Jiangsu Jingwei JW-F04 Portable Irradiance Meter: Accurately Capture Light Energy Data, Empower Photovoltaic Energy Efficiency and Fine Management

June 15, 2026
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Jiangsu Jingwei JW-F04 Portable Irradiance Meter: Accurately Capture Light Energy Data, Empower Photovoltaic Energy Efficiency and Fine Management

Solar irradiance is the core basic data for evaluating the power generation of photovoltaic power plants, optimizing system design, and formulating operation and maintenance strategies. The accuracy of irradiance measurement directly determines the accuracy of photovoltaic power plant power generation prediction, the rationality of component selection, and the efficiency of operation and maintenance. In the context of the transformation of the photovoltaic industry towards refinement and intelligence, high-precision, portable, and multi parameter synchronous measurement irradiance meters have become essential equipment for the operation, maintenance, and design of photovoltaic power plants. Jiangsu Jingwei Technology Co., Ltd. relies on advanced sensing technology and environmental compensation algorithms to independently develop the JW-F04 portable irradiance meter. With high-precision measurement, multi parameter synchronous acquisition, strong environmental adaptability, and long-range intelligent management as its core, it provides accurate data support for photovoltaic energy resource evaluation, power plant performance monitoring, and efficiency analysis. Portable irradiation system dosimeter


The JW-F04 portable irradiance meter adopts a secondary standard spectral response sensor and multi-channel optical detection technology, and is a high-precision measurement device specially developed for photovoltaic system light energy evaluation. The device can synchronously measure four core parameters: total solar radiation, scattered radiation, reflected radiation, and effective irradiance of photovoltaic modules, accurately capturing dynamic changes in solar energy resources. The measurement range is 0-2000W/㎡, with a resolution of 0.1W/㎡ and a measurement accuracy of ≤± 2%, meeting the national second level metrology standard. The data accuracy far exceeds that of ordinary equipment in the industry. At the same time, equipped with professional environmental compensation algorithms, it can automatically eliminate the influence of temperature drift, spectral mismatch, and angle response errors on measurement results. It can output stable and accurate measurement data under complex weather conditions such as extreme temperatures from -30 ℃ to 70 ℃, different lighting angles, rainy weather, haze, and strong light, solving the industry problems of poor environmental adaptability and large data fluctuations of traditional equipment. In addition, the device supports rapid response measurement with a response time of ≤ 100ms, which can accurately capture short-term light fluctuations and meet the dynamic energy efficiency monitoring needs of photovoltaic power plants.


Lightweight and portable design allows light energy monitoring to break through scene limitations. The JW-F04 machine adopts an integrated lightweight structure, and the shell is made of high-strength aluminum alloy material, which is sturdy and durable with a weight of less than 5kg. It has a dustproof and waterproof rating of IP65 and can resist outdoor dust and rainwater invasion. Equipped with a portable suitcase and compact storage, it can be easily carried by a single person to any location in the power station, suitable for mobile monitoring of complex terrains such as mountains, rooftops, and water surfaces. Whether it is the survey of solar energy resources and site selection evaluation for newly built power stations, component plane irradiation monitoring and system efficiency calibration for operating power stations, or the collection and analysis of solar energy data by scientific research institutions, JW-F04 can be flexibly adapted to achieve efficient monitoring in multiple scenarios.


The battery life and intelligent data management enable JW-F04 to meet the long-term monitoring and efficient operation and maintenance needs of the photovoltaic industry. The device is equipped with a large capacity lithium battery that supports 150 hours of ultra long energy storage power supply, meeting the long-term field monitoring needs; Simultaneously supporting external power supply, it can achieve 24-hour uninterrupted monitoring and adapt to long-term monitoring scenarios of power stations. Built in data analysis platform, capable of real-time recording and storage of measurement data, supporting local data query, one click export, and wireless transmission. It can seamlessly integrate with the power station monitoring platform to build a complete photovoltaic environment monitoring network. In addition, the device has a built-in data calibration function that can automatically calibrate sensors on a regular basis, ensuring long-term measurement accuracy, reducing manual calibration costs, and lowering maintenance workload.


With its core advantages of high precision, strong adaptability, portability, high efficiency, and intelligent management, the JW-F04 portable irradiance meter has been widely used in photovoltaic power plant light energy resource assessment, site selection survey, system design optimization, power generation prediction, component selection matching, system efficiency calibration, operation and maintenance fault diagnosis, and other full scenarios, covering various photovoltaic projects such as household, industrial and commercial, large-scale ground, and fishery photovoltaic complementarity. Accurate irradiation data can help photovoltaic companies optimize component installation angles, improve system power generation efficiency, predict abnormal power generation in advance, locate the cause of faults, and assist photovoltaic power plants in achieving refined operation and maintenance, cost reduction, and efficiency improvement.


Jiangsu Jingwei Technology, as an innovative enterprise in the field of photovoltaic environmental monitoring, always adheres to the product concept of "precise monitoring, data empowerment, and efficient operation and maintenance". Starting from the actual needs of users, it continues to overcome the technical difficulties of photovoltaic environmental monitoring. The successful development of JW-F04 portable irradiance meter has filled the gap of high-precision portable multi parameter irradiance meter in China, replacing imported products with domestically produced and cost-effective products, significantly reducing monitoring costs for photovoltaic enterprises, and promoting high-quality development of the photovoltaic industry. In the future, Jiangsu Jingwei Technology will continue to focus on innovation in photovoltaic environmental monitoring technology, continuously optimize product performance, expand application scenarios, and provide better products and services to safeguard the refined management and efficient power generation of global photovoltaic power plants.


Portable irradiation system thermometer, portable photovoltaic PR testing system, photovoltaic performance evaluation tool

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