Bump Test
A bump test quickly confirms that the gas sensors are functioning. Perform a full calibration to ensure accuracy.
There are two methods to perform a bump test on the ALTAIR io 4:
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Automatically through the ALTAIR io DOCK |
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Manually using proper calibration gas, regulator, tubing, and a calibration cap. |
Bump test frequency is often stipulated by national or corporate regulations; however, bump testing before each day's use is generally the accepted best safety practice. Perform a bump test more frequently if the device is subjected to physical shock or high levels of contaminants.
WARNING!
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Perform the bump test per the instructions in this user guide. Do not continue operation of a detector that is not able to pass a bump test. |
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Perform a bump test more frequently if the tested atmosphere contains the following materials, which may desensitize the combustible gas sensor and cause erroneous readings: |
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Lead-containing compounds |
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Hydrogen sulphide exposures over 200 ppm or exposures over 50 ppm for one minute. |
Failure to follow these warnings can result in serious personal injury or death.
If the device fails the bump test, perform a calibration to check sensor accuracy per the Calibration section before using the device.
ALTAIR io DOCK Bump Test
To perform the automatic bump test:
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Insert the device with the display facing the ALTAIR io DOCK Test Stand until it clicks. |
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The appropriate test runs automatically based on the Grid-configured settings and indicates bump test results upon completion. |
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Remove the ALTAIR io 4 by pressing the gray release button. |
Manual Bump Test
The manual bump test requires the following equipment:
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Proper, Unexpired Calibration Gas Cylinder |
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0.25 liters/min. Flow Regulator |
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1/8” ID Superthane Ester Tubing |
To perform the manual bump test:
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Verify the gas concentrations displayed match calibration gas cylinder. |
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Navigate to the bump test menu option. |
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Install the calibration cap. |
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a.
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Insert the tab on the calibration cap into the left slot on the device. |
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Press the calibration cap until it seats onto the device. |
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Press both the top and right tab down onto the device until they snap into place. |
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Ensure the calibration cap is properly seated. |
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e.
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Connect one end of the tubing to the calibration cap. |
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f.
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Connect the other end of the tubing to the gas regulator. |
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Select Start to begin the bump test. |
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Open the pressure reducer valve on the calibration gas cylinder. |
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The device will display the bump test results. |
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Close the valve after bump testing. |
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8.
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Remove the calibration cap. |