34 • Display Mode GX-2003 Operator’s Manual
Peak Screen
The peak screen displays the highest (lowest for O
2
) concentrations
detected since the GX-2003 was turned on. Peak readings are stored in
the GX-2003’s memory until a higher level is detected, the peak
reading is reset, or the GX-2003 is turned off.
The lunch break feature enables the GX-2003 to remember peak
readings when it is turned off so it can continue them when it is
turned on again. See “Turning On the GX-2003, Normal Mode Only”
on page 20. To reset the peak readings during operation, press and
hold the RESET SILENCE button for a few seconds while in the peak
screen.
Elapsed Time Screen
The elapsed time screen displays the time in minutes since the GX-
2003 was last turned on. The elapsed time may be continued from the
last time the GX-2003 was in operation by using the lunch break
option. See “Turning On the GX-2003, Normal Mode Only” on
page 20.
TWA/STEL Screen
The TWA/STEL screen displays the time-weighted average (TWA)
and the short-term exposure limit (STEL) readings for CO and H2S
only.
The TWA reading is the average reading during the last 8 hours. If 8
hours have not elapsed since the last time the TWA reading was
cleared, the average is still calculated over 8 hours. The missing time
is assigned a 0 value (20.9% for oxygen) for readings.
P CH4 0%LEL
E OXY 20.9VOL%
A H2S 0.0ppm
K CO 0ppm
21:09
TIME IN
OPERATION
30 MINUTES
21:09
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