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Bump Test

Manual Bump Test

To perform a manual bump test, you 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

Note:

If you are bump testing EXO 8 Diffusion in a windy environment, you must use the wind guard. See the Using the Wind Guard section for more information on using the wind guard.

  1. Ensure EXO is in clean air.
  2. To navigate directly to Bump test from the Home screen, use the left and right buttons to scroll, then press the center button to select Days To Bump Test. Skip to step 3.

    Or to navigate to Bump test from the Main menu, open the Main menu.

    Select Gas options.

    Select Bump test. A screen opens displaying the message, “Continue with bump test?”

  3. Select . EXO runs an audio/visual self test. See the Alarm Test section for more information.
  4. When prompted to start the bump test, ensure the gas sensors you wish to bump test are selected. By default, EXO tests all sensors.
  5. Select Start bump.

    EXO begins 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.
  6. Turn the gas regulator off when prompted by EXO.
  7. Go through steps 6-9 until all sensors have been tested. The bump test procedure is only considered successful when all the sensors are successfully tested.
  8. If all sensors are successfully tested, press the center button to complete the bump test. This screen times out after a few seconds. EXO displays a pass or fail message and when the next bump test is due.
  9. Remove the tube from the manual calibration inlet, then 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.

EXO

Last updated: January 27, 2026