5
1 INTRODUCTION
The Metrotech Model 810 Radio Frequency Line Tracer is an excellent instrument for tracing water and gas distribution lines, cables,
inductive locating, and blind searching. The high frequency signal is able to jump insulators and rubber gaskets often found in water and
gas distribution systems. Since the radio frequency travels easily through the soil, the 810 is an ideal instrument for inductive locating.
The floodlight Quality of the RF signal will induce signal onto conductors 8-10 ft. on either side of the Transmitter making it an
excellent instrument for blind searches.
The 810 Transmitter generates a signal which is applied onto the pipe or cable (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 surrounding soil, and depth of the conductor.
When positioned over the conductor, the Receiver will detect the signal from the conductor. The Receiver’s Left/Right Guidance
System, field strength display, and audio tone aid you in tracing. To display the depth of the conductor, you simply push a button.
The Model 810’s automatic impedance matching compensates for differences in soil conditions, conductor size and material.
As with all electromagnetic locating systems, this nit is designed to locate metallic conductors only. The word “conductor, pipe, or
cable” refers to a metalli
c conductor throughout this manual.
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