![background image](http://html1.mh-extra.com/html/3m/protege-sg/protege-sg_operation-and-maintenance-manual_442734037.webp)
3M™ Protégé Plus
Portable, reusable, single-Gas Monitor
OPERATION
087-0065, Rev D/February 2019
5-5
5.6. Monitor LCD Alerts & Alarms
This section describes various alerts and alarms
Table 5-4: Monitor Alerts and Alarms Descriptions
lists the details.
When a self-test is successful the monitor turns to
the gas monitoring mode.
The LCD display battery icon, heart beat, sensor
type, gas reading and etc.
NOTE: To view the factory default alarm setpoints, see
. To
change the default settings and values, refer to Portable Gas Detection (PGD) Appli-
cation User Manual.
NOTE: If other error codes appear during the operation, see
.
Table 5-4: Monitor Alerts and Alarms Descriptions
LCD
Description
LCD
Description
Over Limit Exposure Alarm
• 3 fast LED flashes every 2
seconds
• 3 fast sounding beeps
every 2 seconds
• 1 vibration every 2 sec-
onds
•
ALARM
and
“+++”
flash
Negative Drift Alarm
• 1 LED flash every 2 sec-
onds
• 1 sounding beep every 2
seconds
• 1 vibration every 2 sec-
onds
•
“
—
”
and gas reading
flash
High Alarm
• 3 fast LED flashes every 2
seconds
• 3 fast sounding beeps
every 2 seconds
• 1 vibrations every 2 sec-
onds
•
HIGH
and gas reading
flash
Low Alarm
• 2 fast LED flashes every 2
seconds
• 2 fast sounding beeps
every 2 seconds
• 1 vibration every 2seconds
• l
LOW
and gas reading
flash
Table 5-3: Self-Test Sequence
LCD Display
Description
O
2
%
O
2
O
2
O
2
%
HIGH
O
2
%
LOW