NBN ISO 23431:2021
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NBN ISO 23431:2021

Measurement of road tunnel air quality

Summary

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.

Technical characteristics

Publisher Bureau de Normalisation Belge (NBN)
Publication Date 12/06/2021
Page Count 13
EAN ---
ISBN ---
Weight (in grams) ---
No products.

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