Automatic cylinder changeover device for monitoring gas installation

An automatic cylinder changeover device, comprising:

• a left gas inlet and a right gas inlet, for mounting gas cylinder banks;
• a gas outlet through which gas is discharged;
• a valve, wherein the valve connects the left gas inlet with the gas outlet to form a first connection, and connects the right gas inlet with the gas outlet to form a second connection, the valve automatically reversibly switching between said first connection and said second connection;
• and
• an indicator for being set exclusively manually in one of two distinct positions, one of the positions indicating the left gas inlet and the other of the positions indicating the right gas inlet,
• wherein the device comprises at least one sensor for detecting the position of the indicator,
• wherein the position of the indicator is unrelated to the inlet of the actual gas bank used as a gas source at a given moment,
• wherein the at least one sensor for detecting the position of the indicator comprises pairs of a first element and a second element selected from the group consisting of:
• a magnet and a magnetic sensor, an inductive means and an inductive sensor, and a pair of contacts, and
• wherein the first element and the second element are located and arranged with respect to each other such that the second element detects a presence of the first element, when the first element is adjacent to the second element, and
• the device further comprising a knob and wherein the first element is mounted in a ring located under the knob.