ISO 23431:2021 PDF
Measurement of road tunnel air quality
Measurement of road tunnel air quality
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 37
- Дата публикации:
- 19 марта 2021 г.
- Издание:
- ISO IS 23431 edition 1 version 1
- ICS:
- 13.040.20
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.
Abstract
Overview
ISO 23431:2021 - Measurement of road tunnel air quality - specifies methods for measuring , , and concentrations, and in road tunnels using . The standard focuses on measurement procedures, instrument checks, calibration routines, maintenance, data expression and uncertainty estimation. It explicitly excludes requirements for instrument conformance testing.
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