HS-04 Operator’s Manual Chapter 5: User Mode and Calibration • 57
GAS.TIME
The GAS.TIME is the amount of time that the instrument is exposed to gas during a bump test.
The available choices are 30 seconds (factory setting), 45 seconds, 60 seconds, and 90 seconds.
1. After entering the SETTING menu, press AIR to scroll to GAS.TIME.
2. Press and release POWER MODE. The current setting flashes.
3. Use AIR to display the desired setting.
4. Press and release POWER MODE to save the setting and return to the GAS TIME item in the
SETTING menu.
5. See “Exiting the SETTING Menu” on page 58 to return to BUMP.SET menu.
CHECK
CHECK is the bump test tolerance value and is represented as a percentage of the calibration gas
concentration. It is the percentage that the bump test reading can differ from the auto calibration
value and still be considered a passed bump test. If the bump test reading differs more, the bump
test fails. The available values are 10%, 20%, 30%, 40%, and 50% (factory setting).
1. After entering the SETTING menu, press AIR to scroll to CHECK.
2. Press and release POWER MODE. The current setting flashes.
3. Use AIR to display the desired setting.
4. Press and release POWER MODE to save the setting and return to the CHECK item in the
SETTING menu.
5. See “Exiting the SETTING Menu” on page 58 to return to BUMP.SET menu.
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