| |
A Swiss chemical company has installed
KROHNE OPTIMASS Coriolis mass flowmeters
for batching various media into a fluid
mixer. In the past the company dosed
the reactants one after the other using
a weighing cell in the mixer. Now it
is possible to feed multiple educt at
the same time through ring pipelines
to the mixer. The new process saves
time and eliminates unnecessary measuring
errors.
For the chemical company there are
numerous other advantages in using the
OPTIMASS flowmeter. The straight tube
construction means that the instrument
is not influenced by the very high viscosity
levels found in this particular application.
|
The straight tube design also means that there
are no pressure losses. The measurement accuracy
of the flowmeter is considerably below 1%. Alongside
this mass flowmeter the chemical company has also
installed electromagnetic flowmeters manufactured
by KROHNE.
The OPTIMASS straight tube design
KROHNE chose the single straight tube layout
for its Coriolis flowmeters some time ago since
this design feature offers considerable advantages
over mass flowmeters with curved or twin tube
layouts. Curved-tube, ring-tube and twin-tube
layouts with flow dividers have proved to be
unreliable in many applications where Coriolis
flowmeters are specified. In twin-tube instruments,
viscous, non-Newton, shear sensitive media and
fluids containing solids can cause high pressure
losses. Abrasive media wear down flow dividers
and pipe bends. Palm oil, cellulose and other
materials containing fiber can accumulate in
the flow divider and cause blockages.
The principle advantages of the straight tube
design are: lower pressure losses; less abrasion
wear; qualified for high flow volumes; wide
measuring range; no blockage risk. Straight-tube
meters are also easy to clean, self draining
and suitable for measuring high-viscosity media.
These are just some of the advantages of a short
measuring tube with a large inner diameter.
Information: KROHNE Messtechnik GmbH &
Co. KG, Thomas Zimmerling,
E-Mail: TZimmerling@krohne.de |