Document ID: chunk:federal_register_of_legislation:F2023L01526:body:0:p56
Version: federal_register_of_legislation:F2023L01526
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Character Range: 156398–159549

calibration gas with the highest concentrations to be at least 80 per cent of the full scale.

       3.2. Calculate the calibration curve by the method of least squares. If the resulting polynomial degree is greater than three, then the number of calibration points shall be at least the number of the polynomial degree plus two.

       3.3. The calibration curve shall not differ by more than two per cent from the nominal value of each calibration gas.

       3.4. Using the coefficients of the polynomial derived from paragraph 3.2. above, a table of analyser readings against true concentrations shall be drawn by steps no greater than 1 per cent of full scale. This is to be carried out for each analyser range calibrated.

           This table shall also contain other relevant data such as:

           (a) date of calibration;

           (b) span and zero potentiometer readings (where applicable);

           (c) nominal scale;

           (d) reference data of each calibration gas used;

           (e) real and indicated value of each calibration gas used together with the percentage differences;

           (f) calibration pressure of analyser.

       3.5. Alternative methods (e.g. computer, electronically controlled range switch) can be used if it is proven to the technical service that these methods give equivalent accuracy.

Annex 8 ‑ Appendix 2

Essential characteristics of the vehicle family

       1. Parameters defining the family relative to hydrogen emissions

       The family may be defined by basic design parameters which shall be common to vehicles within the family. In some cases there may be interaction of parameters. These effects shall also be taken into consideration to ensure that only vehicles with similar hydrogen emission characteristics are included within the family.

       2. To this end, those vehicle types whose parameters described below are identical are considered to belong to the same hydrogen emissions.

       REESS:

           (a) trade name or mark of theREESS;

           (b) indication of all types of electrochemical couples used;

           (c) number of REESS cells;

           (d) number of REESS subsystems;

           (e) nominal voltage of the REESS (V);

           (f) REESS energy (kWh);

           (g) gas combination rate (in per cent);

           (h) type(s) of ventilation for REESS subsystem(s);

           (i) type of cooling system (if any).

       On-board charger:

           (a) make and type of different charger parts;

           (b) output nominal power (kW);

           (c) maximum voltage of charge (V);

           (d) maximum intensity of charge (A);

           (e) make and type of control unit (if any);

           (f) diagram of operating, controls and safety;

           (g) characteristics of charge periods.

Annex 9

REESS test procedures
Annex 9 ‑ Appendix 1

Procedure for conducting a standard cycle

A standard cycle shall start with a standard discharge followed by a standard charge. The standard cycle shall be conducted at an ambient temperature of 20 ± 10 °C.

Standard discharge:

Discharge rate: The discharge