Water Measuring Weir

Model M38Y1 Magnetostrictive Water Weir Gauge is suitable for long-term water level measurement in weirs and flumes of rivers, lakes, reservoirs, dams, and other hydraulic structures. It serves as an effective monitoring device for tracking water level and flow rate changes. Adopting a magnetostrictive liquid level sensor as its core measuring component, the gauge boasts advantages including high resolution, excellent stability, reliable performance, fast response speed, and a long service life.

Key functions of the magnetostrictive water weir gauge include linear measurement, absolute position output, non-contact continuous measurement (ensuring no wear and tear), no requirement for sensor calibration or regular maintenance, multiple output signal options (RS485, voltage, current), and easy installation.

▋Structure and Working PrincipleThe magnetostrictive liquid level sensor mainly consists of a measuring rod, an electronic chamber, and a non-contact magnetic float sleeved on the measuring rod. The measuring rod, made of non-magnetic stainless steel, houses a magnetostrictive wire (waveguide wire) inside. During measurement, the electronic chamber emits an initial pulse, which propagates along the waveguide wire and generates a rotating magnetic field. When this rotating magnetic field interacts with the permanent magnetic field in the float, the magnetostrictive effect is triggered, causing torsional deformation of the waveguide wire. This torsion is detected by the electronic energy pickup mechanism and converted into a corresponding current pulse. The measurement circuit calculates the time difference between the initial pulse and the torsional pulse, thereby accurately determining the measured liquid level value.