Chemical Engineering September 2020 - 58

Figure 3. New software
makes it possible for the
instrument's transmitter
to differentiate between
two pulse echoes, even
when they are very close
together. This allows for
accurate measurement of
thin layers
and 200 mm)
depending on
the transmitter
model and
probe style
being used.
However ,
some instruments
provide
functionality
that enables
the minimum
detectable
thickness of
the upper
product layer
to be cut in
half, to 2.5 in.
(60 mm). This
improvement
is possible
because of
new software
al go rit hm s
that allow the transmitter to detect
closely spaced signal peaks without
having to decrease its signal bandwidth.
Maintaining signal bandwidth
allows the instrument to retain its
high sensitivity and ability to handle
disturbances. This helps operators
improve insight into separation
processes, therefore improving
process optimization and reducing
production losses.
The ability to detect a thinner
upper-product layer is especially
beneficial in cases where no second
product should be present in
the vessel. For example, detecting a
hydrocarbon on top of methanol is
an indication that there is something
seriously wrong with the process. It
can also be very beneficial in separators
and scrapers, where the operation
of a vessel can be optimized by
reducing safety margins.
The tools available for oil producers
and chemical manufacturers
working with immiscible products
are improving, allowing plants
to optimize processes, resulting in
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Reference
1. Rosemount 5300 Level Transmitter - Guided Wave
Radar,
5300-gwr-transmitter
Author
Denny Nelson is a solutions
engineer for Emerson's
Automation Solutions business in
Göteborg, Sweden (Email: denny.
nelson@emerson.com; Phone:
0046 313 370279; LinkedIn:
www.linkedin.com/in/dennynelson/).
Nelson joined Emerson
in 2017, and he holds a B.Sc.
degree in product design
engineering from The University of Skövde and an MSc
engineering management degree from Jönköping
International Business School.
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operating efficiency and
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the contents of a tank, with
thick or thin layers, can improve
process control and possibly identify
when something has gone
wrong, allowing for timely corrective
action.
■
Edited by Dorothy Lozowski
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ChemiCal engineering www.Chemengonline.Com September 2020
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Chemical Engineering September 2020

Table of Contents for the Digital Edition of Chemical Engineering September 2020