The dredger electromagnetic flowmeter is used to guide the operation of the dredger to prevent blockage and suffocation. It is used together with the density measuring equipment to form a production meter, which provides decision data for construction operation and management, which is conducive to improving construction efficiency. The measuring medium is a liquid-solid two-phase fluid, which is different from the single medium in the usual sense, and the measurement difficulty is greatly increased. The electromagnetic flowmeter (EMF) is a meter that measures the flow of conductive fluid according to the law of electromagnetic induction . Compared with the existing flow meters, it has good linearity, high measurement accuracy, wide measuring range and wide application range, and strong corrosion resistance, which can solve problems that other flowmeters cannot easily solve, such as dirty flow, corrosion flow, etc. Measurement.
At present, most of the electromagnetic flowmeters used in dredgers in China have many problems such as zero drift, low conversion accuracy, unstable flow velocity, and easy to malfunction of air traffic control. In this regard, we conducted relevant research and proposed corresponding improvement measures. A new type of electromagnetic flowmeter specially designed for dredgers has been developed, which has been successfully applied on sucking dredgers and achieved good results. This paper introduces the electromagnetic dripmeter of the new dredger in detail through signal processing and air tube detection.