A flow measurement device developed based on the principle of Karman vortex street, which calculates flow rate by detecting the vortex frequency generated by fluid flowing through obstacles, and adapts to various media such as gas, liquid, steam, etc. It is widely used in industrial scenarios such as petroleum, power, and municipal engineering
Reliable structure and low operation and maintenance costs
No vulnerable parts: There are no movable mechanical parts such as impellers inside, and only rely on vortex generators such as triangular columns and piezoelectric sensors to work, reducing mechanical wear problems from the root, with an annual failure rate of less than 0.5%. For example, after replacing the orifice flowmeter in the municipal heating system, the maintenance frequency can be reduced from once a month to once a year.
Strong adaptability to protection: The watch body is often made of materials such as 316L stainless steel, which has corrosion resistance. Some models have an explosion-proof level of intrinsic safety type ia Ⅱ CT2-T5, with a protection level of IP65. Some submersible models can reach IP68, and can adapt to complex working conditions such as chemical explosion-proof workshops and underground wet pipelines. The calibration cycle is as long as two years, reducing the trouble of repeated calibration.
Accurate measurement and wide applicability
Stable accuracy and anti-interference: The typical measurement accuracy reaches ± 1% FS, and the measurement of volumetric flow rate is basically not affected by changes in fluid density, pressure, viscosity and other parameters. After using it in the circulating water system of a chemical plant, the error caused by viscosity changes can be reduced from ± 8% to ± 2%.
Wide range adaptation to multiple media: The range ratio can generally reach 10:1, and some models can be expanded to 30:1, covering different operating conditions from low flow rate to high flow rate. Simultaneously compatible with multiple media such as gas, liquid, steam, etc., it can measure liquids such as tap water and industrial circulating water, as well as natural gas, boiler steam, etc., without the need for separate instruments for different media.
Energy saving and worry free, compatible with intelligent control
Low energy consumption reduces operating costs: Adopting a straight through design without obstruction, the pressure loss is small, with a pressure loss coefficient Cd ≤ 2.6, which can reduce the energy consumption of conveying equipment such as water pumps and fans. Long term use can reduce the overall operating costs of industrial systems. And the battery powered type does not require an external power source and can work continuously for more than two years, further reducing energy consumption costs.
Easy integration into intelligent systems: Supports 4-20mA analog signal and pulse digital signal output, and can also be paired with RS485, NB IoT and other modules, making it easy to interface with industrial computers and cloud monitoring platforms. Not only can it achieve remote meter reading, but it can also be linked to the control system for flow regulation. For example, power plants use it to monitor boiler air volume and optimize combustion efficiency. A 300MW unit boiler used it to increase thermal efficiency from 88% to 92%.
Flexible installation, adaptable to multiple construction scenarios
It has multiple connection methods such as flange clamping, flange type, and insertion type. The full pipe type is suitable for DN25-DN300 pipelines, and the insertion type can be suitable for large-diameter pipelines from DN350 to DN1200. It can meet the installation requirements of small diameter pipelines for small-scale chemical equipment, as well as the measurement needs of large diameter pipelines such as municipal water supply main pipes. The installation does not require high construction space, and the later debugging is also relatively convenient.
