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1. What is the use of ultrasonic open channel flowmeter? Ultrasonic open channel flowmeter is mainly used for the installation acceptance and daily operation comparison test of open channel flowmeter. By measuring the liquid level height in the open channel and combining it with the geometric characteristics of the open channel weir, the flow rate flowing through the open channel is calculated. Core function: The device uses high-precision ultrasonic level sensors to measure the liquid level height in open channels in real time, and automatically calculates the flow value based on the flow calculation formula corresponding to the built-in weir type (such as Bachers groove, triangular weir, rectangular weir, etc.). During the measurement process, the liquid level data is displayed synchronously with the flow rate results, supporting a fast measurement frequency of 20 times per second to ensure real-time data. Image: Ultrasonic open channel flowmeter calculates flow rate based on the relationship between liquid level height and weir geometry. Application scenario: Environmental law enforcement: used for monitoring the flow rate of enterprise sewage outlets to verify the authenticity of sewage data. Environmental monitoring: Monitor water flow in natural open channels such as rivers and canals to assist in water quality analysis. Third party testing: providing traffic comparison testing services for environmental monitoring stations and testing companies. Research institutions: support academic work such as hydrological research and model validation. Enterprise self inspection: Assist factories, sewage treatment plants and other units in verifying the accuracy of fixed flow meters. Technical advantages: high-precision measurement: flow error ≤ ± 1%, liquid level error ≤ 0.5mm, resolution up to 0.01mm. Portable design: adopting a portable box structure, high integration of accessories, matched with an ultra stable tripod, suitable for complex outdoor environments. Intelligent operation: equipped with a high brightness LCD touch screen, supporting a guided graphic interface, and can be operated without professional training. Data management: Equipped with a large capacity lithium battery (with a battery life of over 14 hours), it can store over 10000 pieces of data and supports USB export and Bluetooth printing. Standard compatibility: Built in dual systems, measurement modes can be selected according to HJ354-201
9, JJG711-1990 and other standards to meet compliance requirements. Image: Equipment conducting flow comparison test in outdoor open channels. Technical parameter supplement: Flow measurement range: 0-40 m3/s, covering most open channel scenarios. Sensor Range: Standard 1 meter, optional 2 meters, suitable for different depth channels. Environmental adaptability: Operating temperature -10~50 ℃, supporting optional geographic positioning function. This device uses non-contact ultrasonic measurement technology to avoid the interference of conventional contact sensors on fluids. With its portability, high precision, and ease of use, it has become an important tool in the field of open channel flow monitoring.
2. Domestic and foreign manufacturers of ultrasonic flow meters
Foreign: GE, Siemens, Cologne, Fuji, Yokogawa Domestic: Dalian Longhan Technology Dalian Haifeng Instrument Tangshan Huizhong Tangshan Meilun