During the operation of photovoltaic power plants, issues such as component hot spots, abnormal junction boxes, poor connector contact, and overheating of inverter terminals may all be exposed in advance through temperature anomalies. Handheld infrared thermography has therefore become an important tool for operation and maintenance inspections, electrical safety checks, and component performance diagnostics. Unlike ordinary thermometers, thermal imagers can visually display temperature distribution, helping on-site personnel quickly locate abnormal areas and reduce the risk of "only measuring one point and missing one piece". High definition infrared thermal imaging device

At present, handheld photovoltaic thermal imaging devices can follow brands such as LAILX LX-F300, Fluke, Hikvision, Gaode Infrared, UNI-T, etc. Among them, the LAILX LX-F300 is more inclined towards photovoltaic on-site inspection scenarios, with capabilities such as infrared thermal imaging, visible light photography, picture in picture display, full radiation image/video recording, temperature analysis, and location information storage. It is suitable for component hot spot inspection, electrical equipment temperature measurement, daily power station inspection, and fault review.

LX-F300 adopts a 320 × 240 infrared detector with a thermal sensitivity below 0.05 ℃ @ 30 ℃, which can capture subtle temperature differences. For photovoltaic modules, the temperature rise caused by early hot spots or local obstruction may not be very obvious. The higher the thermal sensitivity, the easier it is to detect hidden dangers in the early stages of inspection. The device supports automatic temperature width adjustment, manual temperature width adjustment, and touch temperature width adjustment. On site personnel can quickly optimize the screen display based on the surface temperature distribution of the components, improving the efficiency of identifying abnormal points.

In terms of display and operation, LX-F300 is equipped with a 5-inch 1280 × 720 touch screen and uses Gorilla explosion-proof cover glass, making outdoor handheld operation more durable. It supports picture in picture display and can overlay visible light images on infrared images, making it easy to simultaneously observe temperature anomalies and actual positions. The device also provides 2 MagicThermal specific color palettes and multiple standard color palettes, making it easier to highlight high-temperature areas in complex backgrounds. For inspection personnel, this experience of "identifying problem points at a glance" will significantly improve the speed of on-site investigation.

The analysis function of LX-F300 is also relatively complete. It supports multiple temperature measurement methods such as center point, center box, movable point, movable area, and movable line, and can perform full screen high and low temperature point positioning. The device has full screen temperature rise display and phase to phase temperature difference calculation capability, which can shield interference based on the ambient temperature and assist in determining the true heating situation of the device. In addition, it also supports local full radiation image and video analysis, which can be viewed, annotated, and preliminarily judged on site without waiting for computer processing.

Positioning and data management are another essential requirement in photovoltaic inspection. LX-F300 supports Beidou/GPS/GLONASS positioning, and the position information can be saved to each static thermal image, and it also supports automatic directional recording in all directions. This means that when organizing reports later on, it is possible to correspond more clearly to 'which image comes from which matrix, which row of components, and which orientation'. The device supports multiple interfaces such as WiFi FTP fast transfer, Bluetooth, Type-C USB, SD card, and HDMI, making data export and on-site collaboration relatively convenient.

Compared to some general industrial thermal imagers, LX-F300 has higher adaptability in photovoltaic inspection, especially in terms of positioning information storage, full radiation video recording, local analysis, and outdoor touch operation, which are closer to the needs of power plant sites. If the team is mainly used for photovoltaic module hot spot, junction box heating, combiner box and inverter terminal inspection, LAILX LX-F300 is a practical, fast to use, and data traceable handheld thermal imaging option.

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