INFICON Description | 4
UL3000-Fab-ULTRA-Operating-instructions-iinb73en1-09-(2109) 25 / 152
• If you press the START button on the control panel during measurement, the
maximum leak rate display is updated.
Function Touchscreen Control panel
Starting START button
Display maximum leak rate Cannot be operated
via touchscreen
Press the START button
again.
4.3.2.2 STOP button
• To stop the measurements.
• Can be operated via the touchscreen of the control panel.
• Using the Stop button on the control panel you can do more than just stopping the
measurements but also perform ventilation.
Function Touchscreen Control panel
Stop Stop button
Vent Press the Stop button again
and keep it pressed for
approx. 2 seconds.
(Prerequisite is the setting
“ventilation mode”
“manual”, see "Activate
vacuum ranges [}68]”.)
4.3.2.3 ZERO button
• To hide the "Background signal", see also "Definition of terms [}8]”.
• Can be operated via the touchscreen of the control panel.
• Using the ZERO button you can switch ZERO on and off. For further details see
"Set and use the function ZERO [}72]”.
Function Touchscreen Control panel
Background suppression ON ZERO button
Background suppression OFF Press the ZERO button again and
keep it pressed for approx. 2
seconds.