8C3B

The measuring system operates based on the Coriolis measurement principle. The Coriolis force is a force exerted on an object moving in a straight‑line path 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 oscillating system The magnitude of the Coriolis force depends on the mass \(\Delta m\) of the moving object and its radial velocity v, namely the mass flow rate. Instead of a rotating system with constant angular velocity \(\omega\), the sensor adopts oscillating measuring tubes.Fluid flows through the sensor. Two parallel measuring tubes inside the sensor oscillate in antiphase, similar to a tuning fork. Coriolis force is generated within the measuring tubes and creates a phase shift in tube oscillation: • At zero flow (fluid at rest), both measuring tubes oscillate in‑phase with no phase difference. • Mass flow accelerates oscillation at the inlet side of measuring tubes and decelerates oscillation at the outlet side, which produces a phase shift.A higher mass flow rate results in a larger phase shift. Electromagnetic phase sensors capture the oscillation phase at the inlet and outlet of the measuring tubes. Antiphase oscillation of the two measuring tubes guarantees system balance. The measurement principle is completely independent of temperature, pressure, viscosity, electrical conductivity and fluid properties.

Low‑flow measurement Compact construction

Cubemass C is the ideal choice for ultra‑low‑flow measurement in skid‑mounted systems, test benches and industrial robot applications. Its measuring accuracy remains fully unaffected even under high‑pressure operating conditions and variable flow rates. When paired with the compact transmitter, Cubemass C 300 features flexible operation and convenient system integration: improved connection design allows wiring on one side of the instrument and supports remote display. Heartbeat Technology ensures accurate measurement and compliance verification. • The measuring principle is independent of physical fluid properties (e.g. viscosity and density) • High‑accuracy measurement for liquids and gases at ultra‑low flow rates