Freeze-dryer Epsilon 1-4 LSCplus
Freeze-dryer Epsilon 2-4 LSCplus
6 Operation
Version 07/2022, Rev. 3.0 of 20/07/2022
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Translation of the original operating manual
Option:
→
Comparative pressure measurement
(see chapter 6.7 - "Optional extensions and special equipment")
NOTE
The indication of the measurement value "dp Comp" can be configured
in chapter 6.6.1.1 - "Main window "Manual"" under "Actual values of the
current process" in the dialog box "Select actual value".
NOTE
If only capacitive sensors are permissible (e.g. for freeze-drying solvent-
containing products), comparative pressure measurement is not possible.
The comparative pressure measurement can be activated or deactivated by
pressing the button in the dialog box.
• Progress condition:
If the difference between the readings of the Pirani and the capacitive
vacuum sensor at the end of the last main drying section is below the
limit "
p Comparative", the drying process will be considered complete
at the current shelf temperature and chamber vacuum. Thus, the
progress condition for switching to the next section is fulfilled and the
next section will be initiated.
If the condition for switching to the next section is not fulfilled, a process
message will be issued, the current section will be extended, and further
pressure increase tests will be executed periodically until the condition
is fulfilled.
• Disabled:
There will be no comparative pressure measurement during the main
drying phase. There will be no evaluation.
Fig. 66: Dialog box "Comparative pressure measurement"
