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Found 3 results

  1. It is common in manufacturing processing plants such as oil and gas refineries, to monitor the temperature trend in furnaces. Example in the refineries, the furnaces tube metal temperature (TMT) monitoring severity increases for dirty services such as crude distillation and coker units. Operation team uses this information to decide either to go for rate cut or feed rate skewing before the TMT reaching mechanical limits to prolong the run length. Upon reaching the limit, the furnace will be taken out-of-service by means of spalling or pigging, and consequently impacts the production rate.
  2. This question comes up fairly often, so I thought best to put one solution in the forum. Please feel free to suggest other approaches. Say you have two temperature signals and you want a third signal that shows always uses the larger value of the two. The logical thought is an if statement, e.g., in pseudo-code: If temperatureA > tempertureB then temperatureA else temperatureB So the question often hits Seeq support, as "How do you do an IF statement in Seeq". Seeq, at this time, does not have IF statements, but we have some techniques to achieve the same thing. For this p
  3. I have a condition that represent unit procedures. These capsules come from a batch execution system connector. Each capsule in the condition contains a property called 'Max Temperature'. I am trying to create a condition that just have the hot capsules. I am using a Seeq formula and filter to do this. Here's my formula: $c.filter( $cap -> $cap.getProperty('Max Temperature').isGreaterThan(170) ) I don't get any errors from this formula, but, I don't get any results. I know some of the max temperatures are higher than 170 because I can view that in the Seeq Details pane: W
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