AS 7240.6:2017 PDF

AS 7240.6:2017 PDF

Adopts ISO 7240-6:2011 to specify requirements, test methods and performance criteria for point-type fire detectors using an electrochemical-cell carbon-monoxide sensor, for use in fire detection and alarm systems.

This part of ISO 7240 has been drawn up by ISO/TC 21/SC 3 and is based on a standard prepared by Standards Australia International Technical Committee FP-002 “Fire detection, warning, control and intercom systems”.

A fire detection and fire alarm system is required to function satisfactorily not only in the event of a fire, but also during and after exposure to conditions that the system is likely to meet in practice, such as corrosion, vibration, direct impact, indirect shock and electromagnetic interference. Some tests specified are intended to assess the performance of the fire detectors under such conditions.

The performance of fire detectors is assessed from results obtained in specific tests; this part of ISO 7240 is not intended to place any other restrictions on the design and construction of such detectors.

Carbon monoxide (CO) fire detectors can react promptly to slow, smouldering fires involving carbonaceous materials because CO does not depend solely on convection, but also moves by diffusion, and CO fire detectors can be better suited to applications where other fire detection techniques are prone to false alarms, i.e. due to dust, steam and cooking vapours.