Question 1: Why Do We Need This Measurement? Here is where the process really begins. Whether checking the temperature of bearings on a compressor, liquid flowing through a pipe or the interior of an oven, there has to be some understanding of why the measurement is necessary. Without proper justification to prove the new equipment provides value, it will be difficult to move forward with a purchase.
Yes, it’s a very basic question, but some companies simply never ask it. If you get a blank stare in response, you can suggest some possibilities:
Who needs the information?
Do operations depend on having the reading available?
Is it a monitoring function?
Is it driving a temperature control loop?
Is it supplementing a different instrument and variable (e.g., being used to calculate a mass flow reading)?
Is it controlling a safety function?
Hopefully this will shake loose some answers. Once past this point, it’s possible to start refining the design specs by asking additional questions, such as: What is being measured? What are the measurement requirements? Designing an installation to measure the temperature of steam in a pipe is different than the bearings of a compressor. The article goes on to encourage readers to resist settling for an OK installation. With the range of devices and design tools available, every temperature measurement can be optimized to deliver the best performance possible. Don’t pull something off the shelf and say, “This should work.” There may be far too much at stake. Take advantage of the enormous range of products and design tools, such as Emerson’s Rosemount Thermowell Design Accelerator, to create high performance installations with long service life and minimal lifecycle costs. So how do you work through new application designs? Do your people know how to use all the resources available to solve a problem? Visit the Rosemount Temperature Sensor pages at Emerson.com for more on technologies and solutions for the whole gamut of temperature measuring challenges. You can also connect and interact with other design teams in the Refining and Chemical groups at the Emerson Exchange 365 community.
The post Choosing Temperature Instrumentation Should Begin with Understanding the Process appeared first on the Emerson Automation Experts blog.
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