A monitoring device, comprising: an input interface for receiving one or more measurement signals ( P A , P B ) from one or more sensors (S A , S B ; 8a, 8b, 8c) arranged in or associated with a first fluid containing system and/or a second fluid containing system , said one or more measurement signals ( P A , P B ) being responsive to a disruption of a fluid connection between the first fluid containing system and the second fluid containing system , a first disruption detector and a second disruption detector , each being configured to operate a respective detection logic on at least one of the one or more measurement signals ( P A , P B ) to detect apparent disruptions of the fluid connection and provide alarm indications corresponding to the apparent disruptions, an alarm module for generating an alarm signal (A) based on the alarm indications, characterised by a switching module configured to operate the monitoring device in one of a first mode, in which at least the first disruption detector is operated and the alarm signal (A) is generated based only on the alarm indications provided by the first disruption detector , and a second mode, in which at least the second disruption detector is operated and the alarm signal (A) is based at least on the alarm indications provided by the second disruption detector , wherein the switching module is further configured to, when operating the monitoring device in the first mode, obtain at least one of a first count (# FA1 ) of false alarm indications provided per unit time by the first disruption detector and a second count ( #FA2 ) of false alarm indications provided per unit time by the second disruption detector , and selectively, based on at least one of the first and second counts (# FA1, # FA2 ), switch the monitoring device to the second mode. an input interface for receiving one or more measurement signals ( P A , P B ) from one or more sensors (S A , S B ; 8a, 8b, 8c) arranged in or associated with a first fluid containing system and/or a second fluid containing system , said one or more measurement signals ( P A , P B ) being responsive to a disruption of a fluid connection between the first fluid containing system and the second fluid containing system , a first disruption detector and a second disruption detector , each being configured to operate a respective detection logic on at least one of the one or more measurement signals ( P A , P B ) to detect apparent disruptions of the fluid connection and provide alarm indications corresponding to the apparent disruptions, an alarm module for generating an alarm signal (A) based on the alarm indications, characterised by a switching module configured to operate the monitoring device in one of a first mode, in which at least the first disruption detector is operated and the alarm signal (A) is generated based only on the alarm indications provided by the first disruption detector , and a second mode, in which at least the second disruption detector is operated and the alarm signal (A) is based at least on the alarm indications provided by the second disruption detector , wherein the switching module is further configured to, when operating the monitoring device in the first mode, obtain at least one of a first count (# FA1 ) of false alarm indications provided per unit time by the first disruption detector and a second count ( #FA2 ) of false alarm indications provided per unit time by the second disruption detector , and selectively, based on at least one of the first and second counts (# FA1, # FA2 ), switch the monitoring device to the second mode. <EOS>