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PS200
PORTABLE GAS MONITOR
OPERATION
3.4. Switch the Display Backlight On/Off
The display backlight can be manually switched ON when working in poor lighting conditions.
Press the R button once to switch ON. After 20 seconds it will automatically switch OFF.
3.5. View MAX/MIN/STEL/LTEL
The monitor records the maximum (MAX) and minimum (MIN) gas values since switch-on. It also
evaluates the short-term exposure (STEL) and long-term exposure (LTEL) for CO and H
To view MAX/MIN/STEL/LTEL:
1. From the normal operating display, press the R button once to switch the monitor backlight ON.
2. While the backlight is still ON, press the R button once to view the MAX gas values.
3. Press the R button a 2
4. Press the R button a 3
5. Press the R button a 4
Figure 3-14: MAX/MIN/STEL/LTEL Gas Values
on a 4-gas monitor.
NOTE: The MIN is only displayed if an Oxygen sensor is fitted in the monitor.
64171, Rev. 11/December 2019
Figure 3-13: 4-Gas Normal Operating Display
time to view the MIN gas values.
nd
time to display the STEL values.
rd
time to display the LTEL values.
th
Figure 3-14: MAX/MIN/STEL/LTEL Gas Values
illustrates the MAX, MIN, STEL, and LTEL values
S.
2
3-7
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