Eliminate the time lag and gas quality inaccuracies associated with feedback-only systems!
AFC stands for Active Flow Control. The AFC uses both ‘feed forward’ and ‘feedback’ control for fast response and unparalleled accuracy.
In conventional ‘feedback only’ control systems the response to an error can only be identified and corrected after the event occurs. For example, with a mixing valve type system, a gas quality problem is identified by a calorimeter after the problem occurs. Then a correction is attempted. This slow reaction coupled with correction attempts then causes more control oscillations and creates further unstable gas quality outputs! The AFC’s feed forward control design eliminates the problem!
Only the AFC delivers an accurate LPG-air mix immediately upon start-up and under rapid load changes…
When the AFC is started, the LPG flow meter sends a flow value to the control system. The control system responds instantaneously and pre-determines the position of the air flow control valve relative to the LPG vapor flowrate. Within seconds, the actual measured air flow rate is compared with the calculated flow rate and the control system makes the necessary adjustments. The AFC is now on line. Perfect gas — no wild swings and no “bad gas” typical of old conventional mixing valve systems.