Volume-flow-rate of the atomizing gas and its pressure were measured using the external
flow-meter (MEM Thru View, Meter Equipment Manufacturing, Inc., OH) and pressure gauge
installed between the flow-meter and the gun. These measurements are plotted in Figure 2.13 for
air as the atomizing gas. It can be observed that volume-flow-rate increases linearly with
pressure. Since the arcing occurs downstream of the nozzle, this relationship is not significantly
affected by other operating parameters (i.e. voltage, wfr, wire material).