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One, pixel
First of all, to determine the pixel level of the infrared camera, most of the infrared camera's level is related to the pixel. The relatively high-end product pixel in the civilian infrared camera is 640*480=307,200. The infrared picture taken by this high-end infrared camera is clear and delicate. The minimum size measured at 12 meters is 0.5*0.5 cm; the mid-range infrared thermal image The instrument's pixel is 320*240=76,800, the minimum size measured at 12 meters is 1*1cm; the low-end thermal imager's pixel is 160*120=19,200, and the minimum size measured at 12 meters is 2*2cm . The higher the visible pixel is, the smaller the minimum size of the target that can be shot is. The following figure shows the comparison of three levels of pixel infrared thermal images: 
Second, the temperature range and the analyte <br> <br> determined temperature range for the temperature range of the measured object to select appropriate temperature infrared imaging section. At present, infrared thermal imagers on the market are mostly divided into several temperature ranges, such as -40-120°C and 0-500°C. It is not that the longer the temperature span is, the better, and the span of the temperature file is relatively accurate. In addition, when an infrared camera needs to measure objects above 500°C, it must be equipped with a corresponding high-temperature lens.
Third, the temperature resolution <br> <br> temperature resolution reflects an infrared camera temperature sensitivity, temperature resolution thermal imager smaller temperature changes in the perception of the more obvious, try to choose the choice of this parameter Small value product. The main purpose of the infrared camera to test the measured object is to find out the temperature fault point through the temperature difference, and it is not very meaningful to measure the temperature value of a single point, mainly to find the relative hot spot through the temperature difference, and play the role of pre-maintenance. .
Fourth, the spatial resolution <br> <br> Briefly, the spatial resolution of the spatial resolution the higher the smaller the value, the more accurate temperature measurement, the spatial resolution value is smaller, the minimum test target may cover Infrared The measured temperature of the pixel is the true temperature of the target being measured. If the spatial resolution value is larger, the spatial resolution is lower, the minimum target to be measured cannot completely cover the pixels of the infrared camera, and the test target will be affected by its environmental radiation. The test temperature is the target to be measured and its ambient temperature. The average temperature is not accurate enough. See the figure below for comparison: 
The left picture shows high spatial resolution, and the temperature of the measured point is more accurate; the right picture has low spatial resolution, and the test temperature is the average value of the measured point and its ambient temperature, and the temperature measurement is not accurate.
Fifth, the temperature stability of the core member <br> <br> infrared camera as an infrared detector, there are mainly two detectors, i.e., vanadium oxide and polysilicon crystal detector. The main advantage of the vanadium oxide detector is that the MFOV (Measurement Field of View) is 1 and the temperature measurement is accurate to 1 pixel. Amorphous Silicon sensors have a MFOV of 9, which means that the temperature at each point is averaged based on 3 x 3 = 9 pixel points. Vanadium oxide detectors have good temperature stability, long life, and low temperature drift.
Sixth, infrared and visible light image combination function
If the infrared image and the visible light image are combined and displayed, a lot of work is reduced, and the unknown of the hot spot in the infrared image can be determined according to the visible light image. At the same time, the automatic generation of the report will also greatly reduce the operation time.
Seven, after-sales service support and regular calibration
Infrared cameras use blackbody correction sources every few years for temperature calibration to ensure the accuracy of temperature measurements. This requires suppliers to have strong aftermarket capabilities and calibration service conditions. FLIR has opened branches in Shanghai, Beijing, Guangzhou, and Chengdu in China, and has a China after-sales service center in Shanghai to provide after-sales service and calibration services for Chinese customers.
Eight, professional training
Thermal imaging cameras have many operating techniques. Analysing infrared images to improve production quality requires professional reporting support. This requires suppliers to provide professional and high-quality training. Every year, the FLIR infrared training center (ITC) will Programs are offered in four major cities in China (Beijing, Shanghai, Guangzhou, Chengdu), and ITC has opened training courses in more than 50 countries around the world. It can provide Level 1, Level 2 and Level 3 courses, advanced application courses and online teaching courses. , customized solutions and on-site services.
Selecting the Eight Elements of a Suitable Infrared Imager
The infrared thermal imager uses an infrared detector and an optical imaging objective lens to receive the infrared radiation energy distribution pattern of the target to be reflected on the photosensitive element of the infrared detector so as to obtain an infrared thermal image, which is a heat image and the surface of the object. Distribution field corresponds. In layman's terms, an infrared camera converts the invisible infrared energy emitted by an object into a visible thermal image. Infrared cameras can be used in scientific research, electrical equipment, electrical and mechanical equipment, construction inspection, military and security, and how do you choose an infrared thermal imager that suits your application needs?