Diffusion Test - Sartorius Stedim Biotech Sartocheck 4 plus Betriebsanleitung

Fig. 7-6 | Programming tests: Program selection
Fig. 7-6b | Optional parameters

7.4 Diffusion Test

Fig. 7-7 | Programming tests: Program selection
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Programming Tests
Select the programs in the menu "Programming tests: Program selection". You can
select existing programs by entering the line numbers or by selecting them directly
on the touch screen. The selected line is highlighted in blue. Scroll back and forth
in the program selection list with List DOWN | UP. Confirm the selected program line
by pressing Enter. The Enter key turns gray. If you would like to correct the program
memory location, select a new line number or highlight the new line directly on
the touch screen.
Re-confirm by pressing Enter. Press PAGE DOWN to scroll to the next page.
The diffusion test is used as an example.
If the optional Barcode Scanner is used for programming, please compare chapter
7.18 on page 66).
Optional Parameters for Detection of Disconnected Filters
In case of a disconnected filter (housing), an integrity test can be successfully
performed because the test-evaluating parameters (e.g. BP
To avoid such situations, it is possible to define three additional parameters.
A non-standard test (compare fig. 7-8) must be chosen to get access to these
parameters. As soon as at least one of these parameters are not fulfilled, a warning
message is displayed | printed. The following parameters can be defined:
Min. limits:
Min. DIF/WIT/WFT:
Min. Flow BPT:
Min. Volume:
When pressure is applied to the upstream side of a wet filter, a diffuse gas stream
starts to flow through the filter membrane after a short time. Diffusion is dependent
on the effective filter surface area. The diffusion test is not suitable for testing disk
filter systems. However, the diffusion test is a very well suited test method for the
integrity testing of medium-sized and larger filter cartridge systems starting from
approx. 150 cm
a direct correlation to the actual retention behavior of the filter (for a more detailed
description, see Chapter 12, Appendix).
In the menu "Programming tests: Program selection", the test type is selected.
– Select test type (standard test or user-defined test)
manuals search engine
Parameters can be activated | deactivated
A minimal diffusion rate can be defined. This parameter is
valid for diffusion test, WIT and WFT.
A minimum flow rate can be defined for the Bubble Point Test.
This value represents the minimum flow that must be
measured at BP .
max
A minimal net volume can be defined (any connected filter
system will increase the volume).
2
. The diffusion value refers to a test pressure, which means there is
, Diff ) are fulfilled.
min max
Operation 31