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2.11 Bump Test
Crowcon recommends regular bump tests to conrm sensor operation. This involves applying a
known composition of the correct gas to each sensor to verify sensor response and alarm function.
Organisational specic Health and Safety regulations should be adhered to, and a number of exible
and simple solutions are available.
T4 implements a speedy bump test in which gas is applied to trigger alarm level 1.
T4 bump strategy can be congured via Portables Pro 2.0.
A bump test can be performed on T4 in one of the following ways:
• Via T4 menu and utilizing the calibration/bump test plate (see Section 2.8.5)
• Via Portables Pro 2.0 utilizing the calibration/bump test plate
• Via the I-Test gas station where all testing is fully automated.
I-Test is an intelligent stand alone gas test and calibration solution, suitable for small and large
eet users alike, I-Test offers simple fully managed testing with data capture as well as the
ability to update congurations.
Please refer to I-Test User & Operator Manual M070002
If any channel fails speedy bump then T4 should be calibrated, please refer to Section 2.8.6.
i
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.
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