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BS EN 17507:2021 Road vehicles. Portable Emission Measuring Systems (PEMS). Performance assessment, 2021
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms, definitions and symbols [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols and abbreviations
- 3.3 List of subscripts
- 4 Document structure including requirements, responsibilities and results
- 5 On-road testing process using PEMS
- 6 PEMS requirements and specifications [Go to Page]
- 6.1 General requirements [Go to Page]
- 6.1.1 General
- 6.1.2 Boundary conditions
- 6.1.3 Temperature
- 6.1.4 Altitude / Pressure
- 6.1.5 Humidity
- 6.2 Auxiliary equipment
- 6.3 Global Navigation Satellite System
- 6.4 Exhaust gas parameters [Go to Page]
- 6.4.1 Exhaust flow meter [Go to Page]
- 6.4.1.1 General
- 6.4.1.2 Specification
- 6.4.1.3 Linearity
- 6.4.1.4 Calibration and verification standards
- 6.4.1.5 Frequency of verification
- 6.4.1.6 Accuracy
- 6.4.1.7 Precision
- 6.4.1.8 Noise
- 6.4.1.9 Zero response drift
- 6.4.1.10 Span response drift
- 6.4.1.11 Rise time
- 6.4.1.12 Response time check
- 6.5 General requirements for gas analysers [Go to Page]
- 6.5.1 Permissible types of analysers [Go to Page]
- 6.5.1.1 Standard analysers
- 6.5.1.2 Alternative analysers
- 6.5.2 Analyser specifications [Go to Page]
- 6.5.2.1 General
- 6.5.2.2 Linearity of analysers
- 6.5.2.3 Accuracy
- 6.5.2.4 Precision
- 6.5.2.5 Noise
- 6.5.2.6 Zero response drift
- 6.5.2.7 Span response drift
- 6.5.2.8 Rise time
- 6.5.2.9 Gas drying
- 6.5.2.10 Additional requirements
- 6.5.3 Response time check of the analytical system
- 6.6 Analysers for measuring (solid) particle emissions (particle number) [Go to Page]
- 6.6.1 General
- 6.6.2 Efficiency requirements
- 6.6.3 Linearity requirements
- 6.6.4 Volatile removal efficiency
- 6.6.5 Zero response drift
- 6.6.6 Span response drift
- 7 PEMS Performance testing [Go to Page]
- 7.1 Uncertainty assessment for PEMS performance testing according to GUM
- 7.2 General requirements [Go to Page]
- 7.2.1 Vibration and shock tests
- 7.2.2 PEMS battery voltage test [Go to Page]
- 7.2.2.1 General
- 7.2.2.2 Method A: Using a Power Supply Unit (PSU) with a Controllable Voltage
- 7.2.2.3 Method B: Using a Battery (or Batteries if specified by the PEMS manufacturer)
- 7.3 Gaseous analysers [Go to Page]
- 7.3.1 General requirements and prerequisites on the performance testing of a gaseous PEMS
- 7.3.2 Performance test execution, test matrix and test setup [Go to Page]
- 7.3.2.1 Performance test execution
- 7.3.2.2 Performance test matrix overview
- 7.3.3 Tests [Go to Page]
- 7.3.3.1 Vibration and shock tests
- 7.3.3.2 Inclination tests
- 7.3.3.3 Ambient temperature and humidity tests and step changes
- 7.3.3.4 Ambient pressure tests
- 7.4 Particle number analysers [Go to Page]
- 7.4.1 General
- 7.4.2 Setup for vibration and shock tests
- 7.4.3 Setup for ambient humidity and ambient temperature variation tests
- 7.4.4 Setup for pressure tests [Go to Page]
- 7.4.4.1 For polydisperse aerosol
- 7.4.4.2 For monodisperse aerosol
- 7.4.5 Setup for sample humidity tests
- 7.4.6 Outline Procedures
- 7.4.7 Tests [Go to Page]
- 7.4.7.1 Vibration and shock tests
- 7.4.7.2 Inclination tests
- 7.4.7.3 Ambient temperature and humidity tests and step changes
- 7.4.7.4 Ambient pressure tests
- 7.4.7.5 Sample gas humidity variation tests
- 7.5 Exhaust mass flow meter (EFM) [Go to Page]
- 7.5.1 General requirement
- 7.5.2 PEMS installation
- 7.5.3 Data analysis
- 7.6 Global Navigation Satellite System (distance measurement)
- 8 Motivation and methods for uncertainty evaluation [Go to Page]
- 8.1 Alpha and Beta-Error
- 8.2 Transfer to emission testing
- 8.3 Measurement uncertainty as part of the measurement result
- 8.4 Methods for uncertainty evaluation (GUM type A and B)
- 9 Uncertainty evaluation of PEMS measurements (Type A – experimentally) [Go to Page]
- 9.1 Measurement uncertainty during PEMS validation and on-road conditions
- 9.2 Uncertainty contributions on the testing process (Ishikawa-Diagram) [Go to Page]
- 9.2.1 General
- 9.2.2 Measurement system [Go to Page]
- 9.2.2.1 PEMS type
- 9.2.2.2 Set-up of the PEMS
- 9.2.2.3 Reference system
- 9.2.2.4 Linearity error
- 9.2.3 Measurement object (vehicle emission)
- 9.2.4 Measurement method [Go to Page]
- 9.2.4.1 Measurement phase
- 9.2.5 Operator
- 9.2.6 Environment [Go to Page]
- 9.2.6.1 Weather conditions
- 9.2.6.2 Temperature
- 9.2.6.3 Test route
- 9.2.6.4 Vibration
- 9.3 Determination of the combined measurement uncertainty I - PEMS validation [Go to Page]
- 9.3.1 General
- 9.3.2 Uncertainty of the reference value (calibration of reference, uCAL)
- 9.3.3 Repeatability at the standard (PEMS validation, uEVR)
- 9.3.4 Uncertainty from systematic deviation (Bias uBi)
- 9.3.5 Combined uncertainty of the measuring system (uMS)
- 9.3.6 Influence of the measurement object on the measurement system
- 9.4 Determination of the combined measurement uncertainty II – PEMS on board [Go to Page]
- 9.4.1 General
- 9.4.2 Repeatability of on-road measurement (uEVO)
- 9.4.3 Effect of the measurement object (vehicle emissions) on the PEMS
- 9.4.4 Effect of the test route
- 9.4.5 Influence of weather conditions (especially ambient temperature)
- 9.4.6 Effect of the test phases (urban, rural, highway)
- 9.4.7 Combined uncertainty of the measuring process (uMP,road)
- 9.4.8 Combined uncertainty of the measuring process if a reference system is available for the on-road measurement (uMP)
- 10 Uncertainty evaluation of on-road testing (Type B – non experimentally) [Go to Page]
- 10.1 General
- 10.2 Calculation of the combined uncertainty of the individual mass mi.
- 10.3 Calculation of combined uncertainty of total mass M (u∑m)
- 10.4 Evaluation of covariance to calculate the combined uncertainty of M
- 10.5 Sources of uncertainty, weight (ω) and LO value (γ) [Go to Page]
- 10.5.1 General
- 10.5.2 Sources of uncertainty, weight (ω) and LO value (γ) for concentration measurement (gas analysers)
- 10.5.3 Sources of uncertainty, weight (ω) and LO value (γ) for flow measurement (EFM)
- 10.6 Systematic error uΔM due to dynamics and time alignment error Δi
- 10.7 Uncertainty of the emission measurement UE
- Annex A (normative)Procedure of linearity verification [Go to Page]
- A.1 General requirements
- A.2 General procedure
- Annex B (normative)Additional requirements for gas analysers [Go to Page]
- B.1 CO/CO2 analysers [Go to Page]
- B.1.1 CO analyser interference check
- B.2 NO/NO2 analysers [Go to Page]
- B.2.1 Efficiency test for NOx converters
- B.2.2 CLD analyser quench check
- B.2.3 Sample dryer
- B.2.4 Sample dryer NO2 penetration
- B.2.5 Quench check for NDUV analysers
- Annex C (normative)Determination of the reference uncertainty of chassis dynos uCAL [Go to Page]
