Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:16:p59
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 16 (pt 59/108)
Character Range: 1051876–1056114

band infrared analysers): interference check  Yearly                                 According to the instrument manufacturer.
QCL                                                                                                          Yearly                                 According to the instrument manufacturer.
GC methods                                                                                                   See paragraph 7.2. of this annex.      See paragraph 7.2. of this annex.
LC methods                                                                                                   Yearly                                 According to the instrument manufacturer.
Photoacoustics                                                                                               Yearly                                 According to the instrument manufacturer.
FTIR: linearity verification                                                                                 Within 370 days before testing         See paragraph 7.1. of this annex.
Microgram balance linearity                                                                                  Yearly                                 See paragraph 4.2.2.2. of this annex.
PNC (particle number counter) (if applicable)                                                                See paragraph 5.7.1.1. of this annex   See paragraph 5.7.1.3. of this annex.
VPR (volatile particle remover)                                                                              See paragraph 5.7.2.1. of this annex.  See paragraph 5.7.2. of this annex.

Table A5/4
Constant volume sampler (CVS) calibration intervals
CVS                 Interval        Criterion
CVS flow            After overhaul  ±2 per cent
Temperature sensor  Yearly          ±1 °C
Pressure sensor     Yearly          ±0.4 kPa
Injection check     Weekly          ±2 per cent

Table A5/5
Environmental data calibration intervals
Climate           Interval        Criterion
Temperature       Yearly          ±1 °C
Moisture dew      Yearly          ±5 per cent RH
Ambient pressure  Yearly          ±0.4 kPa
Cooling fan       After overhaul  According to paragraph 1.1.1. of this annex.

              5.2. Analyser calibration procedures
              5.2.1. Each analyser shall be calibrated as specified by the instrument manufacturer or at least as often as specified in Table A5/3.
              5.2.2. Each normally used operating range shall be linearized by the following procedure:
              5.2.2.1. The analyser linearization curve shall be established by at least five calibration points spaced as uniformly as possible. The nominal concentration of the calibration gas of the highest concentration shall be not less than 80 per cent of the full scale.
              5.2.2.2. The calibration gas concentration required may be obtained by means of a gas divider, diluting with purified N2 or with purified synthetic air.
              5.2.2.3. The linearization curve shall be calculated by the least squares method. If the resulting polynomial degree is greater than 3, the number of calibration points shall be at least equal to this polynomial degree plus 2.
              5.2.2.4. The linearization curve shall not differ by more than ±2 per cent from the nominal value of each calibration gas.
              5.2.2.5. From the trace of the linearization curve and the linearization points it is possible to verify that the calibration has been carried out correctly. The different characteristic parameters of the analyser shall be indicated, particularly:
              (a) Analyser and gas component;
              (b) Range;
              (c) Date of linearisation.
              5.2.2.6. If the responsible authority is satisfied that alternative technologies (e.g. computer, electronically controlled range switch, etc.) give equivalent accuracy, these alternatives may be used.
              5.3. Analyser zero and calibration verification procedure
              5.3.1. Each normally used operating range shall be checked prior to each analysis in accordance with paragraphs 5.3.1.1. and 5.3.1.2. of this annex
              5.3.1.1. The calibration shall be checked by use of a