MSA galaxy GX2 - Instrument Fails Zero Calibration or Bump; Instrument Fails Span Calibration or Bump; Instrument Records Do Not Display

GALAXY GX2
58
Troubleshooting
MSA
US
6.2 Instrument Fails Zero Calibration or Bump
(1) Check the Fresh Air filter and replace if contaminated.
(2
) If not using zero gas, ensure that the atmosphere is free of any interfering gas.
(3) If connecting test gas without a Cylinder Holder, ensure the gas tubing line is not connected
to the top fresh air port on the left side of the farthest left unit.
6.3 Instrument Fails Span Calibration or Bump
(1) Verify the instrument span setting is the same value as the test gas.
(2
) For ALTAIR H
2
S and ALTAIR CO instruments, ensure that the green gas seal is inserted in
the Test Stand.
(3) For ALTAIR 5/5X instruments, verify that the gas inlet on the instrument is fully inside the
inlet nozzle on the Test Stand.
(4) Check the right side of the farthest right unit to ensure the white plugs are secure over the
gas outlet connections.
(5) Check the sides of each unit to ensure the gas line barb fittings are in place and aligned
between the Test Stands and Cylinder Holders. Misaligned barbs lead to gas leakage.
(6) Ensure the cylinder configuration is correct. Refer to the Cylinder Configuration information
in the Setup section [ chapter 4.7] of this manual.
(7) Use the Details screen to identify failing sensor(s). If repeated failures occur, replace sensor
per instrument manual instructions.
6.4 Instrument Records Do Not Display
Instrument records only display in the farthest right Test Stand. Check the memory card port in
the right side port of the farthest right Test Stand. If the optional SD or SDHC memory card is not
installed, the instrument cal and bump records will not display.
Test Records Not Saved to Memory Card
Most likely caused by a corrupted memory card or new card that is write protected. In the case of
a write protected memory card, slide the switch on the side of the card to set it to accept data.
Occasionally, in normal use conditions, electrochemical sensors can be exposed to
either very high levels of the target gas or to an interferent gas, which can saturate the
sensor electrolyte or filter. If this type of saturation occurs, it may affect the sensors per-
formance and ability to zero or span calibrate. This is typically a temporary effect and
the sensor will self-recover if left in fresh air. The recovery time is dependent on the
saturation gas and the level of exposure, but is less than 24 hours in almost all cases.
Recovery should be attempted prior to sensor replacement.