An apparatus for detecting high air flow is provided in a negative pressure wound therapy system (26) for wound treatment, comprising a wound dressing (24), a fluid collection vessel (38), a pump vacuum (30), one or more tubes (36) configured to at least channel a fluid flow between said wound dressing (24), said fluid collection canister (38), and said pump (30), a first sensor pressure (102) configured to measure the pressure in one or more of said one or more tubes (36) in a first location and to generate a first output signal, a second pressure sensor (104) configured to measure the pressure in said tubes ( 36) at a second location apart from said first location and to generate a second output signal, a difference circuit (312) configured to provide a difference signal (316), which reflects a difference between the first and the second output signal, a com circuit stop (324) configured to provide a comparison signal based at least in part on the difference signal (316) and a threshold signal, and an alarm circuit configured to produce an alarm that responds to the comparison signal, which is characterized in that the alarm reflects a high flow state and that between the first pressure sensor (102) and the second pressure sensor (104) there is a flow restriction to facilitate the determination of air flowSe proporciona un aparato para detectar alto flujo de aire en un sistema (26) de terapia de heridas porpresión negativa para el tratamiento de heridas, que comprende un vendaje (24) de herida, un recipiente (38) derecogida de fluido, una bomba de vacío (30), uno o más tubos (36) configurados para por lo menos canalizar un flujode fluido entre dicho vendaje (24) de herida, dicho bote (38) de recogida de fluido, y dicha bomba (30), un primersensor de presión (102) configurado para medir la presión en uno o más de dicho uno o más tubos (36) en unaprimera ubicación y para generar una primera señal de salida, un segundo sensor de presión (104) configurado paramedir la
