GX-2012 Operator’s Manual
Overview • 23
Chapter 3: Using the GX-2012 in Normal Mode
Overview
This chapter explains how to operate the GX-2012 in Normal Mode. Normal Mode is used
to perform confined space entry monitoring or general area monitoring. While in Normal
Mode, Display Mode and Calibration Mode are accessible.
If a standard version of the GX-2012 is ordered, it is shipped with Bar Hole Mode disabled
so that the instrument only runs in Normal Mode when turned on.
Start Up, Normal Mode
This section explains how to start up the GX-2012 in Normal Mode, get it ready for
operation, and turn it off.
NOTE:
The screens illustrated in this section are for a 4-gas unit that has the % LEL
range for the combustible gas channel. The screens displayed by your GX-2012
may be slightly different.
Turning On the GX-2012, Normal Mode Only
The following description of the GX-2012 start up sequence assumes that the following
items in Maintenance Mode are turned on:
LNCH BRK
,
ID DISP
,
CL RMNDR
, and
BP
RMNDR
. If any of these items is turned off, then the corresponding screen will not
appear. This description also assumes that Bar Hole Mode is not active.
1. Connect the tapered rubber nozzle or the sample hose to the GX-2012’s quick connect
inlet fitting.
2. If a sample hose is used, screw the probe onto the sample hose’s threaded fitting.
3. Press and briefly hold down the POWER ENTER button. Release the button when
you hear a beep.
4. If
LNCH BRK
is turned on, the Resume Datalog Screen displays.
•
Press and release the POWER ENTER button to continue accumulating time-
weighted average (TWA), PEAK readings, and time in operation from the last
time the GX-2012 was used. The short-term exposure limit [STEL] reading is
reset each time the GX-2012 is turned on.
•
Press and release the DISPLAY(ADJ) button to reset the accumulation of these
measurements.
rESU
4
RESUME
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