# Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery, Division 9.4.3.2: Component requirements

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

Table 6.8 shows the specifications of transducers of torque, speed, and pressure, sensors of temperature and dew point, and other instruments. The overall system for measuring the given physical and/or chemical quantity shall meet the linearity verification in point 8.1.4. For gaseous emissions measurements, analyzers may be used, that have compensation algorithms that are functions of other measured gaseous components, and of the fuel properties for the specific engine test. Any compensation algorithm shall only provide offset compensation without affecting any gain (that is no bias).
Table 6.8
Recommended performance specifications for measurement instruments
Accuracy and repeatability are all determined with the same collected data, as described in point 9.4.3, and based on absolute values. ‘pt.’ refers to the overall mean value expected at the emission limit; ‘max.’ refers to the peak value expected at the emission limit over the duty cycle, not the maximum of the instrument's range; ‘meas.’ refers to the actual mean measured over the duty cycle.
Measurement Instrument
Measured quantity symbol
Complete SystemRise time
Recording update frequency
Accuracy
Repeatability
Engine speed transducer
n
1 s
1 Hz means
2,0 % of pt. or
0,5 % of max
1,0 % of pt. or
0,25 % of max
Engine torque transducer
T
1 s
1 Hz means
2,0 % of pt. or
1,0 % of max
1,0 % of pt. or
0,5 % of max
Fuel flow meter
(Fuel totalizer)
5 s
(N/A)
1 Hz
(N/A)
2,0 % of pt. or
1,5 % of max
1,0 % of pt. or
0,75 % of max
Total diluted exhaust gas meter (CVS)
(With heat exchanger before meter)
1 s
(5 s)
1 Hz means
(1 Hz)
2,0 % of pt. or
1,5 % of max
1,0 % of pt. or
0,75 % of max
Dilution air, inlet air, exhaust gas, and sample flow meters
1 s
1 Hz means of 5 Hz samples
2,5 % of pt. or
1,5 % of max
1,25 % of pt. or
0,75 % of max
Continuous gas analyzer raw
x
5 s
2 Hz
2,0 % of pt. or
2,0 % of meas.
1,0 % of pt. or
1,0 % of meas.
Continuous gas analyzer dilute
x
5 s
1 Hz
2,0 % of pt. or
2,0 % of meas.
1,0 % of pt. or
1,0 % of meas.
Continuous gas analyzer
x
5 s
1 Hz
2,0 % of pt. or
2,0 % of meas.
1,0 % of pt. or
1,0 % of meas.
Batch gas analyzer
x
N/A
N/A
2,0 % of pt. or
2,0 % of meas.
1,0 % of pt. or
1,0 % of meas.
Gravimetric PM balance
m PM
N/A
N/A
See 9.4.11
0,5 μg
Inertial PM balance
m PM
5 s
1 Hz
2,0 % of pt. or
2,0 % of meas.
1,0 % of pt. or
1,0 % of meas.

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/9/division/9.4/division/9.4.3/division/9.4.3.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.4/division-9.4.3/division-9.4.3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.