3 vacuum connections, Vacuum connections – INFICON Helium Leak Detector Modul1000 User Manual
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4-6
Installation
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4.2.3
Vacuum connections
Fore-vacuum pump
The connection for the required fore-vacuum pump is on the left front side or on the
bottom of the device. Alternatively, the pump connection of the vacuum version of the
Modul1000 can also be on the right side.
1
Unscrew the connecting flange using the jaw-wrench SW13, to modify it and remove
the sealing.
2
Unscrew the locking plug of the connection you want to use
Make sure you save the sealing.
.
3
Screw the locking plug with the sealing into the opening of the removed connection
flange.
4
Screw in the connecting flange with the sealing.
Notice:
For the sniffer version of the Modul1000, only the pump connections on the
left side or on the bottom side can be used.
The used fore-vacuum pump must meet the following specifications:
•
The connecting hose should have a minimal diameter of 15 mm.
•
The fore-vacuum pump should provide a pumping speed of >2 m³/h
•
and a possible ultimate pressure of <1x10
-2
mbar.
If the fore-vacuum pump is equipped with a solenoid gas ballast valve or purge gas
valve, it can be controlled via the valve output V22 of the Modul1000.
Test sample/Test Equipment
The test sample or the test equipment are connected using the DN25 KF inlet flange
on the top of the Modul1000.
To be able to measure with the leak test device also in case of pressures higher than
0.4 mbar, the metering orifice, which is in the scope of delivery, can be mounted
before the inlet of the leak test device. If the metering orifice is installed in the suction
line of the leak test device, the maximum inlet pressure will be 3 mbar.
Because the pumping speed is greatly reduced when a metering orifice is inserted,
it will be reasonable to use a partial flow pump for evacuation.
To achieve short signal response times of the Modul1000, the orifice should be
mounted as close as possible to test sample, test equipment.
In Modul1000b, the metering orifice has already been installed and can also measure
until 3 mbar.
Notice:
The maximum permissible load vertically on the flange is 400 N.