Edwards ELD500 Series

D135-10-880C - Operation
Page 72
Leak rate filter
Main menu > Settings > Filter and Background > Leak rate filter
Mass
Main menu > Settings > Mass
The requested mass of the measured gas can be selected. The ELD500 must be in standby
mode for changing to another mass.
After changing the mass a calibration for the selected mass should be done
(see Calibration).
Miscellaneous (language, calibration request, service interval...)
Main menu > Settings > Miscellaneous
The actual date and time, the preferred language and the mains frequency can be set in this
sub-menu.
Softkey 3: Fixed
A leak rate filter with a fixed time constant is used
Softkey 6: Auto
Auto makes sure, that the signals are averaged in optimized time intervals, based on the
leak rate intensity. Auto also eliminates noise peaks that are not related to leak rate signals
and provides extraordinary short response times for low leak rate signals. This setting
should be used for the ELD500.
Softkey 2: H2 (2 amu)
Hydrogen with the mass of 2 amu will be measured.
Softkey 3: 3He (3 amu)
Isotope of helium with the mass of 3 amu will be measured.
Softkey 7: 4He (4 amu)
Helium with the mass of 4 amu will be measured. Default setting
Softkey 2: Time and Date
Setting of time and date
Softkey 3: Language
Selection of the language
Softkey 4: Calibration request
Setting if the ELD500 should remind for a calibration