Name: ISO 4226:2007 — Air quality — General aspects — Units of measurement
SKU: ISO 4226:2007
Price: 25 EUR
Availability: InStock

★Низкие цены. Оригиналы и переводы — экономьте время и бюджет.

GLSTDStandards Store

Корзинапуста

ISO 4226:2007 PDF — Air quality — General aspects — Units of measurement — GOST Standards

Standardized Units for Air Quality Data ISO 4226:2007 specifies precise units for reporting various air quality parameters including gas concentrations, particle measurements, and meteorological data.
Units for Gases and Vapours
- Volume or mass fraction: Percent (%)
- Volume fraction of gaseous pollutants: Cubic centimetre per cubic metre (cm³/m³), cubic millimetre per cubic metre (mm³/m³)
- Molar fractions: Millimole per mole (mmol/mol), micromole per mole (µmol/mol), nanomole per mole (nmol/mol)
- Mass concentration: Milligram per cubic metre (mg/m³), microgram per cubic metre (µg/m³), nanogram per cubic metre (ng/m³), picogram per cubic metre (pg/m³)
- Diffusion coefficients: Centimetre squared per second (cm²/s), centimetre squared per minute (cm²/min)
Units for Particulate Matter
- Mass concentration: mg/m³, µg/m³, ng/m³, pg/m³
- Particle size: Micrometre (µm), nanometre (nm)
- Atmospheric dustfall: Gram per square metre per day (g/(m²·d)), milligram per square metre per day (mg/(m²·d))
- Deposition rate and velocity: µg/(m²·s), cm/s
- Number concentration of biological or other particles: Reciprocal cubic metre (m⁻³), reciprocal cubic decimetre (dm⁻³)
Specifications for Gas State
- Temperature: Kelvin (K), degree Celsius (°C)
- Pressure: Pascal (Pa), kilopascal (kPa)
- Relative humidity: Percent (%)
Meteorological Parameters
- Wind speed: Metre per second (m/s)
- Wind direction: Degrees (°)
- Precipitation intensity: Millimetre per day (mm/d), millimetre per hour (mm/h)
- Irradiance: Watt per square metre (W/m²)
- Atmospheric pressure: Hectopascal (hPa), kilopascal (kPa)
- Absolute humidity and mixing ratio: Gram per cubic metre (g/m³), gram per kilogram (g/kg)
- Visibility: Kilometre (km)
Time and Location Units
- Time: Second (s), minute (min), hour (h), day (d)
- Geographic coordinates: Degree (°), minute ('), second (")
- Universal Transverse Mercator (UTM) coordinates: Metre (m)
- Altitude: Metre (m)
Guidance Notes
- Usage of abbreviations such as ppm or ppb is discouraged.
- Concentrations expressed on a mass/volume basis require specification of ambient temperature, pressure, and humidity.
- Wind direction is reported as degrees clockwise from true north.

ISO 4226:2007 PDF

Abstract

Overview

Похожие стандарты

Key Topics

Applications

Related Standards

Технические детали

SIST ISO 4226:2013

Air quality - General aspects - Units of measurement

ISO 10007:2017

Quality management — Guidelines for configuration management

BS ISO 3108:2017

Steel wire ropes. Test method. Determination of measured breaking force.