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3 Introduction
Introduction
3.1 VM-480B
The Vivax-Metrotech Model VM-480B Pipe and Cable Locator is a versatile locating instrument
designed for locating and tracing the path of pipes and cables; detecting energizing 60Hz power
lines; and when mounted on an optional carrying handle, conducting blind searches, ground
surveys, and locating underground metal masses. Depth measurement is accomplished using the
triangulation method.
The VM-480B is of split-box design, half being the transmitter and half being the receiver.
The transmitter generates a signal which is applied onto the pipe or cable to be traced - referred
to from now on as the "conductor". The signal travels along the conductor, becoming weaker as it
gets farther away from the transmitter. The distance that the signal travels before it becomes too
weak to be detected depends on the method of connection, the type of conductor, the surrounding
soil, and the depth of the conductor.
When you position the receiver over the targeted conductor, it will detect the signal from the
conductor, enabling the operator to trace the path of the pipe or cable. The signal strength reading
on the meter and the audio tone directs the operator to the path of the conductor.
As with all electromagnetic locating systems, this unit is designed to locate metallic conductors
only. The word "conductor, pipe, or cable" refers to a metallic conductor throughout this manual.
VM-480B
[email protected] | 13309 Beach Ave. Marina del Rey, CA 90292
wctproducts.com | Phone: 800-WCT-PROD (928-7763) | Fax: 310-306-9343
