Connecting peripheral equipment Installation and start-up
EN 3925-0060 V207-00 MANUAL R03.doc
HeMaTech
Prüftechnik
Connecting compressed air
The supply air connection, for supplying the leak tester with compressed air, is located
on the back of the device. The supply air connection has a G¼" fitting for a 8/6 mm
hose.
The supplied compressed air must be oil free and filtered. Please make sure that the
compressed air to be connected has a constant pressure of approx. 1.5 bar above the
filling or testing pressure (min. 5.0 bar/ü, max. 10 bar/ü, see also pressure table on
back of housing).
Before connecting the air supply make sure, that the compressed air hose is undam-
aged and will not be kinked or squashed. The hose must be not pressurized free.
After connecting the hose, tighten the spigot nut of the fitting and check for tight fit.
Connecting the test medium (option)
Devices with a test pressure higher than 6 bar are equipped with a separate connec-
tion for the test medium . This also applies for devices, which are to be operated with
a special test medium, such as nitrogen, helium, etc.
The source pressure value can be taken from the table of pressure values on the back
of the device. Before connecting the test medium supply make sure that the hose for
the test medium is undamaged and will not be kinked or squashed. The hose must be
not pressurized.
After connecting the hose, tighten the spigot nut of the fitting and check for tight fit.
Connecting specimen and reference volume
Two fittings G1/8" for 8/6 mm hoses for connection of a specimen and a reference
volume are arranged on the back of the tester. The dimensions of the hose connec-
tions may vary in dependence on the version of the device (test volume).
In order to prevent any expansion (breathing), the hose should be of appropriate
strength. A suitable hose (PA-tube) is available from us.
Hose 4/2; max. 45 bar at 20 °C; Order-No. 8082-0354
Hose 6/4; max. 27 bar at 20 °C; Order-No. 8082-0379
Hose 8/6; max. 19 bar at 20 °C; Order-No. 8082-0381
Hose 10/8; max. 15 bar at 20 °C; Order-No. 8082-0382
Make sure that the supply lines to specimen and reference volume are pressure tight.
The lines must be as short as possible. Avoid the use of plug-type fittings, because the-
se could cause leakages in the testing circuit.
If possible, use a pressure tight original specimen as reference volume. With a test
volume < 5 000 ml the connection of a reference volume is not necessary. For thin-
walled or elastic specimen the connection of a reference volume may be necessary,
even for small volumes. If you do not connect a reference volume, you must close the
reference volume connection with the blind cap provided for this purpose.
Before connecting the reference volume make sure that the hoses for test medium and
reference volume are undamaged and will not be kinked or squashed.
The hoses should not be pressurized.
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