Automatized system for the in-line detection of the losses on panels containing a cooling fluid circuit

A sealing connector with nozzle (3) injects a gas detectable by a hydrogen sensor (5). The sensor is mounted in a relatively mobile way with respect to he panel (1) on which losses are to be detected. A scanner scans the concerned surface of the respective channel of the panel so that the sensor signals the possible presence of loss in a certain superficial position (11) on the panel. An independent claim is also included for plant for production of panels containing circuit to receive circulation of cooling fluid for cooling air units.