Chemical Engineering April 2023 - 20

Endress+Hauser
able diode laser spectrometer
(TDLS) group, " As process
analyzers become more reliable,
there's a general shift
toward
applying
was used to monitor both chemical
levels in wastewater streams and
product quality,
presented by several scientists
technoloFIGURE
4. Endress+Hauser's Memosens 2.0 sensors for
liquid analysis can store multiple data points, convert these
to a digital signal and communicate them wirelessly to an
associated transmitter
plants, technology suppliers continue
to develop and commercialize new
or enhanced sensor-based products
and digitally enabled solutions.
Analyzer suppliers, for example,
continue to move chemical composition
analyses from the laboratory
- where results typically come too
late to avoid off-specification production
- to online, in-situ analyzers that
provide continuous online composition
measurements. This also eliminates
the need to extract samples.
Process analyzers are also becoming
easier to implement, use and maintain.
According to Ryan McSherry, a
product manager in Yokogawa's tungies
traditionally reserved for
a lab setting to field devices
... More and more, operating
companies are looking
to automate what would traditionally
be manual-operator
actions and to validate
that automated actions taken were
correct. "
Some interesting advancements
are also being made in inferential " soft
sensors. " Soft sensors combine multiple
measurements (primary and/or
secondary) from traditional sensors
with artificial intelligence (AI) techniques
and software to generate usable
measurements of key variables
that cannot currently be measured
directly with today's technology.
While this concept is relatively new
in the chemical industry, it has been
widely used in other areas, including
autonomous vehicles and healthcare.
In experimental trials, the technology
Dow Chemical (Midland, Mich.; www.
dow.com) in 2020.
As the CPI as a whole progresses
on a path toward Industry 4.0 and
digital transformation, we're likely
to see many more interesting solutions
emerge that will provide chemical
manufacturers with the means to
measure previously unmeasurable
process variables online and gain
more value from the thousands of different
process and other sensors already
installed in their plants. At the
same time, it's also encouraging to
see standards organizations finally
coming together to effectively address
many of the key pain points felt by end
users across the process industries.
These include lack of interoperability
between the wide variety of process
sensors, field networks, control systems,
and host applications installed
in their individual plants and across
their larger enterprises.
n
Paul Miller
according to work
at
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Chemical Engineering April 2023

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