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3.2.3 Calibration after bump fail
If any channel fails speedy bump or smart bump then Gas-Pro can be congured (via Portables Pro)
to perform a ‘calibration after bump fail’ immediately after the test failure.
i
Calibration should only be performed with appropriately accurate gas.
As this test immediately follows a speedy or smart bump, if ‘calibration after bump fail’ is congured
the speedy or smart bump test will need to undertaken with calibration quality gas.
i
Ensure the gas applied matches the conguration settings in the Gas-Pro or the test will
fail. This can be done via Portables Pro.
i
Should a ammable sensor be tted, check the label for the original calibration target.
3.2.3.1 Procedure
• If calibration is intended, the instrument should have been zeroed manually within 15 minutes
prior to the calibration attempt.
• Following a bump test failure, leave the instrument in the Q-test module or with the ow plate
attached and the gas on.
• Wait for the calibration result screen indicated by the
or .
• The Gas-Pro then returns to normal operation.
During this process the new calibration values are stored to the instrument memory and the
calibration dates are advanced by the congured interval – commonly 1 month as the Gas-Pro has
not been through a formal service/calibration routine (dependant upon region/setting).
If the gas test calibration fails this may be indicative of a more serious sensor issue, including the
need to replace sensors. The instrument should then be serviced.
3.3 New sensor calibration/service
Servicing or the tment of a new sensor can only be undertaken by a suitably trained technician
using the PC software and the appropriate gases.
In addition calibration should be performed as required by local or organisational regulations. In
the absence of suitable evidence, such as a eld assessment by a competent person, Crowcon
recommend regular service and calibration every 6 months.
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