3M™ Protégé Plus
Portable, reusable, single-Gas Monitor
OPERATION
087-0065, Rev D/February 2019
5-1
5. OPERATION
5.1. Operating the Monitor
At start up, the LCD shows the firmware version installed, current date and time, current alarm set
points for each sensor installed, and when the next required calibration is due. During operation, the
LCD displays continuous data on gas concentrations and alarm conditions. Additionally, you can
monitor peak values of gas concentrations.
Figure 5-1: Monitor LCD Indicators
WARNING: IF THE MONITOR FAILS TO RESPOND PROPERLY UPON START UP, OR IF
CALIBRATION IS OUT OF DATE, DO NOT USE THE DEVICE UNTIL IT HAS
BEEN PROPERLY CALIBRATED. FAILURE TO HEED THIS WARNING
COULD RESULT IN DEATH OR INJURY.
WARNING: IF MONITOR DOES NOT OPERATE IN THE MANNER DESCRIBED HERE,
DO NOT USE. TAG IT OUT OF SERVICE. FAILURE TO ENSURE IT IS
PROPERLY OPERATING MAY RESULT IN SERIOUS INJURY OR DEATH.
WARNING: YOU MUST FAMILIARIZE YOURSELF WITH THE ICONS IN BOTH THE
NON-ALARM AND ALARM STATES.
WARNING: IF THE DISPLAY IS MISSING ICONS OR CANNOT BE CLEARLY READ,
PLEASE CONTACT THE 3M TECHNICAL SERVICE.
WARNING: HIGH OFF-SCALE READING MAY INDICATE EXPLOSIVE
CONCENTRATION.
NOTE: You can change the displayed value (for normal mode) appearing on the monitor’s
LCD using the Portable Gas Detection (PGD) Application.
C l O
2
O
3
C l
2
PH
3
CO
2
H
2
SO
2
NH
3
HCNO
2
PEAK
BUMP
CAL
%LEL
PPM
10
-6
HIGH
STEL
LOW
TWA
1
2
3
5
6
7
8
9
10
11
12
16
15
14
13
4
