Coriolis is one of the most common flow measuring principles for direct mass flow, density, viscosity measurement with high accuracy and repeatability. However, the performance is only valid for the single-phase fluids. We can see inhomogenous fluids, entrained gas & liquids in many applications. These Coriolis flowmeters fall in difficult situations and decrease the performance. With our innovative technologies, Endress+Hauser has introduced Promass Q which can overcome these challenges.