RKI Instruments GX-2012 Manual - Manual (Page 52)

44 • Display Mode GX-2012 Operator’s Manual
NOTE: Each screen displays for 20 seconds. If you do not press the
DISPLAY (ADJ) button to scroll to the next screen or press the
POWER ENTER button to enter an item within 20 seconds, the GX-
2012 automatically returns to Measuring Mode.
HC Range Screen
This screen displays only if your GX-2012 is equipped with both the catalytic
% LEL combustible sensor and the TC % volume combustible sensor. It
allows you to select the display units for the combustible channel as
% LEL/% volume autoranging or % volume. If autoranging is selected, the
combustible gas reading will be displayed in % LEL up to 100% LEL, which
is equivalent to 5% volume for methane (CH
4
). Above 100% LEL, it will be
displayed in %volume. If % volume is selected, the combustible gas reading
will be displayed in % volume only.
CAUTION: If the combustible channel is set for % volume only, then there
are no gas alarms for any detection channel and NO ALARM
will appear in the upper left corner of the screen when you
return to normal operation.
To update the HC range setting:
1. After entering Display Mode and arriving at the HC Range Screen, press
and release the POWER ENTER button. The current setting will appear
at the bottom of the LCD.
2. Use the AIRS or (SHIFT)T button to change the setting.
3. Press the POWER ENTER button to save the change.
4. Press the DISPLAY (ADJ) button to advance to the next screen.
Peak Screen
The Peak Screen displays the highest (lowest for O
2
) concentrations detected
since the GX-2012 was turned on. Peak readings are stored in the GX-2012’s
memory until a higher level is detected, the peak reading is reset, or the GX-
2012 is turned off.
HC
SEL
22:39
HC RANGE