ISO 23431:2021 公路隧道空气质量的测量

标准编号：ISO 23431:2021

中文名称：公路隧道空气质量的测量

英文名称：Measurement of road tunnel air quality

发布日期：2021-03

标准范围

This document describes methods for determining air speed and flow direction, CO, NO and NO₂ concentrations and visibility in road tunnels using direct-reading instruments. This document specifically excludes requirements relating to instrument conformance testing.

标准预览图