Residues from pollution abatement processes (e.g. scrubber sludges, baghouse dusts, spent filters, etc.)

Calculation of the Mass Flow The particulate mass MPT (g/test) shall be calculated as follows: PT where: Mf = particulate mass sampled over the cycle (mg) MTOTW = total mass of diluted exhaust gas over the cycle as determined in section 2.2.1 (kg) MSAM = mass of diluted exhaust gas taken from the dilution tunnel for collecting particulates (kg) and, Mf = Mf,p + Mf,b , if weighed separately (mg) Mf,p = particulate mass collected on the primary filter (mg) Mf,b = particulate mass collected on the back-up filter (mg) If a double dilution system is used, the mass of the secondary dilution air shall be subtracted from the total mass of the double diluted exhaust gas sampled through the particulate filters ...[+++].

For the single and multiple filter methods, the sample mass flow rate through the filter shall be maintained at a constant proportion of the dilute exhaust mass flow rate for full flow systems for all modes.

The diluted exhaust shall be sampled by a pair of filters placed in series (one primary and one back-up filter) during the test sequence.

All parts must be made of electrically conductive materials that do not react with exhaust gas components, and must be electrically grounded to prevent electrostatic effects.

F2 heated filter The filter shall extract any solid particles from the gas sample prior to the analyser.