Inficon UL3000 Fab ULTRA - Set and Use the Function ZERO

6 | Operation INFICON
72 / 152 UL3000-Fab-ULTRA-Operating-instructions-iinb73en1-09-(2109)
ð If required, you can set the pressure limits individually. See also "Factory
settings [}34]".
3
To set the values for argon by pressing a button, press the "Argon Standard"
key.
ð Then the following settings deviating from the factory settings for air are used:
MASSIVE -> GROSS: 4 mbar
GROSS -> FINE: 1 mbar
FINE -> ULTRA: 0.2 mbar
ð If required, you can set the pressure limits individually.
4
Save .
6.3.10 Set and use the function ZERO
Why should I use
ZERO?
To be able to clearly measure small leakages the function ZERO should be used.
With each leak detection there is a "Background signal" (see "Definition of terms
[}8]") that disrupts the search or the measurement of leakages.
• To hide the background signal, activate the function ZERO.
• You can also use ZERO to hide a currently displayed leakage, which interferes
with searches for other or even smaller leaks.
A currently displayed leak is hidden through ZERO.
By using the function ZERO not only is the background signal hidden, but also the
representation of a current leak.
► If you want to prevent this, select the function ZERO only if not measuring a leak at
the same time.
Activate or deactivate
ZERO
ZERO is activated by factory settings.
ü
Supervisor
rights
1
> Setup > Measurement > ZERO and filter
2
If necessary change "ZERO mode". The factory setting is “I•ZERO 2.0”.
ð You can choose between "I•ZERO 2.0", "ZERO" and "Switched off".
ð If you select "OFF”, the ZERO button does not work.
3
Save .
ð If ZERO is activated, start the function by pressing the ZERO button. See also
"ZERO button [}25]".
How do I switch the
ZERO function ON?
Briefly press the ZERO button on the control panel or the touchscreen .