Guard sensor device for use with a cable, pipe or wire transit, and a method of guarding a cable, pipe or wire transit

A guard sensor device for use with a cable, pipe or wire transit of a type that has one or more compressible transit elements for allowing a sealed installation of one or more cables, pipes or wires, said sealed installation requiring appropriate mounting and tightening of one or more tightening members, the guard sensor device comprising:

• a base part, the base part being configured to extend adjacent a first side of a stem of one of said one or more tightening members once said one of said one or more tightening members has been actuated to an extent appropriate for obtaining said sealed installation;
• a cover part, the cover part being configured to extend adjacent a second side of the stem of said one of said one or more tightening members, wherein the first side of the stem is opposite the second side of the stem, and the cover part being mountable onto the base part by means of a mechanical connection, thereby forming between said base part and said cover part an internal cavity for housing the stem of said one of said one or more tightening members after having been appropriately actuated;
• and
• a sensor disposed in either of said base part and said cover part, and being adapted to detect removal of the cover part with respect to the base part and in response generate an alert signal to indicate that the sealed condition of said installation has possibly been compromised.