Dopplerárammér
Dopplerárammér is a device used to measure fluid flow velocity. It operates based on the Doppler effect, a phenomenon where the frequency of a wave changes when the source or observer is moving. In the case of a Dopplerárammér, sound waves or electromagnetic waves are transmitted into the fluid. These waves then reflect off moving particles within the fluid, such as suspended solids or gas bubbles.
As these particles move towards the transmitter, the reflected waves have a higher frequency. Conversely, if
Dopplerárammérs are non-invasive, meaning they do not require direct contact with the fluid being measured, which