erformance in service;Safety requirements;Specification (approval);Stationary;Testing;Warning devices【摘要】: This European Standard specifies general requirements for the construction, testing and performanceof electrically operated apparatus for the detection of combustible gases, designed for continuousoperation in a fixed installation in domestic premises. The apparatus may be mains or battery powered.Additional requirements for apparatus to be used in recreational vehicles and similar premises arespecified in EN 50194-2.NOTE 1 For caravan holiday homes EN 50194-1 applies.This European Standard specifies two types of apparatus to operate in the event of an escape of towngas, natural gas or liquefied petroleum gas (LPG):- Type A apparatus - to provide a visual and audible alarm and an executive action in the form of anoutput signal that may actuate directly or indirectly a shut-off device and/or other ancillary device;- Type B apparatus - to provide a visual and audible alarm only.This European Standard excludes apparatus for the detection of toxic hazards of gases such ascarbon monoxide (see EN 50291-1 and EN 50291-2).Apparatus complying with this standard is not considered suitable for industrial or commercialinstallations for which EN 60079-29-1 apply.NOTE 2 Apparatus tested in accordance with EN 60079-29-1 will not necessarily comply with this European Standard.【中国标准分类号】: N56【国际标准分类号】: 13_320;29_260_20【页数】: 26P.;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |