Smoke and heat control systems - Specification for power output devices Ingestion-build-201039 which depends on the transmitter

which depends on the transmitter

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

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

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

Terms and Definitions – additional terms

Smoke and heat control systems - Specification for power output devices Ingestion-build-201039 which depends on the transmitter1 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.