Adjustable inert gas generation assembly for water-based fire protection systems

A water-based fire protection system, the system comprising:

• a pipe network configured for delivery of a water-based fire suppressive medium;
• a valve configured to control a flow of the water-based fire suppressive medium into the pipe network;
• and
• an adjustable inert gas generation assembly for producing a flow of inert gas for introduction into the pipe network, the assembly comprising:
• an inert gas generator having an outlet in fluid communication with the pipe network and configured for selectively producing a flow of inert gas to the pipe network at least at a first purity and a first flow rate while in a first mode and a second purity and a second flow rate while in a second mode, wherein the first purity is produced while the assembly is in a first mode and the second purity is produced while the assembly is in a second mode;
• wherein the second purity is higher than the first purity and the first flow rate is higher than the second flow rate, the first flow rate raising a current pressure within the pipe network to a supervisory pressure within a supervisory pressure fill requirement;
• and
• a control circuit in electrical communication with the inert gas generator and configured to selectively switch the inert gas generator between the first and second modes;
• at least one pressure sensor within the pipe network configured to generate a first input signal based on the current pressure and transmit the first input signal to the control circuit;
• wherein the control circuit is further configured to determine whether the current pressure within the pipe network is less than or at least equal to or greater than the supervisory pressure and to generate an output signal based on the determination of whether the current pressure within the pipe network is less than or at least equal to or greater than the supervisory pressure and to transmit the output signal to the inert gas generator to selectively initiate the first mode when the current pressure within the pipe network is less than the supervisory pressure and to selectively initiate the second mode when the current pressure within the pipe network is at least equal to or greater than the supervisory pressure.