0024-9551
Revision 1
34
PCA
®
400 User Manual
4.4 Button Sound
The analyzer includes a sound transducer which beeps to signal when a button has
been pressed.
The audible notification can be turned OFF and ON by changing the
user preferences.
Enabling / Disabling Button Sound
f
To enable / disable Button Sound:
Main Menu
Settings
( )
Button Sound
select
No
or
Yes
4.5 Inactivity Timeout
When enabled, the Inactivity Timeout feature will cause the analyzer to POWER DOWN if no
touch screen or keypad activity occurs within the selected duration.
Enabling / Disabling Inactivity Timeout
f
To change the inactivity timeout settings:
Main Menu
Settings
( )
Inactivity Timeout
select
None
,
20-minutes
,
30-minutes
or
60-minutes
4.6 Post-Purge Period
Purge feature at shutdown; if enabled, specifies a duration time
(None, 1, 5, or 10 minutes)
during which the analyzer’s pump will remain on in order to purge gases from the analyzer
and probe after a shutdown request has been initiated
.
Enabling / Disabling Post-Purge Period
f
To change the Post-Purge Period settings:
Main Menu
Settings
( )
Post-Purge Period
select
None
,
1-minute
,
5-minutes
or
10-minutes
4.7 Carbon Monoxide (CO) Zero
Configures the analyzer’s CO zeroing process to be done either manually or automatically.
Manual Zero
When the CO channel is set to Manual Zero, the analyzer does not zero the CO sensor to
ambient conditions during start up. In this mode, the “fresh air zero” established during
manual mode setup is stored in memory and used for the measurement of CO.
