Description A series of convergent and convergent-divergent nozzles may beinstalled in one of two locations in a high pressure measuring chamber.A pressure regulator, throttle valve and back pressure valve allow theair flow rate, inlet and discharge (or back) pressure to be varied.Standard unit includes convergent – divergent ducts designed toproduce Mach 1.0 at the throat and supersonic velocities downstream.Inlet and outlet air pressures, temperatures and air flow rate arerecorded by a combination of instrumentation on the Compressible FlowRange F300 base unit and the optional module. Features Five nozzles Supplied as standard 1 x Convergent 4 x Convergent-Divergent Micrometer Adjustment Technical Specification 2 x Thermocouples Calibrated cantilever beam