8S1C

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, i.e. the mass flow rate. Instead of a rotating system with constant angular velocity \(\omega\), the sensor uses 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 generated in the measuring tubes creates 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 ensures 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 features an advanced hygienic design as an industry‑optimized measuring solution from Endress+Hauser. It meets all hygienic requirements and is suitable for installation in food and beverage industry applications. Equipped with today’s smallest transmitter housing, it delivers full performance within minimal dimensions. Designed for installation in confined spaces, Promass S 100 is the optimal choice for system integrators, skid builders and equipment manufacturers. • Measuring principle independent of fluid physical properties (e.g. viscosity and density) • Dedicated flowmeter for hygienic environments requiring optimum cleaning performance