This correction is required even where filtered extracted flow is fed back into the partial flow dilution systems.

This correction is required even where filtered extracted flow is fed back into the partial flow dilution systems.

Alternatively, the control software might account for the flow removed by the PN system

Maximum ventilation exhaust air available

Mass flow rate fed back into dilution tunnel to compensate for particle number sample extraction

Maximum ventilation exhaust air available

Maximum ventilation exhaust air available

Sample mass flow rate extracted from dilution tunnel

Maximum ventilation exhaust air available

Sample mass flow rate extracted from dilution tunnel

mass flow rate fed back into dilution tunnel to compensate for particle number sample extraction, kg/s.

The extracted data signal has a symbol rate corresponding to a frequency of the extracted clock signal (e.g.,- the symbol rate may be twice the frequency of the extracted clock signal).

The extracted sample shall be proportional to the raw or dilute exhaust flow rate.

Mass of particulates corrected for extraction of particle number sample flow

mass flow rate fed back into dilution tunnel to compensate for particle number sample extraction, kg/s.