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1. Tangshan Dafang Huizhong Instrument Co., Ltd. has been focusing on flow measurement for 39 years - Tangshan Dafang Huizhong Instrument Co. For forty years, we have been deeply involved in the research and manufacturing of mining flow meters and supporting systems. We are a member of the fourth council of the Hebei Instrument Industry Association, and our executive director and general manager have been elected as the vice president of the association. Core products and technologies: A series of core products with independent intellectual property rights, including ultrasonic flow meters, electromagnetic flow meters, 3D radar level scanners, online ash meters, etc., widely used in coal mines, water conservancy, power, metallurgy, chemical industry, environmental protection and other fields. Multiple technologies have filled the domestic gap, accumulating nearly a hundred patents and software copyrights, and participating in the development of industry and local standards such as "Mining Flow Sensors". System integration and transformation: In recent years, we have actively laid out digital fields such as intelligent water management systems and transparent pipeline monitoring systems for mines, promoting the upgrading of traditional instrument manufacturing to intelligence. Its high-precision and high stability solutions are helping to continuously increase its market share in China. Industry contribution and responsibility: As a newly appointed director unit, the company relies on the scientific research advantages of China Coal Science and Technology, and collaborates with member units of the association to deepen technology research and development, standard setting, and market expansion cooperation, jointly solving industry problems. For example, the ongoing construction project of a liquid metal sensor production base has made breakthroughs in sensor material innovation, providing a stable, accurate, and efficient online detection system for steel enterprises. Future development direction: Focus on the "dual carbon" goal, accelerate the promotion of intelligent water management, energy monitoring and other system solutions; Deepen strategic cooperation with large state-owned enterprises such as national energy, promote the integration of instrument products with 5G and big data technologies, and inject new momentum into the high-quality development of the instrument industry in Hebei Province. 2. The poor accuracy of ultrasonic flow meters may be caused by signals, flow rates, and other factors - Tangshan Dafanghui Instrument Co., Ltd ..
Poor accuracy of ultrasonic flow meters may be caused by signal or flow problems. The specific reasons and solutions are as follows:
1. Poor accuracy caused by signal problems. The reasons for poor signal are: the sound wedge surface of the sensor is not aligned with each other, the sensor is scaled, and the sensor is inserted too deeply or too shallowly. The gas content in the pipeline is too high (horizontal pipeline, concentrated in the top pipeline) or there is no water. The input pipe outer diameter does not match the actual pipe outer diameter. Solution: Adjust sensors and clean dirt for channels with weak signals. Exclude pipeline gas and adjust sensors for weak signal channels. Modify the outer diameter of the pipeline. Reason for no signal: The installation distance of the sensor is too far from the set distance of the instrument. The gas content in the pipeline