Efficient Plant Nov./Dec. 2022 - 25

vibration monitoring
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ESTABLISH GOALS
Digital-monitoring solutions for asset management and predictive maintenance
can take many forms. Instead of hiring analysts to travel to factories
for troubleshooting, USB accelerometers that connect to cell phones and
tablets make it easy for any onsite maintenance professional to share
data with analysts using email or the cloud. Wireless sensor systems
eliminate the need to make measurements in hard-to-reach or dangerous
places, as information can be sent at regular intervals and provide immediate
notification when warning or critical levels are reached.
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Plants not designed with wireless machine monitoring in mind may
require repeaters, gateways, or mesh networks to extend signal
transmission.
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Acquire Vibration
Data Wirelessly
IN INDUSTRIAL ENVIRONMENTS, where the Internet of
Things is commonly referred to as the " industrial internet of things "
(IIoT), the interconnectivity of machines, devices, and sensors using
cloud computing allows collection and analysis of tremendous
volumes of data, outputting simplified results to user interfaces to
assist with human decision-making processes. When it comes to
predictive maintenance, it's easy to see the benefits of such technology:
worker safety and productivity is increased, travel costs are
decreased, long cable runs are eliminated with wireless technologies
and, above all, assets are consistently protected. Here are some key
considerations when choosing accelerometers for wireless vibration
monitoring.
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CONSIDER PHYSICAL LIMITATIONS
The broadcast range of wireless vibration sensors is one of the most
important considerations in assessing your sensor needs, as transmissions
can range from hundreds to more than a thousand feet. Unfortunately,
many plants were not designed with wireless machine monitoring in
mind, and factory layouts can limit signal ranges. Many sensors require
repeaters, gateways, or mesh networks to extend signals. These can add
to the cost and overall efficiency of the system. When exploring options,
consider a consultation to determine the requirements of your facility and
set realistic expectations.
PROTECT YOUR DATA
Going wireless with data collection can expose your systems to security
breaches if security protocols aren't in place. Secure systems involve
one-way communication from the sensor to the receiver, with initial setup
requiring hardwire connection to the product software. Sensor output
should always be encrypted.
AVOID DATA OVERLOAD
Because of their ability to collect large amounts of data with minimal
human effort, wireless systems are the best way to monitor trends and
prevent irregular operations. The amount of information provided by
wireless accelerometers can vary, however, from a few relevant vibration
parameters to a complete array of waveform data. While waveform data
collection can be useful in issue diagnosis, it requires a large storage
capability and can limit sensor bandwidth. You may find it more useful to
program sensors to alert when specific conditions are met, signifying a
need for further analysis.
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Information for this article was provided by IMI Sensors, a division of
PCB Piezotronics, Depew, NY. For additional insight,
visit pcb.com/imi/sensors.
NOV/DEC 2022
MANAGE COSTS
To cut costs when switching to wireless systems, additional solutions
can be found in technologies designed to convert the wired sensors you
already use to wireless capability. Consider " starting small " -focusing
resources on critical machinery with more frequent monitoring needs or
machinery in difficult-to-access locations. As you familiarize yourself with
the new system, more assets can be brought into the fold, ensuring longterm,
cost-saving protection against catastrophic failure. EP
EFFICIENTPLANTMAG.COM | 25
http://www.pcb.com/imi/sensors http://www.EFFICIENTPLANTMAG.COM

Efficient Plant Nov./Dec. 2022

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