Nortek Vectrino - Chapter 2 - Main Data; Vectrino Velocimeter Operating Principle

NORTEK VECTRINO VELOCIMETER
User Guide
11
Rev. C • 10.2004
CHAPTER 2
Main Data
The Vectrino Velocimeter measures water speed using the Doppler effect.
You hear the Doppler effect whenever a train passes by – the change in pitch you
hear tells you how fast the train is moving. The Vectrino uses the Doppler effect
to measure current velocity by transmitting a short pulse of sound, listening to
its echo and measuring the change in pitch or frequency of the echo.
The Vectrino velocimeter
operating principle. A pulse
is transmitted from the
centre transducer, and the
doppler shift introduced by
the refl ections from particles
suspended in the water, is
picked up by the 4 receivers.
Sampling volume