Exercise X
155
In the software, increase the PSV setting to 40%.
Select the
icon to begin data logging. Continue to log the temperature for another
10 minutes, and then select the
icon to finish data logging.
If there is time, increase the PSV setting to 60%, and repeat this section of the
exercise.
Set the PSV back to 20%.
Create a new results sheet and repeat the investigation of disturbances with the gear
pump set to a speed of 50% to circulate (stir or mix) the water in the process vessel.
Return the gear pump setting to 0%.
Temperature Set Point
Investigate the effect of changing the set point temperature for T3:
Create a new results sheet by selecting the
icon.
Choose a new Set Point value. 40°C is suggested, unless this was the original value.
Depending on the starting temperature of the water, it may not be possible to achieve
temperatures above 50°C during indirect heating.
Select the
icon to begin data logging.
Log the temperature for 10 minutes, then select the
icon to finish data logging.
Create a new results sheet, and repeat the investigation of set point change with the
gear pump set to a speed of 50%. Return the gear pump setting to 0%.
Cycle Time
Create a new results sheet by selecting the icon in the tool bar of the software.
In the software, set the cycle time to 5s.
Select the
icon to begin data logging.
Log the temperature in the vessel for 10 minutes, and then select the
icon to
finish data logging.
Alter the cycle time again, to 20s.
Select the
icon to begin data logging.
Log the temperature in the vessel for 10 minutes, and then select the
icon to
finish data logging.
Reset the cycle time to 10s.
Create a new results sheet, and repeat the investigation of cycle time with the gear
pump set to a speed of 50%.
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