QSG_F28+.394.00_EN_01 / 2019-02-25
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LEAK TEST
Direct measurement principle
The part under test3 and the reference
part5 are filled to an identical pressure.
A differential sensor4 measures the pressure
variation between the part under test3 and
the reference part5. In some applications,
the reference part can be replaced by a cap.
1 Device
2 Pressure sensor
3 Part under test
4 Differential pressure sensor
5 Reference part
Desensitized test
This mode is used for the measurement of large leaks, when the reject level required is
above the full scale of the differential sensor.
The test pressure is applied to the input
of the test part3.
The measurement is performed by the
pressure sensor2.
1 Device
2 Pressure sensor
3 Part under test
4 Cap on the reference connector
Other types of test are available in option (Burst test, Volume, Operator...).