75 • Calibrating Using the Auto Calibration Method GX-6000 Operator’s Manual
6 . To check or update the gas concentrations, use the ▲AIR and SHIFT ▼
(PANIC) buttons to put the cursor next to CONCENTRATION and
press and release the POWER/ENTER button to display the Calibration
Gas Values Screen.
The gas concentrations displayed in the Calibration Gas Values Screen
must match the gas concentrations listed on the 5-gas cylinder or the 4-
gas calibration cylinder and the PID cylinder.
If all concentrations match, go to Step 12.
If one or more concentrations do not match, continue with Step 7.
If you do not want to continue with the concentration adjustment, press
and release the DISP/LOCK button to return to the Auto Cal Menu.
NOTE: The RKI 4-gas cylinder typically contains 12% O
2
by volume.
When using the auto calibration method, be sure to set the “O2”
auto calibration value to agree with the concentration listed on the
cylinder’s label, not zero.
7 . Use the ▲AIR and SHIFT ▼ (PANIC) buttons to place the cursor next to
the channel whose gas value you want to change.
8 . Press and release the POWER/ENTER button. The auto cal value will
begin to flash.
9 . Use the ▲AIR and SHIFT ▼ (PANIC) buttons to adjust the calibration
gas setting to the desired value.
NOTE: The calibration gas value cannot be set lower than the low alarm
setting. If the calibration gas value listed on the calibration cylinder
is lower than the current low alarm setting, enter Maintenance Mode
and change the low alarm setting. See “Updating the Alarm Point
Settings” on page 157 for instructions. If you need to change the
alarm point setting only to perform a calibration, make sure that you
change the alarm point setting back to its original value once the
calibration has been performed.
AUTO
CONCENTRATION
CH4 50 %LEL
O2 12.0 %
H2S 25.0 ppm
CO 50 ppm
VOC 100 ppm
ESCAPE
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