6
Verifying and calibrating measuring system
5200-en_V2.0_06/20
79
Performing leakage test
1.
Place the IADS tube, without the sampling head, on the aerosol inlet
tube.
ð
The inlet of the IADS tube is accessible.
2.
Seal the IADS tube with a plug.
3.
Switch
on
the pumps with the slider
suction pump
.
ð
The pumps evacuate the sampling system in the controller as well as
the IADS tube. The pump output increases audibly.
4.
When the value has stabilized at its minimum:
Write down the value of the parameter
sensor flow rate
.
This is the
gross leakage
of the entire system.
5.
Remove the plug from the IADS tube.
6.
Calculate the net leakage value.
7.
Put the sampling head back into place.