RKI Instruments Gas Tracer - Manual (Page 36)

28 • Start Up, Normal Mode Gas Tracer Operator’s Manual
You can scroll up or down through these screens using the AIR▲
and (SHIFT)▼
buttons.
6. With the Normal Mode Select Screen displayed, press and release
the POWER ENTER button and continue with the startup sequence
as described in the previous section, “Turning On the Gas Tracer,
Normal Mode Only”, from step 4 on page 21 on.
NOTE: If no button is pressed for 20 seconds, the unit will proceed
into whichever mode is displayed.
7. To exit Normal Mode and return to the Mode Select Screen, press
and hold the (SHIFT)▼ button for 5 seconds while in the Normal
Operation Screen.
Performing a Fresh Air Adjustment, Normal Mode
Before using the Gas Tracer, it is recommended to set the fresh air
readings for the target gases by performing a fresh air adjustment.
This will set the combustible gas and CO channels to zero and the
OXY channel to 20.9%.
1. Find a fresh-air environment. This is an environment free of toxic
or combustible gases and of normal oxygen content (20.9%).
2. Turn on the unit as described above in “Turning On the Gas Tracer,
Normal Mode Only” or “Turning On the Gas Tracer in Normal
Mode With All Modes Active”.
3. Press and hold the AIR▲ button. The display prompts you to hold
the AIR▲ button.
4. Continue to hold the AIR▲ button until the display prompts you to
release the AIR▲ button. The Gas Tracer will count down from 8
on an autoranging combustible gas channel as it sets the fresh air
reading for all channels. Once the countdown has finished, start up
is complete and the unit is ready for monitoring.
AIr
CAL
HOLD AIR