Chemical Engineering April 2021 - 55

Solids Processing 2021 Special Advertising Section
Optimize calibrations
Putting data to work by optimizing calibration
intervals
A
chieving the correct balance between too much calibration
and too little is a challenge for anyone reliant on critical measurements.
Many companies follow a static interval approach and
calibrate once a year during scheduled downtimes. This fixed calibration
interval selection is a typical illustration of established but
outdated rules.
Ideally, calibration intervals should be chosen to reflect an acceptable
risk that the measurement error has not drifted outside
of an acceptable range. Considering common practice, this is seldom
the case. Often calibration intervals are set to one year for the
sake of convenience as it aligns well with annual planning cycles.
However, calibration intervals should be optimized to find the best
trade-off between cost and risk.
Using established existing statistical methods as a base,
Endress+Hauser has developed an enhanced method for calibration
interval optimization. With Calibration Interval Optimization
Endress+Hauser has developed a service that delivers more than a
calculated result. Significant interval changes are discussed, and
all underlying assumptions validated together with the customers.
Intervals are then included as one of a number of operational constraints
including downtime availability to deliver a fully optimized
calibration execution schedule. In the end, the customer benefits
from an overall reduction of both cost and risk.
This scientific model has been proven across +22 billion calibrations
and considers past calibration results to predict future behavior
with the following main results:
* 67% of current calibration intervals could be significantly
increased
* only 20% of instruments are set up with an optimal calibration
interval
* time operating out of tolerance can be reduce by 46% compared
to a static approach
Calibration Interval Optimization uses a proven scientific model to
determine intervals between calibrations.
It includes:
* Determination of optimal calibration intervals using innovative
methods
* Consultancy provided by metrology experts
* Alignment to, and application of intervals according to operational
constraints
The benefits:
* Reduction of calibration costs due to extended calibration
intervals
* Reduced out of tolerance risk as calibration intervals are reduced
www.endress.com
Jenike & Johanson Engineering Services
J
enike & Johanson, Inc. is
the world's leading technology
company for bulk material
handling, processing, and storage.
They deliver engineered
solutions to achieve reliable
powder and bulk solids flow
based on proven theories and
decades of project experience.
With their skilled, highly
technical team of experts and
industry-leading innovations,
they have successfully delivered
bulk material engineering
solutions for more than 55
years.
Bulk materials and their
flow properties are at the core of all
Jenike & Johanson's work. Every project
(7,500+ to date) is truly unique. Clients
are offered maximum flexibility in selecting
services required to meet their
bulk material handling needs. Jenike &
Johanson does not follow the " one size
fits all " concept - which can be a dangerous
pitfall in engineering. Decisions
made during the feasibility and engineering
stages of a project are critically important
for its success. If bulk solids systems
are not engineered from the outset to
handle the unique characteristics of the
materials, process start-up time can be
significantly delayed and design capacity
may never be reached.
The engineers at Jenike & Johanson are
renowned experts in the field of bulk material
engineering. They are frequent keynote
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM APRIL 2021
speakers at major industry
events, routinely deliver informative
webinars and customized
courses, and publish
thoughtful technical articles
in top industry journals and
publications - all this in order
to provide clients with the latest
insight on cutting-edge
methodologies which make
the powder and bulk solids
handling aspect of the business
run seamlessly.
The chemicals industry
provides the building blocks
for companies manufacturing
paints, pigments, coatings,
adhesives, resins, consumer products, and
foods. 75% of all chemicals are handled
in bulk solid form during manufacturing.
When feeding powders to reactors or conveying
wet cake from a centrifuge to a dryer,
poor material flow can result in throughput
limitations, non-uniform product, or dust
emissions/spillage.
www.jenike.com
55
http://www.endress.com http://www.jenike.com http://WWW.CHEMENGONLINE.COM
Chemical Engineering April 2021

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