Chemical Engineering July 2021 - 13

Fluke Process Instruments
FIGURE 4. This new Linescanner measures over a
thousand temperature points along a scan line in
300 seconds
the temperature fields under common
process conditions. " ...for the majority
of liquid- and steam-measurement
applications, ABB's new non-invasive
sensors are just as accurate and
responsive as those placed in thermowells, "
says Sosale.
Emerson has also developed
non-invasive temperature measuring
devices. The Rosemount X-well
Technology calculates an accurate
process
temperature
without the
need for a thermowell or any process
penetrations by using a thermal conductivity
algorithm, says Emerson's
Stultz. " This innovative design allows
for a simpler, safer and more costeffective
temperature measurement
solution for the customer. "
Multi-point measurement
" One of the trends we are seeing
is that customers want more
measurement capabilities than just
a spot pyrometer, which only provides
a single point of data, " says
Jeff Kresch, product manager, Infrared
Products at Fluke Process
Instruments (Everett, Wash.; www.
flukeprocessinstruments.com).
" Operators are looking for more
temperature information about their
process, alluding to the fact they'd
like to look at an area of measurement
or multiple points of measurement
at once, " he says.
" What we're currently seeing across
many of our applications is, where 10
years ago we would have sold pyrometers,
we're now selling fixed thermal
imagers, " Kresch continues. " So thermal
imaging is bleeding into the pyrometry
measurement area. "
New technologies revolve around
using vision and infrared (IR) simultaneously,
continues Kresch. " Being
able to see the process visually, but
also from a thermal-temperaturemeasurement
standpoint, is new,
and I think that's one of the key
things that operators are looking
for, " he says. " We've been introducing
more high-end technologies for
making area measurements and recording
data - including a number
of changes to our thermal-imaging
product line, particularly for looking
at tanks, vessels and gasification
systems in the chemicals industry. "
Last April, the company introduced
the MP Linescanner Series
(Figure 4), which delivers continuous,
accurate, edge-to-edge thermal images
and temperature measurements
for high-speed manufacturing
processes. The device delivers realtime
imaging at scan speeds up to
300 Hz. Such high speeds are necessary
for detecting temperature abnormalities,
such as hot spots. The
new Linescanners can measure up
to 1,024 temperature points across
a scan line at a rate of 300 lines per
second, the company says.
The company also offers customized
process-imaging systems to meet
the specific application requirements
for processes like glass processing,
extrusion coating, thermoforming
machine control, kiln shell monitoring
and gypsum wallboard production.
Fluke Process Instruments is also getting
ready to introduce a new ATEXcertified
model of the Thermalert 4.0
Pyrometer, which can survive in explosion-proof
environments.
While not brand new, fiber optics
technology is gaining increasing interest
as a solution for multi-point
temperature measurements, says
Nicholas Meyer, product marketing
manager at Yokogawa Corporation
of America (Sugar Land, Tex.; www.
yokogawa.com/us). A single fiber optic
cable is capable of monitoring thousands
of temperature points, making
it an attractive solution for large-scale
applications, such as tanks and pipelines,
he says. " Fiber-optic temperature
solutions, such as Yokogawa's
DTSX, can be used to detect leaks
in vessels or pipelines, improving operational
safety and reducing potential
environmental impact. "
Meanwhile, for multipoint temperaCHEMICAL
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Chemical Engineering July 2021

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