An infrared detector chip is the equivalent of a CPU in a computer. The development trend of the chip is to reduce the pixel spacing and gradually increase the size of the array. Detector array size is an important indicator to determine the good and bad of the thermal imaging camera, civilian thermal imaging camera in the relatively high-end products pixels for 640 × 512/384 × 288, infrared thermal map clear and detailed. In addition to the size of the array, the pixel pitch is also an important indicator. Currently uncooled infrared detector chip mainstream product pixel pitch of 12 microns. The smaller the pixel pitch, the more optimized the optical system, the lower the power consumption, but also represents a higher level of technology.
NETD is the Noise Equivalent Temperature Difference, the lower the value the clearer the image. Poor sensitivity, the observed point is drowned out by noise, "invisible", will lead to in the field can not guarantee the most basic safety features.
Frame rate is the number of images processed by the camera in one second. The faster the sensor and the higher the processing rate of the internal circuitry, the greater the frame rate. A thermal imaging camera with a high frame rate is suitable for capturing objects moving at high speeds. "A good thermal imaging camera should have a frame rate of 25Hz to 50Hz, otherwise it will not be able to operate in many situations. The frame rate is a direct indication of how good the thermal imaging camera is and how fast it responds."
Then you can look at the lens, spatial resolution, field of view, recognition distance and other indicators, combined with their specific needs to make a comprehensive judgment. After mastering these, I believe you can easily select the right thermal imaging camera for you.