AGS Mini Merlin CH4CO Manuel d'installation et d'utilisation - Page 14

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1. Wiring the Device

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