environmental parameters in the machine and 9500Pro software.

5. Single work background

For example, when testing outdoors in cold weather, you will find that most targets are close to the ambient temperature. When working outdoors, please be sure to consider the influence of the reflection and absorption of the sun on the image and temperature measurement. Therefore, some old infrared thermal imagers can only measure at night to avoid the influence of solar reflection.

6. Ensure that the instrument remains stable during measurement.

At present, all long-wave NEC infrared thermal imagers can reach the frame rate of 60Hz, so in the process of shooting images, the images may be blurred because of the movement of the instruments. In order to achieve the best effect, the instrument should be as stable as possible when freezing and recording images. When you press the store button, you should try your best to make it gentle and smooth. Even a slight shaking of the instrument may cause the image to be unclear. It is suggested to fix it with a bracket under the arm, or put the instrument on the surface of the object, or try to keep it stable with a tripod.