EN ISO 9169:2006 PDF

Overview

EN ISO 9169:2006 (ISO 9169:2006) defines and specifies methods to determine the performance characteristics of an identified automatic air quality measuring system (AMS). The standard treats the AMS as a black box operated according to specified procedures and covers tests performed under stable laboratory conditions and selected field conditions. It applies when a system description, operating procedures (including adjustment, verification and calibration) and a test programme (terms of reference) are available. The standard also requires the availability of reference materials with accepted values and known uncertainty across the system’s intended range.

Key Topics and Requirements

• Definitions and terminology for measuring systems, primary results, averaging time, interferents and influence quantities (based on VIM concepts).
• Clear specification of terms of reference for test programmes: client requirements, test conditions and operating procedures.
• Test methods under stable laboratory conditions to determine:
  • Response time and minimum averaging time
  • Repeatability, lack of fit and limit of detection
  • Drift and repeatability of calibration procedures
  • Sensitivity coefficients for interferent and external influence quantities
• Field-condition evaluations for:
  • Standard deviation of paired measurements
  • Drift and availability during routine operation
• Requirement to use multiple reference materials (RMs) with known uncertainties when applicable.
• The standard does not prescribe how many AMS units must be tested - the client sets that in the terms of reference.
• Expectation of a formal test report documenting methods, results and uncertainties.

Applications and Who Uses It

EN ISO 9169:2006 is practical for organizations involved in air quality measurement, including:

• Environmental and regulatory agencies specifying acceptance criteria for monitoring equipment
• Independent testing laboratories conducting performance verification and type testing of AMS
• Manufacturers and developers of continuous or discontinuous air quality analyzers (ambient air, emissions)
• Procurement and quality assurance teams evaluating measuring systems for monitoring networks
• Consultants and project managers defining test programmes and acceptance conditions

Practical benefits include standardized evaluation of measurement accuracy, reliability, interferent sensitivity, and operational readiness, helping buyers and regulators compare and validate AMS performance.

Related Standards

• ISO 9169:2006 supersedes earlier editions (ISO 9169:1994) and ISO 6879:1995.
• References concepts from the VIM (International Vocabulary of Metrology) and ISO 11095 (reference material definitions).
• Prepared by ISO/TC 146 (Air quality) and endorsed by CEN as EN ISO 9169:2006.

Keywords: air quality, automatic measuring system, ISO 9169:2006, EN ISO 9169, performance characteristics, response time, repeatability, calibration, reference materials, measurement uncertainty.