The HUALIU intelligent magnetoelectric flowmeter is a velocity-type flow instrument that combines the advantages of the vortex flowmeter and the electromagnetic flowmeter, with no moving parts and stable, reliable metering. It can measure the volumetric flow of various conductive liquids, including strongly corrosive liquids such as acids, alkalis and salts, as well as pulp, slurry, wastewater and solid-liquid two-phase suspensions. It is widely used in the petroleum, chemical, metallurgical, textile, food, pharmaceutical and papermaking industries, as well as in environmental protection, municipal and water conservancy construction.

The product adopts advanced single-chip microcontroller technology and new micro-power technology, featuring a simple and rugged structure, low pressure loss (about 1/4 to 1/2 that of an orifice flowmeter), a wide turndown ratio and no zero drift, making it easy to install and maintain. The single-bluff-body or dual-bluff-body design effectively overcomes the problems of low signal-to-noise ratio and poor anti-interference performance under small-flow and low-velocity conditions. Together with a high-performance amplifier circuit, it achieves precise and stable measurement under small-flow, low-velocity conditions. With strong anti-vibration performance, it is suitable for applications where the pipeline is subject to vibration. The complete instrument has low power consumption and adopts E²PROM data storage technology to prevent data loss when the battery is replaced or power is suddenly lost.

The instrument operates on Faraday's principle of electromagnetic induction: when the medium flows past a trapezoidal-column vortex-shedding body perpendicular to the flow direction, two rows of regularly arranged vortices are alternately shed and released on its downstream sides, cutting the magnetic lines of force to induce a frequency signal proportional to the flow rate, which is accurately detected after computation and processing by the detector's single-chip microcontroller. The product supports local display of instantaneous flow, cumulative total and daily flow, and can provide pulse, 4~20mA analog or RS-485 communication output, with an optional solar-powered version.