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General Description
The DVZ series vortex flowmeters
are the perfect solution for applications
where reliability and low cost are
desired. The DVZ senses the flowrate of
low viscosity liquids using the vortex
shedding principle. A small obstruction
called a bluff body is placed in the flowpath.
As fluid flows across the bluff body,
small low-pressure areas called vortices
are created just behind the bluff body.
The position of the vortices alternates to
either side of the bluff body in a uniform
pattern. The frequency of the vortices shift
is directly proportional to flowrate. This
shift in the vortices is detected by a very
sensitive pressure sensor and processed
as a flowrate signal.
The vortex flowmeter has no moving parts
and thus is very reliable. The DVZ series is
available with a Ryton body and a choice
of either nickel plated brass or 316 stainless
steel fittings. The bluff body is available
in either ryton or ceramic, which has
excellent long term wear characteristics.
The available outputs are frequency, 4-20
mA, adjustable relay, and compact electronics
with digital flowrate display, 4-20
mA output and adjustable transistor
switch options. |
