How do you design a measurement system for multi-phase interface detection in separators?

Multi-phase interface detection design: For oil/water/emulsion interfaces in separators, use guided wave radar (GWR) with interface detection capability or multiple displacer transmitters. Design considerations: density contrast (minimum delta SG 0.05 for reliable detection), emulsion layer thickness, process temperature effects on density, probe wetted material selection (corrosion, coating), configuration of multiple level points (total level, oil/water interface, high-high alarm). Combine with conductivity probes for water breakthrough detection. Validate with external reference during commissioning. Nuclear density profilers provide continuous interface profile for complex applications.