Standard
Track updates
AS/NZS 3580.12.1:2015
[Current]Methods for sampling and analysis of ambient air, Method 12.1: Determination of light scattering — Integrating nephelometer method
Sets out a continuous, direct-reading, instrumental method for determining the light-scattering attributable to the presence of particulate matter in a sample of ambient air. The light scattering coefficient as measured by this Standard is an indicator of the perceived visual degradation caused by suspended particles in the air.
Published: 10/06/2015
Pages: 9
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope
2 Referenced documents
3 Definitions
4 Principle
5 Apparatus
5.1 Integrating nephelometer
5.2 Calibration gas
5.3 Precision check gas
5.4 Zero air
5.5 Particulate filter
5.6 Reference barometer
5.7 Reference thermometer
5.8 Reference humidity device
6 Sampling
6.1 Location
6.2 Sampling line
6.3 Sampling environment
7 Calibration
7.1 General
7.2 Procedure
7.2.1 General
7.2.2 Recalibration
7.3 Pressure transducer checks and calibration
7.4 Temperature sensor check and calibration
7.5 Humidity sensor check and calibration
7.6 Operational precision checks
7.6.1 Instrument zero check
7.6.2 Instrument precision check
8 Instrument operation
9 Calculation and expression of results
10 Measurement uncertainty
11 Report
Appendix A
A1 Scope
A2 Humidity and uncertainty in scattering coefficient
A3 Temperature/barometric pressure considerations
A4 Bibliography
Cited references in this standard
[Current]
Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) - SUPPLEMENT 2: Extension to any number of output quantities
[Current]
Methods for sampling and analysis of ambient air, Part 1.1: Guide to siting air monitoring equipment
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