Which of the following is NOT a major component of an electromagnetic locator?

An electromagnetic locator is an essential tool used in various applications, including locating underground utilities and pipelines. The main components of such a locator include a transmitter, receiver, and antenna, which work together to identify the location of buried objects by emitting and detecting electromagnetic signals.

The transmitter generates an electromagnetic signal that is sent into the ground. The receiver, equipped with an antenna, is then used to detect this signal as it emanates from the buried object, allowing an operator to pinpoint its location. The antenna amplifies and directs the electromagnetic field, aiding in the identification process and enhancing the effectiveness of the locator system.

Conversely, a probe rod is not a standard component of an electromagnetic locator. While probe rods are utilized in various other applications, such as physically uncovering underground utilities or assisting in determining soil composition, they do not play a role in the electromagnetic signal detection process that is central to the functionality of an electromagnetic locator. Hence, identifying a probe rod as not being part of the major components highlights an important distinction in the functioning of electromagnetic locators.