Smoke and heat control systems - Specification for power output devices Ingestion-build-201039

Smoke and heat control systems - Specification for power output devices Ingestion-build-2010391 Scope This part of ISO 21927 specifies requirements and gives test methods for primary and secondary electrical and pneumatic power output devices, designed for use in smoke and heat control systems in buildings. NOTE A summary of functions is given in Annex A.

Terms and Definitions – additional terms

vessels and bunkers

This part of ISO 8503 is also applicable to the determination of the surface profile

hydrogen embrittlement occurs when metals become brittle as a result of the introduction and diffusion of hydrogen into the material

– prescribe test methods

in a system operating under total pressures greater than or equal to atmospheric pressure

and equipment that are carried out during the operation and maintenance phase

BS EN 13087 is a European standard on protective helmets that discusses the test method for protective helmets retention system to improve the effectiveness of the retention system

which depends on the transmitter

Bubble point refers to the pressure at which the first flow of air through a liquid saturated fabric sample occurs and it is a measure of the largest pore-throat in a sample

dimensions and sectional properties are specified in BS EN 10210-2

What is ISO/IEC TR 9578 - Communication interface connectors used in local area networks about