Edwards ELD500 Series, Инструкция по эксплуатации

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D13510840D - Calibrated leak - screwed socket
Page 72
Technical Data
Installation
The capillary of the calibrated leak is made up of super-sensitive quartz material.
The calibrated leak has to be handled with highest care. To prevent the destruction of the
calibrated leak it may not be exposed to vibrations or other stresses and strains. In addition
it is very important to assure that the system is de-pressurized at maximum 2 bar per second
to avoid a blockage of the leak due to condensation.
Assembly instructions
All bonds have to be glued with a two-part epoxy adhesive with a minimum lap shear strength
of 23 Mpa.
Operating pressures up to 20 bar
If the maximum operating pressure that is exposed to the calibrated leak is below 20 bar, the
transport casing can be glued as a retainer for the calibrated leak into the test sample.
Advantage: The calibrated leak is detachable connected to the test sample.
Figure 52 Operating pressures up to 20 bar
Operating pressures higher than 20 bar
If the test leak should be used at pressures higher then 20 bar up to the maximum pressure
of 40 bar, the calibrated leak must be screwed and sealed in the thread, of the calibrated leak.
The transport casing may not be used.
The calibrated leak is non-detachable connected to the test sample.
Part number D13550930
Leak rate Q Customised in the range of
10
-2
mbar ls < Q < 10
-7
mbar ls
Accuracy ± 15%
Calibration gas Helium
Maximum pressure 20 to 40 bar if the capillary is conventionally
glued in (see Assembly instructions )
1. Two-part epoxy adhesive