Steel enterprises are inseparable from the various production links of water, especially the power area of the company, responsible for blast furnaces, steelmaking, steel rolling and other production of different water quality, water consumption is large, do a good job of water resources measurement management is of great significance to the development of the enterprise, and there are links of the process system of water supply, and includes industrial water, water reuse, effectively supporting the production, recycling, environmental protection and other aspects Link. Fuji portable ultrasonic flowmeter is a new type of online flow measurement instrument, its compact, convenient, practical, can achieve online no cut real-time flow comparison, its economy and timeliness is very obvious, through its traceability calibration, and then use it as a standard, fine operation, take its advantages, avoid its shortcomings, large enterprises large water transmission pipe metering balance measurement Management, has a positive significance. By comparison, the online water flow meter itself is determined whether there is out-of-tolerance phenomenon. On the one hand, it avoids the impact of stopping production and reducing production caused by instrument verification, improves production capacity and reduces verification costs; On the other hand, it provides timely and effective operation data for the modern management of enterprises. The measurement and management of water resources is of great significance to the development of enterprises. However, because of the requirements of the continuous and uninterruptible nature of the operation, the non-ferrous industry often cannot achieve the removal of the water flow meter for inspection, nor can it achieve the installation of all standby flow meters for reference comparison. These traditional methods not only affect the normal production, increase the extra workload, but also increase the economic burden of enterprises, so it is necessary to improve the timeliness and economy of water flow measurement in non-ferrous enterprises, and promote the effective management of water balance in enterprises