Division 7.3.1.4 Preparation of measurement equipment for samplingF1

The following steps shall be taken before emission sampling begins:

1. (a)

   Leak checks shall be performed within 8 hours prior to emission sampling in accordance with point 8.1.8.7;

2. (b)

   For batch sampling, clean storage media shall be connected, such as evacuated bags or tare-weighed filters;

3. (c)

   All measurement instruments shall be started in accordance with the instrument manufacturer's instructions and good engineering judgment;

4. (d)

   Dilution systems, sample pumps, cooling fans, and the data-collection system shall be started;

5. (e)

   The sample flow rates shall be adjusted to desired levels, using bypass flow, if desired;

6. (f)

   Heat exchangers in the sampling system shall be pre-heated or pre-cooled to within their operating temperature ranges for a test;

7. (g)

   Heated or cooled components such as sample lines, filters, chillers, and pumps shall be allowed to stabilize at their operating temperatures;

8. (h)

   Exhaust gas dilution system flow shall be switched on at least 10 minutes before a test sequence;

9. (i)

   Calibration of gas analyzers and zeroing of continuous analyzers shall be carried out in accordance with the procedure of point 7.3.1.5;

10. (j)

    Any electronic integrating devices shall be zeroed or re-zeroed, before the start of any test interval.