Switch The Display Backlight On/Off; Datalogging; Timed Logs; Session Logs - 3M GMI PS200-LMP Operation & Maintenance Manual

3M™ GMI™ PS200-LMP PORTABLE GAS MONITOR
OPERATION

3.4. Switch the Display Backlight On/Off

The display screen backlight can be manually switched ON when working in poor lighting condi-
tions. Press the R button once to switch the screen backlight ON. It remains ON for 20 seconds and
then automatically switches OFF.

3.5. Datalogging

The monitor logs 3 types of data:

1. Timed logs

2. Session logs

3. Calibration logs

3.5.1. TIMED LOGS
Timed logs are either manual or automatic. For both, the monitor stores the following data:
• TIME and DATE of log
• % Gas and/or ppm CO reading (mode dependent)
The monitor automatically logs data at 1 minute intervals.
The user can initiate a manual log at any time by pressing the L button once.
3.5.2. SESSION LOGS
A session is defined as the time the instrument operates in a particular mode. The data logged is
mode dependent.
3.5.3. CALIBRATION LOGS
For each calibration, the monitor logs the following:
• Calibration TIME and DATE
• Calibration method (ABC)
• Before Zero gas reading for % Volume Gas and ppm CO
• After Zero gas reading for % Volume Gas and ppm CO
• Before Span gas reading for % Volume Gas and ppm CO
• After Span gas reading for % Volume Gas and ppm CO

3.5.4. DATALOGGING CAPACITY/DATE FORMAT

• Timed logs:
• Session logs:
• Calibration logs:
If the datalogging memory is full, the monitor prompts the user. Also:
• User CANNOT enter INSPT mode
• User can still enter PS and PURGE modes
64171LMP, Rev. 1/February 2019
24 hours at 1 log per minute
Minimum of 180
Minimum of 8
3-7