Sartorius Sartocheck 4 plus Operating Instructions Manual page 34

Fig. 7-14 | Test: Start
Fig. 7-15 | Stabilization
Fig. 7-16 | Volume measurement
34 Operation
The test sequence is structured as follows:
Pressurization
®
Sartocheck 4 plus Bag tester adjusts the pressure to the pre-programmed test
pressure.
After a short waiting period during which the system is tested for major leakage,
the program goes into the stabilization phase.
Stabilization Phase
During the stabilization phase, the test pressure is adjusted to the exact desired
value. Fluctuations in test pressure occur as a result of cartridge compaction and
temperature variations created by the different filter housing temperatures and
the downstream air flowing in from the compressed air supply.
These fluctuations in test pressure are compensated for during stabilization.
About half of the stabilization time is utilized to carry out volume measurement
(when volume measurement is selected).
Test Phase
In the test phase, the system is in a closed state. The pressure drop resulting from
diffusion is measured over the test time entered.
Volume Measurement
A clock is shown during the volume measurement.