AGS Mini Merlin CH4CO Handbuch für Installation und Betrieb - Seite 14

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Installation & Operation Manual
AGS Mini Merlin CH4CO

Bump Testing

What is bump testing?
'Bump testing' is a term used for checking a gas detector is functioning correctly by exposing it
to the target gas. A known concentration of the target gas is applied to the sensor to trigger an
alarm condition and ascertain the detector is working safely.
Why is it important?
A detector may visually appear in good order, but its sensitivity can be inhibited by external
factors. Dust, humidity, temperature fluctuations, cleaning products, contaminants or sensor
drift (ageing) can cause a decline in sensitivity and eventual failure. Regular 'bump tests' are
important to make sure the detector is able to detect a release of gas as early as possible.
How often?
A 'bump test' takes seconds and is often completed alongside a scheduled fire alarm test. We
recommend this is done at least weekly to reduce the risk of a detector not performing,
however the frequency should be determined from a risk assessment by the end user.
Please remember, 'bump testing' does not remove the need to have gas detectors inspected,
calibrated and serviced periodically by a trained engineer.
For more help and advice on bump testing, calibration and service – contact us.
Rev: 12 01-20
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