在进行正式的CE认证评估程序之前，制造商必须明确自己是否能够评估自己产品的符合性，或者需要公告体机构的协助。 压力设备指令的范围被划分在不同的类别（I至IV），根据按照指令附件II的危险等级依次上升。

II类或更高危险等级的设备必须有公告体机构的参与。

一个认证机构验证产品进行合格评定的合规性。这也保证了足够的技术文档支持产品的合规性。如果认证机构参与生产控制阶段，其标识号将遵循CE标志。

当确信产品符合性之后，公告体认证机构会发出一个证书，以确认这一点。制造商将宣布他唯一的责任符合相关指令的符合性声明（DOC）。在DOC的建立是一项法律义务。

符合性声明必须包括制造商的详细信息，如名称和地址，产品符合性等基本特征，任何欧洲标准和性能数据和识别号认证机构组织的代表以及具有法律约束力的签名。有关详细信息，请参阅指令。

The pressure equipment in the scope of the Directive is classified in different categories (ranging from I to IV), according to ascending level of hazard in accordance with Annex II of the Directive.

The involvement of a Notified Body is obligatory for equipment of category II or higher.

A Notified Body verifies the compliance of a product by conducting a conformity assessment. It also ensures that the technical documentation sufficiently supports the product compliance. If the Notified Body is involved in the production control phase, its identification number will follow the CE marking.

When the Notified Body is convinced of product compliance, it will issue a certificate to confirm this. The manufacturer will then draw up the Declaration of Conformity (DoC) to declare on his sole responsibility conformity to the relevant Directive. The establishment of the DoC is a legal obligation.

The Declaration of Conformity must include the manufacturer’s details such as name and address, essential characteristics the product complies with, any European standards and performance data and the identification number of the Notified Body as well as a legally binding signature on behalf of the organisation. For further details please consult the Directive.

www.ecmchina.com