Acoustics. Declared noise emission values of information technology and telecommunications equipment1 Scope This document is applicable to information technology and telecommunications equipment. It specifies: a) for a batch of equipment, the method for determining the following values: the declared mean A weighted sound power level, LWA,m; the declared mean A weighted emission sound pressure level, LpA,m; the statistical adder for verification, Kv; the statistical upper limit A weighted sound power level, LWA,c; b) how acoustical and product

Electrical equipment installed in areas with dangerous concentrations of flammable gases

to realize interoperable WS

— Constant flow method

The objective of AE testing is to provide 100 % volumetric testing to define and grade zones of the structure which are acoustically active with burst type AE

The chemistries of some alloy designations have been revised in Table 1

This part of the IEC 60598 series specifies requirements for luminaires intended for use where the necessity of limited temperature on the outer surface exists

the ability to measure signals simultaneously and to measure the ASE between

This standard provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 20 fieldbus

NOTE 2 The requirements given in this International Standard are also applicable to other consumers who are legally entitled to use the service provided by the supplier

BS 4876:1984

b) guidance on mapping those requirements to CASE tool characteristics to be evaluated

What is BS 2G 223 - Requirements for screen terminating devices about