Fluid flow in closed conduits. Connections for pressure signal transmissions between primary and secondary elements best-seller Alternative methods may be used

Alternative methods may be used if shown to be equivalent

This document covers those aspects that need to be addressed when programmable electronic systems are used to carry out electric safety functions for escalators and moving walks (PESSRAE)

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Fluid flow in closed conduits. Connections for pressure signal transmissions between primary and secondary elements best-seller Alternative methods may be used1 Scope This International Standard sets out provisions for the design, lay out and installation of a pressure signal transmission system, whereby a pressure signal from a primary fluid flow device can be transmitted by known techniques to a secondary device safely and in such a way that the value of the signal is not distorted or modified.