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Found 5 results

  1. Seeq's grouping functionality is helpful when you want to align multiple conditions and signals, but a signal (or set of signals) only applies to a subset of the conditions. Grouping a signal with a condition will only display that signal during the grouped condition. For example, here I have two temperature signals and a condition for each signal. I have used Profile Search to identify the profile for each signal I would like to compare. When I use Chain View or Capsule Time, the default will cause both signals to show up during each capsule. In this Chain View, the information of Reactor Temperature 1 is not relevant during the Profile Reactor 3 condition and vice versa: In order to view only the relevant signal information, I can use the grouping functionality in Chain View and Capsule Time to compare the relevant signals during each condition: 1) Select grouping in the toolbar. 2) Navigate to the grouping icon next to the condition in the details pane and select the signal that corresponds to the condition. Select multiple signals, if necessary. I can also view this in Capsule Time. As an additional option, I can overlay both signals using the One Lane and One Axis selections in the tool bar:
  2. Frequently Asked Question: Is there a way to change the color of my signals overlaid in capsule time view to highlight the different capsules? Solution: One approach to changing the color of the signal being overlaid in capsule time view is to create separate signals for each desired display color that only contain samples during specific capsule(s). The examples below provide a step-wise approach to coloring based on either logic or time. Logic Based Coloring: Scenario: We start out with a temperature signal that we are overlaying based on a daily condition. We want the temperature signal to show up in red if the daily average temperature is greater than 80F, and blue if the daily average temperature is below 80F. 1. Switch back to calendar view and calculate the Average Daily Temperature using the Signal from Condition tool. In this example, we choose the "duration" time stamp to simplify subsequent steps. 2. Use the Value Search tool to identify days in which the Average Daily Temp signal is greater than 80F. 3. Repeat step 2 to find the days where the average daily temperature was below 80F. 4. Use Formula to break the original temperature signal into two pieces, one when daily average temperature is above 80F, and one when then daily average temperature is below 80F. The formula code to complete step 4 is: //take the temperature signal and keep only samples within the Avg Daily Temp < 80F condition $temp.within($DailyAvgLow) 5. Finally, switch back to capsule time view, and use dimming to display only your new "Temp signal during High Avg Daily Temp" and "Temp signal during Low Avg Daily Temp" signals. Use the "One Lane" and "One Y-axis" buttons to display in a single lane on the same axis. Time Based Coloring: Scenario: We have a temperature signal and we want to overlay data from the last 4 weeks in different colors so we can easily see changes in the signal from week to week. 1. Use Formula to create a condition for the past 7 days. //Create a condition with max capsule duration 8d, comprised of a single capsule that begins at now-7d and ends at the current time. condition(8d,capsule(now()-7d,now())) 2. Use Capsule Adjustments in Formula (move() function) to create a capsule for 2 weeks prior. //Shift the capsule for last week back in time by 7d. $lastWeekCapsule.move(-7d) 3. Repeat step 2, shifting by -14d and -21d to create capsules for 3 weeks prior and 4 weeks prior. 4. Use Formula to break the original temperature signal into 4 pieces, one for each of the previous 4 weeks. //Create a new signal from the original temp signal that contains only samples that fall within the prior 7d. $temp.within($lastWeek) 5. Switch to capsule time view, and put all the new temperature signals on one lane and 1 y-axis.
  3. When examining data in Capsule Time view it can be useful to view data from the time period immediately the capsules alongside the data during the capsules. This can be done by: 1. Hover over the x-axis (shown in the image above as measuring time from the start of the capsule in hours), click and drag your mouse to the right. You will likely see no data from the time period before 0.0 on the x-axis. 2. Click on the "Dimming" option at the top of the Display Pane. Check the box to "Show Data Outside of Conditions". When this box is checked the data outside of the conditions is displayed, slightly more faintly than the data within the capsules. Optionally, utilize some of Seeq's coloring features in capsule time to display the data from each capsule and before/after in different colors (rainbow shown).
  4. I have a piece of equipment that regularly goes through cycles and I want to compare the cycles. In this case I know the exact date and time of the equipment runs so I have used the Custom Condition tool to specify my Previous Run and Current Run. Custom Condition allows you to enter dates for the condition you are interested in. This can also be done in formula. To create the condition for my Next Run I used Seeq's formula because this run is currently on going and I do not know the end date. This approach allows me to specify that this condition end at now. condition(2d, capsule('2020-06-01T17:48Z', now())) Now that I have defined my Previous, Current and Next runs I want to calculate the run time of each of those periods. I can do this in Seeq's formula tool using the time since function. This will allow me to create a signal whose value is the time since the start time of a condition. This signal will end at the end of the condition. In this case my time counter will be in hours, if you wanted it in days instead you would change the 1h to 1d. timeSince($condition, 1h) I duplicated this formula three times for my previous, current and next runs. Remember, you can always duplicate a formula by clicking the "i" by item properties. You can compare the run lengths of the 3 runs by putting them on the same lane and same axis. You'll noticed my Next Run has just started so the time since for it is much smaller. Lastly, you can switch to capsule time view to compare the run length as well as different signals over the run. In this case we are looking at the temperature of each run as well as the run length. You could imagine using this approach to monitor heat transfer coefficients, reactor temperature, reactor conversion, or % sulfur removed.
  5. Frequently asked question: How do i highlight capsules? I am looking at quite a few capsules in capsule time, is there any way i can compare or highlight a few of them against the rest to compare performance? Lets say i want to look at the most recent batch compared to all batches in the last month, look at one start up or shut down against several historical, or any number of other reasons why we might want to compare capsules in Capsule Time. Luckily, this is easy in Seeq! While in capsule time, simply select one or several capsules in the capsule pane to highlight them against the rest: Alternatively, if you do not know the date of the problem capsule but you can tell that it stands out, you can just click on it in the display pane to highlight it and it will be selected in the capsule pane for you to dig into further! If you want to un-select one of the highlighted capsules in capsule time, just click on it again and it will be dimmed. Image captured in Seeq R21.043
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