Chemical Engineering January 2017 - 18

Brooks Instrument
Krohne
FIGURE 2. The Brooks SLA 5800 sealed, digital
thermal mass-flow controllers and meters feature
high accuracy, high zero stability and high repeatability.
They are engineered with advanced, configurable
multi-gas/multi-range capabilities
type of insight into the process and
throughout the lifecycle. To facilitate
optimal processes and increase the
efficiency of personnel, the company
has simplified fundamental operating
concepts with Total Insight. The Total
Insight concept is built into the latest
generation of Rotamass transmitters
and provides enhanced settings
for customized set ups, pre-defined
trend views, or multiple configuration
sets of fast changeover, data mobility,
increased safety and operational
flexibility.
Rotamass's Process Guard feature
manages advanced diagnostics.
Nearly 200 different events can be
dedicated and classified accordingly
by the user. Events can also trigger
data logging of the most important
process and device variables. Sustainable
and safe operation often
requires continuous monitoring, especially
of in-line meters. The Maintenance
Manager function continually
observes the key sensing elements
and also allows a total health check
during operation, minimizing interruption
of processes.
Thomas McCulloch, senior global
product manager, DP Flow Transmitters
with Rosemount (Chanhassen,
Minn.; www.emerson.com/en-us/
automation/rosemount), a subsidiary
of Emerson (St. Louis, Mo.; www.
emerson.com) agrees that the modern,
advanced diagnostic capabilities
can now provide greater process
18
FIGURE 3. To better and more accurately control two-phase gas flows, Krohne's Entrained Gas Management
(EGM) technology is available with the company's Optimass Coriolis mass flowmeters
insight. " Conditions like plugged impulse
piping, wiring degradation and
advanced warning of other problems
can be detected and the information
can be used to increase safety and
efficiency by drastically reducing potential
downtime. "
He says Emerson's Micro Motion
Model 5700 Coriolis flow transmitter
has been designed to translate measurement
data into meaningful insight
and instruction. The transmitter also
provides detailed measurement history
for troubleshooting or optimizing
the process. The measurement
data are translated into operating insight
through robust, time-stamped
history files for process and meter
health data, and logs for configuration
changes and alarms. The result
allows users to better leverage Coriolis
measurement data in order to
further understand and improve their
operating environment and achieve
new levels of productivity.
In addition to the assistance provided
by advanced diagnostics, much
of the information and process insight
provided by this new, smarter generation
of flow instrumentation can
be used to provide more accurate
information and tighter control of the
process, as well as increased safety.
Tighter control
" One of the flow types that is really
under scrutiny in today's chemicalprocessing
environment is gas flow,
so this part of the process has to be
monitored and controlled very carefully, "
says Howard Kramer, senior
applications engineer with Brooks Instrument
(Hatfield, Pa.; www.brooksinstrument.com).
" Smart digital gasflow
control is necessary in these
applications, as are the data the instruments
provide. The more data
you collect, the more likely you are
to prevent product deficiencies, minimize
failure and eliminate process
shutdowns. Preventing issues such
as these also helps to save downstream
equipment, which is often affected
by process anomalies. "
For this reason, having a flow device
that can not only compensate
for inadequacies in the process, but
also one that is capable of reporting
upon the discrepancy is essential to
avoiding process upsets. " The main
benefit of reporting discrepancies is
to know that there's a problem before
the problem actually exists, "
says Kramer. " A smart thermal massflow
controller is a great product for
this application because it provides
precision, as well as valuable information.
The precision and compensation
it provides can directly impact
the process and it will show you that
there's an anomaly that needs attention
to prevent failure and the need
for compensation in the future. "
The Brooks SLA 5800 sealed,
digital thermal mass-flow controllers
and meters (Figure 2) feature high
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JANUARY 2017

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Chemical Engineering January 2017

Table of Contents for the Digital Edition of Chemical Engineering January 2017