RKI Instruments GX-2012 Manual - Manual (Page 76)

68 • Calibration Mode GX-2012 Operator’s Manual
5. Press and release the POWER ENTER button to display the bump test
gas values.
6. Use the AIRS or (SHIFT)T buttons to see the %volume combustible
gas bump test value.
7. A bump test may be performed on the standard 4 sensors or on the
%volume combustible sensor. Use the AIRS or (SHIFT)T buttons to
display the screen for the sensor(s) you wish to bump test.
8. Before proceeding, confirm that the bump test gas value(s) are the same
as the concentration(s) in the calibration cylinder. If they are not, adjust
the bump test gas value(s) by entering the AUTO CAL menu item,
changing the values there, and reentering the BUMP menu.
9. Connect the tubing from the demand flow regulator to the rigid tube on
the probe then quickly press and release the POWER ENTER button. The
unit will begin counting down from 30.
50
12.0
50
25.0
%LEL
%
ppm
ppm
MAINTENANCE
CH
4
O
2
BUMP 30
CO
H
2
S
100
vol%
MAINTENANCE
CH
4
BUMP 30