Dunham & Morrow DML2000-XR Manuale d'uso - Pagina 9

Sfoglia online o scarica il pdf Manuale d'uso per Strumenti di misura Dunham & Morrow DML2000-XR. Dunham & Morrow DML2000-XR 13. Magnetic locator

is near or under the fence, there will be a dramatic increase in the instrument's frequency as

you approach the target, and you will have no difficulty distinguishing your target from the

fence.

Figure 6: Horizontal Pipe

As illustrated in Figure 6, the peaking of the DML2000-XR output frequency normally indicates

that you are over the end of a pipe section, which can be either a weld or a "Bell" joint. When

searching for horizontal gas and water lines, look for a polarity change on the digital panel

meter.** A polarity change that occurs when the output frequency is low means you are

nominally over the midpoint of the pipe section. A polarity change when the output frequency is

high typically indicates a pipe joint or weld.

** DML2000-XRM (Applies to metered units only)