AS 3580.6.1:2023 sets out a method for determining ozone in ambient air using a direct-reading instrument. The method applies to the determination of ozone in ambient air within a nominal concentration range 0 to 0.5 ppm by volume (0 to 1 071 μg/m3 at 0 °C and 101.3 kPa). Modern instruments enable measurement over an expanded range, if required
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
5.1 Instrument
5.1.1 Flow control system
5.1.2 Internal computer and data logger
5.2 Sampling train
5.3 Zero air
5.4 Reference test atmosphere
6 Sampling
6.1 Location
6.2 Sampling environment
7 Procedure
7.1 Instrument operation
7.2 Instrument response checks and calibrations
7.2.1 General
7.2.2 Level 1 span and zero calibrations
7.2.3 Level 1 span and zero checks
7.2.4 Level 2 span and zero checks
7.2.5 Multipoint precision check
7.3 Instrument maintenance
7.3.1 General
7.3.2 Filter change
7.3.3 Sampling train
7.3.4 Instrument clock check
7.3.5 Analogue output calibration
7.3.6 Leak check
8 Results and calculations
9 Measurement uncertainty
10 Quality control and assurance
10.1 Instrument and station log
10.2 Proficiency audits
10.3 Data acquisition and transfer
10.4 Data validation
10.4.1 General
10.4.2 Data adjustment
10.5 Data retention
11 Test report
Appendix A
A.1 Scope
A.2 Principle
A.3 Traceability
A.3.1 Overview
A.3.2 BIPM and standard reference photometer
A.3.3 Local primary standard
A.3.4 Transfer standard
A.4 Reference and transfer instrument calibration frequency
