The Model 4 System is designed for pipes 6 inches and up, using the PT-275 Transmitter.
Reliably and consistently track the passage of a pig or pinpoint its location.
To locate a pig equipped with a SPY® Transmitter, the SPY® 23 HZ Receive (Pig Tracker Receiver and Wand) registers the changing magnetic eld produced by any SPY® Transmitter. When the Transmitter is located, the 23 HZ Receive produces both an audio and visual output. With two standard 9-volt alkaline batteries, the 23 HZ Receive can be powered continuously for approximately 50 hours. Special waterproof wands are available for sub-sea applications, with depths of up to 10,000 feet [3000 meters].