How do the Micro Motion Coriolis and the density transducer meter measure density?
Flow tube(s) inside the sensor vibrate at their resonant frequency, much like a spring with a weight attached to one end. The resonant frequency is a function of the mass of the fluid inside the tubes, which is a function of tube volume and fluid density. Thus, the resonant frequency is related to the fluid density inside. Therefore, for a given sensor, density of the fluid can be determined by measuring the resonant frequency of the sensor flow tubes. The Micro Motion TUTOR training program features an animated density theory demonstration.
