Freeze-dryer Epsilon 2-6D LSCplus
6 Operation
Version 07/2022, Rev. 3.0 of 20/07/2022
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Translation of the original operating manual
Option: LyoCam monitoring camera system
The LyoCam monitoring camera system is used to monitor and analyse
freeze-drying processes. A high-quality camera takes pictures of the
product at intervals from several seconds to several minutes. The intervals
are variable depending on the process section. The pictures are linked to
the LPCplus SCADA system for process visualisation and they are
assigned a time stamp in line with other recorded process parameters.
Option: Comparative pressure measurement
see also chapter 6.6.3.1 - "Creating a program", button ">>more"
During the
→
sublimation
, i.e. when the concentration of water vapour
molecules is rather high in the atmosphere, the value that is provided by
the gas-type-dependent vacuum sensor of the "Pirani" type (e.g. Thyracont
VCP 63) in the drying chamber deviates from the value that is provided by
a capacitive vacuum sensor (e.g. MKS 722B). When the proportion of water
vapour molecules decreases towards the end of the main drying phase, the
two sensors fall increasingly in line with one another. This difference will be
evaluated and used as an indicator for identifying the drying end of the
main drying phase.
Option: LAN process recording (RJ45)
This feature enables the recording of a running process directly on a
PC/laptop computer. During the process recording, the process data can be
viewed on the PC with LyoLogplus and they can be printed. It is also
possible to import the data directly into an Excel file after the completion of
the process recording.
Option: LyoControl measuring system
The Lyo Control measuring system can be used to determine the
crystallisation state of the product. In the liquid state, the electrical
resistance is very low. During the freezing process, the resistance
increases. The LyoRx control sensor measures the electrical resistance.
Option: LyoLogplus data logging software
LyoLogplus is a data logging software program by Martin Christ
Gefriertrocknungsanlagen GmbH that is specifically adapted to the
requirements of freeze-drying processes. Apart from the graphical
representation of the measurement data of currently running processes, it
also enables the data export for additional evaluation.
Option: LPCplus SCADA System
The Christ LPCplus system consists of the Supervisory Control And Data
Acquisition (SCADA) software program by Martin Christ
Gefriertrocknungsanlagen GmbH and a dedicated PC. The system is
connected to the LSCplus controller of the freeze-dryer via Ethernet and
provides the operation of all of the freeze-drying functions as well as
process recording (measurement data and process events), process
documentation and data backup. Furthermore, it enables the comfortable
administration of freeze-drying programs/recipes and users.
