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Thermal imager technical indicators
- Jul 03, 2017 -

1, thermal sensitivity / NETD

The thermal imager can tell the ability of fine temperature difference, which affects the degree of detail of the image to a certain extent. The higher the sensitivity, the better the imaging effect, the more able to distinguish the specific location of the point of failure.

2, infrared resolution

Infrared resolution refers to the camera image of the camera, similar to the visible light, the higher the pixel the more clear the more delicate, the more pixels to obtain the same temperature data.

3, field of view / FOV

Horizontal and vertical angles of imaging on the detector. The greater the angle to see the wider, such as wide-angle lens. The smaller the angle to see the smaller, such as telephoto lens. So according to different occasions to choose the right lens is also very important.


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4, spatial resolution / IFOV

IFOV refers to the angle that can be imaged on a single pixel, because the angle is too small to be expressed in milliseconds. IFOV by the impact of the detector and the lens can be found in the same lens, the higher the pixel, IFOV smaller. On the contrary, the same pixel, the smaller the field angle, IFOV smaller. At the same time, the smaller the IFOV, the clearer the imaging effect.

5, temperature range

The device can measure the minimum temperature to the highest temperature range, the range can have multiple temperature ranges, need to manually set. Such as FOTRIC 226 temperature range is -20 ℃ ~ 650 ℃, the temperature range is -20 ℃ ~ + 150 ℃, 0 ℃ ~ 350 ℃ and 200 ℃ ~ 650 ℃. As far as possible to choose to meet the requirements of the small range of testing, if the test 60 ℃ target, select -20 ~ 150 ℃ range than the choice of 0 ~ 350 ℃ range, the thermal image is more clear.

6, full radiation thermal video stream

Save the video stream of each pixel temperature data per frame, the full radiation video can carry on the post-temperature change analysis, also may carry on any temperature analysis to each frame picture.