Bump Test; Equipment; Performing A Bump Test - MSA Altair 5X Mode D'emploi

3.7 Bump Test

Perform a Bump Test before each day's use to verify
proper instrument operation. Failure to perform this test
can result in serious personal injury or death.
This test quickly confirms that the gas sensors are functioning.
Perform a full calibration:
• periodically to ensure accuracy
• immediately if the instrument fails the Bump Test.
CSA requires (per 22.2 NO. 152) that instrument sensitivity be tested
before each day's use on a known concentration of methane equivalent
to 25 to 50% of full scale concentration. ACCURACY MUST BE WITHIN
0 to +20% OF ACTUAL. Correct accuracy by performing the calibration
procedure described in Section 3.8.
The Galaxy Test System can also be used to perform a Bump Test.
NOTE: The Galaxy cannot test the following sensors:
• Chlorine Dioxide
• % Vol Butane
• % Vol Propane
• % Vol Methane.
For these sensors, use this Bump Test procedure.

3.7.1 Equipment

See Section 6.2, Accessories Parts List, for information on ordering
these components.
• Calibration Check Gas Cylinder(s)
• See Section 5.4 for calibration gas target values and
appropriate MSA calibration gas cylinders.
• Demand Flow Regulator(s)
• Tubing appropriate for the gases to be tested
• Kits containing tubing and regulators suitable for reactive and
non-reactive gases are available from MSA.

3.7.2 Performing a Bump Test

For ALTAIR 5X IR units with combustible % Vol IR sensors, the
following gas levels should not be exceeded when used for daily
3-16
! WARNING