biosystems PhD Lite User Manual

23
HIGH ALARM ADJUST
LEL = 10 %
EXIT
↓
HIGH ALARM ADJUST
LEL = 9 %
EXIT
5. Once the desired alarm setting is reached, press
the MODE button to confirm the selection or move
to another sensor by following steps 3 and 4 above.
Save Changes?
YES NO CANCEL
6. Press the MODE button with YES highlighted to
save the new alarm settings. The instrument will
then return to the Main Menu.
Alarm Levels
Saved
3.2.3 Alarm and OK latches
The PhD Lite includes alarm latch and OK latch
functions that can be enabled or disabled according to
the user’s requirements.
3.2.3.1 Alarm latch settings
When the PhD Lite’s alarm latch is enabled, the audible
and visible alarms will continue to sound after the
atmospheric hazard has cleared. To reset the alarm
after the hazard has cleared, simply press the MODE
button.
When the PhD Lite’s alarm latch is disabled and the
alarm condition is no longer present, the instrument
automatically returns to normal operation, and the
visible and audible alarms cease without further input
from the user.
To adjust the alarm latch settings:
1. Enter the Alarm Menu as described above in
section 3.2.1 and use the navigation arrows to
highlight LATCH.
CUSTOM
LATCH
DEFAULT TEMPERATURE
WARNINGS EXIT
2. Press the MODE button. The current latch settings
will then be shown.
ALARM LATCH
SETTINGS
ALARM LATCH
DISABLED
3. Once the alarm latch setting is shown, the up and
down navigation arrows may be used to toggle
between ENABLED and DISABLED.
ALARM LATCH
DISABLED
↓↑
ALARM LATCH
ENABLED
4. Once the desired setting is reached, press the
MODE button to confirm the setting.
Save Changes?
YES NO CANCEL
5. Press the MODE button with YES highlighted to
save the new latch settings. The instrument will
then return to the Main Menu.
Alarm Latch
Saved
3.2.3.2 OK latch settings
If an alarm condition occurs and clears while the PhD
Lite is operated in text-only mode with the OK latch
enabled, the instrument will continue to display numeric
readings for the sensor that was in alarm. This allows
the user to know that an alarm condition was present
during the current operating session.
If an alarm condition occurs and clears while the PhD
Lite is operated in text-only mode with the OK latch
disabled, the PhD Lite will again display OK for the
sensor that was in alarm.
To adjust the OK latch settings:
1. Enter the Alarm Menu as described above in
section 3.2.1 and use the navigation arrows to
highlight LATCH.
CUSTOM
LATCH
DEFAULT TEMPERATURE
WARNINGS EXIT
2. Press the MODE button. The current alarm latch
setting will then be shown.
ALARM LATCH
SETTINGS
ALARM LATCH
DISABLED
3. Press the right navigation arrow once to move from
the alarm latch setting to the OK latch setting
ALARM LATCH
DISABLED
→
OK LATCH
DISABLED

biosystems PhD Lite Specifications

General

Brand	biosystems
Model	PhD Lite
Category	Security Sensors
Language	English