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Bump Test

Manual Bump Test

To perform a manual bump test, you will need:

  • A cylinder or cylinders containing the appropriate gas(es)

  • A 0.5 LPM (or 1 LPM for Cl2, HCN, NO2, NH3, SO2, or H2S) fixed flow regulator attached to the cylinder(s)

  • A tube fitted with a quick connect coupling insert

CAUTION:

If you are bump testing EXO Diffusion in a windy environment, you must use the wind guard. See Wind Guard for more information on using the wind guard.

  1. Ensure EXO is in clean air.
  2. Press the OK button to enter the Main menu.
  3. Select Gas options.
  4. Select Bump test.
    A screen will open displaying the message, "Continue with bump test?"
  5. Select Yes. EXO will run an audio/visual self test. See Alarm Test for more information.
  6. A screen will prompt you to start the bump test. Ensure all the gas sensors you wish to bump test are selected. By default, EXO will test all sensors.
  7. Select Start bump.
  8. EXO will begin to count down from 60 seconds. Within this time window:
    1. Attach a tube fitted with a quick connect coupling insert to EXO’s manual calibration inlet.
    2. Confirm the other end of the tube is attached to the fixed flow regulator on the gas cylinder.
    3. Turn on the gas regulator to apply the gas.
  9. Turn the gas regulator off when prompted by EXO.
  10. You will be prompted to go through steps 6-9 until all sensors have been tested. The bump test procedure is only considered successful when all the sensors have been successfully tested.
  11. If all sensors have been successfully tested, press the OK button to complete the bump test.
    This screen will timeout after a few seconds. EXO will inform you if the bump test has passed or failed and when the next bump test is due.
  12. Remove the tube from the manual calibration inlet and let EXO sit until the gas readings stabilize. This may take a few minutes.

If a bump test fails:

  • Check the gas and cylinder connections.

  • Let EXO sit until its gas readings stabilize.

  • Try the bump test again.

If the bump test continues to fail, contact your organization’s safety supervisor.

G7_EXO

Last updated: January 27, 2026