An attachment ring is provided for attaching a shield of an electrical cable to a backshell. The interrogator transmits a transmitted signal continuously, while receiving a received signal from a radio frequency identification tags. The profiling tool engages, respectively, in an essentially vertical and oscillating manner on the surface of the hollow part. As waste water collects in the float chamber, the float rises, as do a beam member and a pair of rod members to which the float is attached.