Preface This is the second edition of CAN/CSA-Z15002, Flow-metering devices for connection to terminal units of medical gas pipeline systems, which is an adoption, with Canadian deviations, of the identically titled ISO (International Organization for Standardization) Standard 15002 (second edition, 2008-07-01). It supersedes the previous edition published in 2002 as CAN/CSA-Z15002 (adopted ISO 15002:2000). Scope 1.1 This International Standard is applicable to: flow-metering devices that are connected, either directly or by means of flexible connecting assemblies, and disconnected by the operator at terminal units of a medical gas pipeline system for flow adjustment, measurement and delivery of medical gases flow-metering devices that are connected and disconnected by the operator at gas-specific connection points of devices such as pressure regulators 1.2 This International Standard applies to: a) flow-metering devices intended to be used with the following medical gases: oxygen nitrous oxide medical air carbon dioxide oxygen/nitrous oxide mixture [50 %/50 % (by volume)] specified mixtures of the gases listed above b) flow-metering devices intended to be used with the following gases oxygen-enriched air helium xenon Note:Regional or national regulations might permit use of oxygen-specific connection points for oxygen-enriched air. 1.3 This International Standard does not apply to electrical or electronic flow-metering devices. 1.4 This International Standard does not apply to gases used for driving surgical tools.