PELTEK Vortex Flowmeters make use of principle called the von karman
effect. This principle sates that flow around a bluff body will generate
vortices on alternate sides of the bluff body. Vortex Flowmeters
contains a bluff body in the form of a piece of material that has broad,
flat front. This piece of material extends vertically into the flow
stream. Flow velocity is proportional to the number of vortices
generated. Flow rate is calculated by multiplying flow velocity with the
area of the pipe cross-section.