4. Spatial resolution
In short, the smaller the spatial resolution value, the higher the spatial resolution, the more accurate the temperature measurement, and the smaller the spatial resolution value, the smallest target can cover the pixels of the infrared thermal imager, and the test temperature is the real temperature of the measured target. If the spatial resolution value is larger, the spatial resolution will be lower, and the minimum target to be measured cannot completely cover the pixels of the infrared thermal imager, and the test target will be affected by its environmental radiation. The test temperature is the average temperature of the measured target and its surrounding temperature, and the value is not accurate enough.
5. Temperature stability
The core component of infrared thermal imager for sale is infrared detector. At present, there are two kinds of detectors: vanadium oxide crystal and polysilicon detector. The main advantage of vanadium oxide detector is that the measurement field of view (MFOV) is 1 and the temperature measurement is accurate to 1 pixel. For ASI (polycrystalline silicon) sensor, the MFOV is 9, that is, the temperature of each point is obtained based on the average of 3 × 3 = 9 pixels. The vanadium oxide detector has good temperature stability, long life and small temperature drift.
6. Combination of infrared and visible images
If the infrared image and visible image have combined display, it will reduce a lot of work. The unknown hot spots in infrared images can be judged according to the visible images. At the same time, automatic report generation will greatly reduce the operation time.