28 • Bump Testing a GX-2009
for a description of calibration results.
16. The SDM-2009 will then purge the system with fresh air for 5 seconds.
17. After the fresh air purge is complete, the GX-2009 screen will alternate
between the gas readings and the bump test or bump test and calibration
results. For a successful bump test, the gas readings at the end of the gas
application will be displayed. For a successful automatic calibration, the auto
calibration values will be displayed. For a failed bump test or automatic
calibration, the gas readings at the end of the gas application will be displayed.
If all channels passed the bump test, the BUMP
LED will turn solid green. If
any channels failed the bump test, the BUMP
LED will turn solid red. If all
channels passed the calibration, the CAL
LED will turn solid green. If any
channels failed the calibration, the CAL
LED will turn solid red.
Figure 12: Screen Indication for Passed Bump Test
Figure 13: Screen Indication for Failed Bump Test, CAL OFF
Figure 14: Screen Indication for Failed Bump Test and Passed
Automatic Calibration
BUMP AIR
P P
BUMP
CO ppm H2S ppm
CH4 %LEL OXY vol%
P P
50 11.0
BUMP
CO ppm H2S ppm
CH4 %LEL OXY vol%
47 24.0
F F
BUMP
CO ppm H2S ppm
CH4 %LEL OXY vol%
F F
0 20.9
BUMP
CO ppm H2S ppm
CH4 %LEL OXY vol%
0 0.0
F P F P
BUMP/CAL
CO ppm H2S ppm
CH4 %LEL OXY vol%
F P F P
50 12.0
BUMP/CAL
CO ppm H2S ppm
CH4 %LEL OXY vol%
50 25.0