The SMC coriolis mass flowmeters,uses two parallel arranged pipes which are rotated at their resonant frequency by coils. Any mass flow

passsing through the tubes will generate coriolis forces which appear whenever a mass moves radially in a rotating system. The forces

have opposed effects on the in- and outlet side, they do slighty deform the pipes. The excursion of the pipes is detected by sensors on the

in- and outlet side. The phase shift between the rotational frequencies of both pipes is proportional to the mass flow rate. The resonant

frequency of both pipes changes in accordance with the density of the medium. This effect determines the density. Using one sensor

density and temperature can also be measured.The extent of deformation of the pipes depends on temperature.Therefore the temperature

is measured for compensation purposes. Using only one sensor primary values as mass flow, density and temperature can be measured.

Conversions allow for calculation of further values like flow volume and concentration Cycle of excursion (simplified)