Abstract: A pump assembly is provided with an associated electrical connection plug, which is releasably connectable to an electrical plug coupling (10) of the pump assembly and includes a plug body (12) in which at least one electrical contact element (20), including a connection terminal (28) for receiving a connection wire (36), is arranged. The plug body (12) includes a receiver (40) for an opening element (42). The opening element (42) is insertable into the receiver in a removable manner, and the receiver (40) is arranged relative to the connection terminal (28) in a manner such that when the opening element (42) is inserted into the receiver (42), the opening element (42) acts on the connection terminal (28) and keeps this in an opened condition.

Abstract: A fiber optical accelerometer comprising a base structure, a first seismic mass movably coupled to the base structure through a first hinge element, a second seismic mass movably coupled to the base structure through a second hinge element, an optical fiber coupled to the first and second seismic masses at first and second attachment joints, respectively, to subject the optical fiber to varying strain by displacement of the first and second seismic masses about the first and second hinge structures, respectively.

Abstract: A pump assembly is provided with an associated electrical connection plug, which is releasably connectable to an electrical plug coupling (10) of the pump assembly and includes a plug body (12) in which at least one electrical contact element (20), including a connection terminal (28) for receiving a connection wire (36), is arranged. The plug body (12) includes a receiver (40) for an opening element (42). The opening element (42) is insertable into the receiver in a removable manner, and the receiver (40) is arranged relative to the connection terminal (28) in a manner such that when the opening element (42) is inserted into the receiver (42), the opening element (42) acts on the connection terminal (28) and keeps this in an opened condition.

Abstract: A fibre optical accelerometer comprising a base structure, a first seismic mass movably coupled to the base structure through a first hinge element, a second seismic mass movably coupled to the base structure through a second hinge element, an optical fibre coupled to the first and second seismic masses at first and second attachment joints, respectively, to subject the optical fibre to varying strain by displacement of the first and second seismic masses about the first and second hinge structures, respectively.