8S5B

The measuring system operates on the Coriolis 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 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 employs oscillating measuring tubes.Fluid flows through the sensor. Two parallel measuring tubes inside the sensor oscillate in antiphase, similar to a tuning fork. The Coriolis force generated in the measuring tubes produces a phase shift in tube oscillation: • At zero flow (fluid at rest), the two measuring tubes oscillate in‑phase with no phase difference. • Mass flow accelerates oscillation at the inlet of the measuring tubes and decelerates oscillation at the outlet, generating a phase shift.The higher the mass flow rate, the greater the phase shift. Electromagnetic phase sensors record the oscillation phase at the inlet and outlet of the measuring tubes. Antiphase oscillation of the two measuring tubes guarantees system balance. The measuring principle is completely independent of temperature, pressure, viscosity, electrical conductivity and fluid‑specific properties.

Food and beverage industry applications

Promass S 500 single‑tube mass flowmeter features easy‑to‑clean and self‑draining properties, complying with stringent hygienic requirements for the food and beverage industry. The innovative remote transmitter design ensures installation flexibility and operational safety under demanding process conditions. Equipped with multiple communication options including up to 4 configurable I/Os, fieldbus, industrial Ethernet and WirelessHART, it enables seamless system integration. The integrated Heartbeat Technology ensures continuous compliance. • Measuring principle independent of fluid physical properties (e.g. viscosity and density) • Dedicated flowmeter for hygienic applications requiring optimum self‑draining performance