I’m persuaded by Kal’s logic (see here) as it relates to temp-probe placement in a three-vessel system—i.e., place the probe in the plumbing of the kettle output of the HLT and MLT and in the kettle wall of the boil kettle.
But with a biab setup, where the three-vessels are consolidated into one, I don’t see a clearly right choice, and all placement options seem to have benefits/drawbacks.
I like the idea of having the probe in the kettle wall, since this would allow me to have temperature readings when not recirculating. But based on other threads, I understand that this could lead to inaccurate readings during recirculation due to stratification/dead space as well as proximity to the element. Placing the probe in the plumbing of the kettle output has the advantage of a more accurate reading during recirculation, but at the expense of not being able to use the RTD without recirculating.
What do you all think about having one probe and two ports with thermowells—one in the outflow and one in the kettle wall? Then I could switch the probe from one port to the other depending on the stage of the process. Does this option raise any potential problems I’m missing or is it more trouble than it’s worth? (I’ve run some searches to see if other people have done/discussed this and didn’t see anything)
But with a biab setup, where the three-vessels are consolidated into one, I don’t see a clearly right choice, and all placement options seem to have benefits/drawbacks.
I like the idea of having the probe in the kettle wall, since this would allow me to have temperature readings when not recirculating. But based on other threads, I understand that this could lead to inaccurate readings during recirculation due to stratification/dead space as well as proximity to the element. Placing the probe in the plumbing of the kettle output has the advantage of a more accurate reading during recirculation, but at the expense of not being able to use the RTD without recirculating.
What do you all think about having one probe and two ports with thermowells—one in the outflow and one in the kettle wall? Then I could switch the probe from one port to the other depending on the stage of the process. Does this option raise any potential problems I’m missing or is it more trouble than it’s worth? (I’ve run some searches to see if other people have done/discussed this and didn’t see anything)
