Flow-metering devices for connection to terminal units of medical gas pipeline systems

Reaffirmation

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