D8EB

The measuring system operates on the Coriolis force measurement principle. The Coriolis force acts on an object moving in a straight line within a rotating system. Fc = 2 · ∆m (ν · ω) Fc = Coriolis force ∆m = Mass of the moving object ω = Angular velocity ν = Radial velocity of the object in the rotating or vibrating system The magnitude of the Coriolis force depends on the mass Δm of the moving object and its radial velocity v, namely the mass flow rate. The sensor uses vibrating measuring tubes instead of the constant angular velocity ω of a rotating system. Fluid flows through the sensor. Two parallel measuring tubes inside the sensor vibrate in opposite phases, similar to a tuning‑fork vibration. Coriolis force is generated in the measuring tubes, which creates a phase shift in tube vibration: • At zero flow (static fluid), the two measuring tubes vibrate in phase with no phase shift. • Mass flow accelerates vibration at the inlet of the measuring tubes and decelerates vibration at the outlet, producing a phase shift. A larger mass flow rate results in a greater phase shift. Electromagnetic phase sensors record the vibration phases at the inlet and outlet of the measuring tubes. Counter‑phase vibration of the two measuring tubes ensures system balance. The measuring principle is completely independent of temperature, pressure, viscosity, conductivity and fluid properties.

LPG application

LPG mass is dedicated to LPG flow measurement for decanting and truck loading. Equipped with intelligent conversion functions, it performs temperature measurement simultaneously to realize volume correction directly on‑site. LPG mass is the optimal choice for system integrators, skid manufacturers and equipment manufacturers. • Measuring principle is independent of fluid physical properties (e.g. viscosity and density). • High‑accuracy LPG measurement for refuelling and distribution applications.