Crowcon Gas-Pro - Bump Test Functionality

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From the 1st November 2010, EN60079-29 part 1 has been harmonised under the ATEX
directive 94/9/EC. Therefore to comply with the ATEX directive, portable apparatus sensing
ammable gases should have a functional check with gas before each day of use. Other
testing regimes may be employed depending on local circumstances.
3.2 Bump Test Functionality
As part of the bump testing functionality Gas-Pro offers the ability to allocate gas sensors tted to the Gas-
Pro into different ‘bump test groups’. These groups apply to both the speedy and smart bump functionality.
The groups available are ‘Daily’ and ‘Intermittent’, these can be congured via Portables Pro.
This allows a different gas test regime to be applied for different sensors inline with site/company
procedures. The information below explains this in greater detail:
If the sensors are grouped into the ‘Intermittent
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’ group with, for example, a 90 day interval (this
interval is congurable in Portables Pro), Gas-Pro will inform the user a bump test is due on the 90th
day of use. This is indicated by a gas test due warning on the Gas-Pro screen during start up.
Figure 19: Gas test due screen
Gas-Pro will not inform the user of a need for a gas test until the interval period from the last
successful bump has expired. However on applying a magnetised ow plate, or placing Gas-Pro into
the Q-Test the user will be given the option to complete a gas test (or proceed to pumped operation).
If the sensors are grouped into the ‘Daily’ group, the Gas-Pro will inform the user a bump test is due
at the start of each working day (actually every 24 hrs). This is indicated by a gas test due warning
on the Gas-Pro screen during start up.
If Gas-Pro is turned off and on again within 24 hours of the gas test, the Gas-Pro will not inform the
user of a need for a bump test. However on applying a magnetised ow plate, or placing Gas-Pro into
the Q-Test the user will be given the option to complete a gas test (or proceed to pumped operation).
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The PID sensor can only be allocated to the ‘intermittent’ group; daily group is not available for PID sensors. The PID sensor
must also be the only sensor in the intermittent group for the bump test functionality to operate correctly.
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