Pfeiffer Vacuum ASM 310 - Memo Function; Zero activation

Access: Menu [Test] [Inlet vent] Choice - Setting
limit
1)
Vent timer
(If automatic 'Inlet
vent')
To be enabled (optional)
Activation of the automatic closure of the inlet vent valve.
Enabled
Disabled
To be set
Vent timer = time between the opening of the air inlet valve and its auto-
matic closing.
This is used to limit the consumption of dry air or nitrogen if the purge is
connected.
00'00'' – 59'59''
1) Initial setting: see chapter “Tree diagram to the Settings menu”
For quick access from the main screen, configure a function key to [VENT] (see chapter
“Function keys”).
●
The [VENT] function key is required for the operator to carry out a manual inlet vent
(see chapter “Function keys”).
●
To lock the command for the inlet vent valve, delete the [VENT] function key. The icon
remains on the main screen as an indicator but manual activation by the operator is
disabled.
By connecting an inlet vent (or nitrogen) line to the inlet vent, the detector’s tracer gas pol-
lution is reduced.
8.2.6 Memo Function
This function freezes the main screen at the end of a test: the last measured leak rate from the test is
displayed and flashes.
This function is only available with the ‘hard vacuum’ test method as soon as the ‘gross leak’ test mode
is reached.
Access: Menu [Test] [Memo Function]
Choice - Setting limit
1)
Active To be enabled
Activation of the Memo function
No
Yes
Display time To be enabled
● Enabled = the value of the measured leak rate flashes for the set duration.
● Disabled = the value of the measured leak rate will flash until a new test be-
gins.
Enabled
Disabled
To be set
Display time
00'00'' – 59'59''
1) Initial setting: see chapter “Tree diagram to the Settings menu”
For quick access from the main screen, configure a function key to [MEMO] (see chapter
“Function keys”).
8.2.7 Zero activation
This function helps the user to identify very small leak rate variations in the surrounding background
noise or to dilate small measured leak rate fluctuations on the analog display.
Settings menu
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