Document ID: chunk:federal_register_of_legislation:F2024C00356:reg:3:p18
Version: federal_register_of_legislation:F2024C00356
Segment Type: reg
Provision Reference: reg 3 (pt 18/18)
Character Range: 442849–444721

shall not differ by more than 2 per cent from the nominal value of each calibration gas.

              4.4. Using the coefficients of the polynomial derived from paragraph 3.2. above, a table of indicated reading against true concentration shall be drawn up in steps of no greater than 1 per cent of full scale. This is to be carried out for each analyser range calibrated. The table shall also contain other relevant data such as:
               (a) Date of calibration, span and zero potentiometer readings (where  applicable);
               (b) Nominal scale;
               (c) Reference data of each calibration gas used;
               (d) The actual and indicated value of each calibration gas used together   with the percentage differences;
               (e) FID fuel and type;
               (f) FID air pressure.

              4.5. If it can be shown to the satisfaction of the technical service that alternative technology (e.g. computer, electronically controlled range switch) can give equivalent accuracy, then those alternatives may be used.

Annex 7 - Appendix 2
Diurnal ambient temperature profile for the calibration   Alternative diurnal ambient temperature profile for the calibration of the enclosure in accordance with Annex 7, Appendix 1, paragraphs 1.2. and 2.3.9.
of the enclosure and the diurnal emission test
Time (hours)                                              Temperature                                                                                                                                              Time (hours)  Temperature
                                                           (°Ci)                                                                                                                                                                  (°Ci)
Calibration                                               Test