BUCHI Nano Spray Dryer B-90 - Manual (Page 66)

6 Operation
66 B-90 Operation Manual, Version B
6.4.2 View parameters menu
To enter the “Menu” press the corresponding multifunctional button below the screen. Inside the
menu, use the multifunctional buttons for navigation.
The “View parameters” menu and its sub menus provide information about the actual system status.
It is accessible at any time and can supply the user with useful information about ongoing processes.
No changes can be made here.
NOTE
In ‘closed loop’ mode the N
2
and O
2
valve open and close depending on the O
2
content in the gas
loop to maintain the selected O
2
concentration (< 4 % or <1 %).