Product Manual

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SIGNAL NULL
WITH LOCATOR
+ AS SHOWN
1-5/8
Figure18:PlacementofLocatorwhileSearchingalongaChainLinkFence
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LocatingValveBoxes
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Both the valve and its casing, when iron, provide strong magnetic
fieldsthatmakethemeasytolocate.Plasticenclosurescontaining
magnetsareeasilylocatedatdepthsof6feetormore.
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Figure19:Locating
ValveBoxesandCasings
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LocatingCast‐IronPipes
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AsillustratedinFigure20,cast‐ironpipesproducethestrongestmagneticsignalsattheirjoints.
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+or‐ +or‐
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 1to1‐1/2Feet
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Figure20:SignalPatternsProvidedbyCast‐IronPipes