Figure 7
Experimental setup for sampling of oak volatiles generated during the toasting process.
Volatiles were continuously drawn into the sampling line by the vacuum pump flow and diluted according to the toasting temperature by a nitrogen gas flow containing the mass calibration standard. The vacuum pump and dilution gas flows were controlled by mass flow controllers (MFC1-3). MFC capacities were MFC1: 5 L, MFC2: 0.2 L and MFC3: 10 L. MFC2 was included in the dilution gas supply to permit accurate adjustment and control of flow via a low capacity MFC.
