How to select electromagnetic flowmeter diameter and range? DN10-DN2000 sizing guide

Electromagnetic flowmeter sizing requires comprehensive consideration of pipe diameter, flow range, and velocity requirements. Key sizing factors include:

• Diameter Selection: Typically matches pipe diameter, Ecolor LGF series offers DN10-DN2000 full range
• Velocity Range: Recommended working velocity 0.3-10m/s, optimal velocity 1-3m/s
• Flow Calculation: Using Q=πD²V/4 formula, DN50 max flow ~70m³/h, DN200 max flow ~1100m³/h
• Turndown Ratio: LGF series achieves 1000:1 turndown ratio for wide flow variation
• Installation Requirements: Upstream straight pipe ≥5D, downstream ≥2D

Small diameters DN10-DN50 suit laboratory and low-flow applications, while large diameters DN100-DN2000 serve industrial pipelines. Selection must consider media properties, working pressure and temperature parameters.