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The confusing world of temperature sensors
The confusing world of temperature sensors
April 23, 2007
The lead-off tutorial in the Process Instrumentation & Sensors Monthly last week was about temperature sensors. This is a topic that I have some personal issues with, due to an experience with a difficult project some years ago.
Long story short, in an earlier life I was involved in commissioning a gas conditioning project at a lime plant. Our company provided a system to spray cool gas from the kiln to reduce the temperature before it hit a baghouse. There were four parties involved: 1. Our company and our system integrator who built the system; 2. The end user's A&E firm; 3. The end user; 4. Our parent company back in Germany. If memory serves, the four parties had four opinions as to what kind of temperature sensor was best for the application. During the time I was there, three different sensors were installed (2 types of thermocouples and an RTD) as one group or the other gained the upper hand. Changing the device also involved changing the cabling and possibly even the I/O card. It is not a pleasant memory. It was also a lesson that there can be some dissonance on the topic, and well meaning individuals can disagree.Some of this dissonance has manifest itself as responses to the article, which I will post shortly. Stay tuned.Posted by Peter Welander on April 23, 2007 | Comments (0)
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