Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: EN 12952-11:2007
• Năm ban hành / Publication date: 2007
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Water-tube boilers and auxiliary installations - Part 11: Requirements for limiting devices of the boiler and accessories
• Phạm vi áp dụng / Scope of standard: This European Standard specifies requirements for limiters (or limiting devices) which are incorporated into safety systems for water-tube boilers as defined in EN 12952-1. A limiter (or limiting device) can be either: - a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3, and needs to include the safety logic and final actuator, or - one element of a safety system, for example, a self-monitoring water level sensor used as part of a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3. The overall boiler protection function shall be provided in association with additional safety logic (where appropriate) and a final actuator.