Palas Fidas 200 Series Operating Manual page 79

5200-en_V2.0_06/20
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.
6 Verifying and calibrating measuring system
79