Which Flow Meter Requires a Conductive Fluid? The Need to Develop Electromagnetic Flow Meters for Low Conductivity ≥1 μS/cm
When selecting a flow meter for industrial or laboratory applications, one critical factor to consider is the conductivity of the fluid being measured. Among the various flow measurement technologies, electromagneticflow meters (EMFs) stand out as devices that *explicitly require a conductive fluid* to operate. But why is conductivity so important, and why is there a growing push to develop EMFs capable of handling fluids with low conductivity ( ≥ 1 μ S/cm)? Let ’ s dive in. Which Flow Meter Requires a Conductive Fluid? Electromagnetic flow meters (EMFs) rely on Faraday ’ s Law of Electromagnetic Induction to measure flow. Here ’ s how it works: 1. A magnetic field is generated across the flow tube. 2. As the conductive fluid moves through the field, it generates a voltage proportional to its velocity. 3. Electrodes detect this voltage, which is then translated into a flow rate. Why conductivity matters: For this ...