标准编号：ISO 21904-4:2020
中文名称：焊接和相关工艺中的健康和安全 焊接烟尘的捕捉和分离设备 第4部分：捕捉装置最小风量流量的测定
英文名称：Health and safety in welding and allied processes — Equipment for capture and separation of welding fume — Part 4: Determination of the minimum air volume flow rate of capture devices
发布日期：2020-02
标准范围
This document specifies two methods for establishing the minimum air volume flow rate. One method is dedicated for use with captor hoods, nozzles and slot nozzles with a ratio of slot length to hose diameter of 8:1 or less.
The other method is dedicated for use with on-gun extraction devices. These methods are not applicable to down draught tables.
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