Underground cable locating services are based on special equipment. The basic tools are known as cable locators and they have two components, powered by batteries and placed in weather resistant cases:
- The transmitter
- The hand-held receiver
At the top of the receiving unit, there is window which displays the information.
Receivers are typically strong enough to identify any cable and other different types of utilities, by using various modes and frequencies. Transmitter units are connected when a stronger signal is needed. Receivers are designed to detect the electromagnetic field radiating around the cable.
Information provided includes cable`s location, direction, depth and direction of the signal and amperage of the signal. If a transmitter also has a built-in voltage meter, it can also show information on the integrity of the cable.
There are different types of locators, with various features able to match every buyer`s needs. Typically, extra-features are more expensive. However, not all underground cable locating services need instruments capable of locating a variety of utilities, under different conditions and circumstances; in many cases, in order to locate the same type of utility and under similar conditions and levels of congestion, a single frequency instrument can do the job just great.
Call Colorado 811 before you dig – keep everyone safe!