Rki-instruments GX-2012 Manual Manual de usuario Pagina 115

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GX-2012 Operator’s Manual Using Maintenance Mode 107
sensors.
15. After the last calibration gas value is set, use the AIRS button to scroll to
ESCAPE and press POWER ENTER to return to the calibration gas
values screen.
NOTE: The RKI Four Gas Cylinder typically contains 12% O
2
by volume.
Be sure to set the “OXY” reading to agree with the concentration
listed on the cylinders label, not zero.
16. Use the AIRS and (SHIFT)T buttons to select which sensor(s) you want
to calibrate, the standard 4 sensors or the %volume combustible gas
sensor.
The following instructions illustrate calibrating the standard 4 sensor
first, then the %volume combustible gas sensor.
17. With the calibration values screen displayed, press the POWER ENTER
button. AUTO CAL begins to flash and the current gas readings are
displayed.
18. Connect the tubing from the demand flow regulator to the rigid tube on
the probe. Allow the gas to flow for one minute.
0
20.9
0
0.0
%LEL
%
ppm
ppm
MAINTENANCE
CH4
O2
AUTO CAL
CO
H2S
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