This coolant flow rate set point shall be used throughout testing.

Said method also determines a current volume flow (70) and compares the current volume flow (70) to a desired volume flow (71).

The device also comprises a control means (44) for controlling the flow control mechanism based on flow set signals (S0) and the flow signals (S1) inputted from the outside.

By means of this calculated pressure drop, a flow set point (Qsp) and an inverse Cv curve of the valve, a new valve opening (ac) providing the desired flow is calculated.

The flow rate of the first step will appear on the display if the SET button is activated.

The admission of the flow of fuel from the tank is regulated in such a way that it is equal to the set value and a flow of fuel that is equal to the set value of the flow of fuel calculated by the calculator is injected into the engine.

This coolant flow rate set point shall be used throughout testing.

The injection flow rate is then brought back to the constant preset flow rate and compacting is increased to start a new cycle.

Said method also determines a current volume flow (70) and compares the current volume flow (70) to a desired volume flow (71).

The master MFC receives a pressure set point and a plurality N of flow ratio set points from a host controller, and communicates these set points to all the slave MFCs.

Thus, the autonomous control is so effected that the present pressure and present flow rate may lie on the target pressure-flow rate characteristic line.

A setpoint blowing throughput is also determined in order to optimize the total operation of the air diffusion installation.

Also taught is an assembly to automatically shut off fluid flow when the set value is reached.

The device also comprises a control means (44) for controlling the flow control mechanism based on flow set signals (S0) and the flow signals (S1) inputted from the outside.

A set-point signal is compared to the digitally enhanced flow rate signal to generate a digital error signal.