# Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance), Division 3.5: Measurement equipment specifications

Extent: E+W+S+N.I.

The measurement equipment shall meet the requirements of paragraph 9 of Annex 4 to UN/ECE Regulation 49 Rev.06.
Notwithstanding the requirements defined in paragraph 9 of Annex 4 to UN/ECE Regulation 49 Rev.06, the measurement systems listed in Table 2 shall meet the limits defined in Table 2.
Table 2
Requirements of measurement systems
‘Accuracy’ means the deviation of the analyzer reading from a reference value which is traceable to a national or international standard.
‘Rise time’ means the difference in time between the 10 percent and 90 percent response of the final analyzer reading (t90 – t10).
The ‘max calibration’ values shall be 1,1 times the maximum predicted value expected during all testruns for the respective measurement system.
Linearity
Measurement system
Intercept| xmin × (a1 – 1) + a0 |
Slopea1
Standard error of estimate SEE
Coefficient of determinationr2
Accuracy
Rise time
Engine speed
≤ 0,2 % max calibration
0,999 - 1,001
≤ 0,1 % max calibration
≥ 0,9985
0,2 % of reading or 0,1 % of max. calibration of speed whichever is larger
≤ 1 s
Engine torque
≤ 0,5 % max calibration
0,995 - 1,005
≤ 0,5 % max calibration
≥ 0,995
0,6 % of reading or 0,3 % of max. calibration of torque whichever is larger
≤ 1 s
Fuel mass flow for liquid fuels
≤ 0,5 % max calibration
0,995 - 1,005
≤ 0,5 % max calibration
≥ 0,995
0,6 % of reading or 0,3 % of max. calibration of flow whichever is larger
≤ 2 s
Fuel mass flow for gaseous fuels
≤ 1 % max calibration
0,99 - 1,01
≤ 1 % max calibration
≥ 0,995
1 % of reading or 0,5 % of max. calibration of flow whichever is larger
≤ 2 s
Electrical Power
≤ 1 % max calibration
0,98 - 1,02
≤ 2 % max calibration
≥ 0,990
n.a.
≤ 1 s
Current
≤ 1 % max calibration
0,98 - 1,02
≤ 2 % max calibration
≥ 0,990
n.a.
≤ 1 s
Voltage
≤ 1 % max calibration
0,98 - 1,02
≤ 2 % max calibration
≥ 0,990
n.a.
≤ 1 s
‘xmin’, used for calculation of the intercept value in Table 2, shall be 0,9 times the minimum predicted value expected during all testruns for the respective measurement system.
The signal delivery rate of the measurement systems listed in Table 2, except for the fuel mass flow measurement system, shall be at least 5 Hz (≥ 10 Hz recommended). The signal delivery rate of the fuel mass flow measurement system shall be at least 2 Hz.
All measurement data shall be recorded with a sample rate of at least 5 Hz (≥ 10 Hz recommended).

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Source: https://www.legislation.gov.uk/eur/2017/2400/annex/V/division/3/division/3.5 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-2400/annex-V/division-3/division-3.5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.