A number of oilfield diving and marine applications are served by cable trackers and acoustic pingers.
The cable trackers locate and track power and communication cables. They detect the 50 or 60-cycle frequency of a live power cable. They also detect a tone induced onto the cable by a topside signal injector.
Pingers are used to mark location of underwater objects. Once activated, they transmit an acoustic signal for weeks or months. A diver carrying a pinger receiver can easily locate these transmitters.
One pipeline and specialty services company provides its customers inspection, cleaning, drying, and testing of pipelines — and tracks pigs traveling through offshore pipelines.
JW Fishers Manufacturing Inc.
1953 County Street
East Taunton MA 02718