New to all this... Looking for advice!

jfjohn77

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Dec 21, 2023
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I'm hoping someone can help me out here. I'm not looking for Gold, but I need a detector to pick up some Copper wire. I have a Construction Company in South Texas and we are digging in areas that have buried pipelines. Several of these lines are fiberglass and have copper wire (as a tracer) laid with these lines to be able to trace them later and prevent damage when excavation of the area is necessary. Normally, one can use a line-finder to locate them, but only if you know the beginning or termination points of the line. Because in those instances, where the line enters and exits the ground there are terminals to attach your ground enabling the line-finder to operate correctly and detect the copper line. In our situation we do not know where these entry or exit locations are, so we can only use metal detectors to find the steel pipelines, but it is not working for the fiberglass of course. I was thinking that since Copper is a Non-ferrous metal, as is Gold, that a Gold locator would work. Is my thinking correct? The real problem I believe, is in the fact that this Copper wire is around three (3) foot deep and only 10 gauge. It's not very large in diameter, but it is a continuous run. Does anyone have any suggestions as to the best Gold detector for my needs? Cost is of no concern as the cost of repair to the damaged lines will more than offset the cost of the detector.

Thank you in advance for your time.
 

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Finding a piece of wire three feet down is a very tall order for consumer metal detectors. There may be machines that can do it, but none I've heard of. Once you get within a foot or so, then they would have a much better chance.
 

I'm hoping someone can help me out here. I'm not looking for Gold, but I need a detector to pick up some Copper wire. I have a Construction Company in South Texas and we are digging in areas that have buried pipelines. Several of these lines are fiberglass and have copper wire (as a tracer) is laid with these lines to be able to trace them later and prevent damage when excavation of the area is necessary. Normally, one can use a line-finder to locate them, but only if you know the beginning or termination points of the line. Because in those instances, where the line enters and exits the ground there are terminals to attach your ground enabling the line-finder to operate correctly and detect the copper line. In our situation we do not know where these entry or exit locations are, so we can only use metal detectors to find the steel pipelines, but it is not working for the fiberglass of course. I was thinking that since Copper is a Non-ferrous metal, as is Gold, that a Gold locator would work. Is my thinking correct? The real problem I believe, is in the fact that this Copper wire is around three (3) foot deep and only 10 gauge. It's not very large in diameter, but it is a continuous run. Does anyone have any suggestions as to the best Gold detector for my needs? Cost is of no concern as the cost of repair to the damaged lines will more than offset the cost of the detector.

Thank you in advance for your time.
"Gold" shouldn't enter into it. Most—if not all—detectors have the ability to detect and differentiate (to some degree) ferrous & non-ferrous metals.

I was going to ask about depth. There's a "rule of thumb" that a detector can detect to a depth equal to the diameter of the coil. This is not a hard & fast rule, but I agree that 3 ft. is pushing it.

That said, what you want is a "Deep Seeking Metal Detector"

One possible unit (there are more--this is just one I've heard of) is XP's new(-ish) Xtrem Hunter, which they claim will reach depths up to 5 meters (16 ft.)

Also, Nokta Invenio Pro claims depths of up to 10-12 meters (33-40 ft.).

Yes, these are pricey units.
 

I'm hoping someone can help me out here. I'm not looking for Gold, but I need a detector to pick up some Copper wire. I have a Construction Company in South Texas and we are digging in areas that have buried pipelines. Several of these lines are fiberglass and have copper wire (as a tracer) laid with these lines to be able to trace them later and prevent damage when excavation of the area is necessary. Normally, one can use a line-finder to locate them, but only if you know the beginning or termination points of the line. Because in those instances, where the line enters and exits the ground there are terminals to attach your ground enabling the line-finder to operate correctly and detect the copper line. In our situation we do not know where these entry or exit locations are, so we can only use metal detectors to find the steel pipelines, but it is not working for the fiberglass of course. I was thinking that since Copper is a Non-ferrous metal, as is Gold, that a Gold locator would work. Is my thinking correct? The real problem I believe, is in the fact that this Copper wire is around three (3) foot deep and only 10 gauge. It's not very large in diameter, but it is a continuous run. Does anyone have any suggestions as to the best Gold detector for my needs? Cost is of no concern as the cost of repair to the damaged lines will more than offset the cost of the detector.

Thank you in advance for your time.
Why don't you call Texas one-call? (811) Every State has a one-call system that will come and locate copper, fiber and water lines for free, if you don't call you will be financially responsible for damages. Copper and water are not too bad, but damage to fiber can be astronomical. I use to work for a fiber company and I would locate our lines to protect them.
 

Yes... That's a given, and has been done. Problem is no one responded for several of the lines we have hit.
 

Yes... That's a given, and has been done. Problem is no one responded for several of the lines we have hit.
I would call them again. I use to work for a fiber optic company and located fiber and copper.
 

A novice dowser with a couple of bent coat hangers for rods can follow any pipe line underground. Try it or have your fellow workers try it because usually at least 1 out of 5 people can easily dowse. The rods stay crossed over the pipe as you walk it, or they will point left or right to guide you over the top of it. Every contractor I've ever known has a dowser.
 

A novice dowser with a couple of bent coat hangers for rods can follow any pipe line underground. Try it or have your fellow workers try it because usually at least 1 out of 5 people can easily dowse. The rods stay crossed over the pipe as you walk it, or they will point left or right to guide you over the top of it. Every contractor I've ever known has a dowser.
I thought about mentioning this. In an earlier life I worked as a construction inspector. There was one contractor who could do this--infallibly. Blew me away every time. Despite the guys patience in trying to teach me, I just don't have the... whatever it is. No amount of, "Ya gotta believe" helped. ???

I'm probably just envious. 🙄
 

I thought about mentioning this. In an earlier life I worked as a construction inspector. There was one contractor who could do this--infallibly. Blew me away every time. Despite the guys patience in trying to teach me, I just don't have the... whatever it is. No amount of, "Ya gotta believe" helped. ???

I'm probably just envious. 🙄
Yes, I use to douse utility lines, but it is almost impossible to teach it on line, in person is much easier.
 

I'm hoping someone can help me out here. I'm not looking for Gold, but I need a detector to pick up some Copper wire. I have a Construction Company in South Texas and we are digging in areas that have buried pipelines. Several of these lines are fiberglass and have copper wire (as a tracer) laid with these lines to be able to trace them later and prevent damage when excavation of the area is necessary. Normally, one can use a line-finder to locate them, but only if you know the beginning or termination points of the line. Because in those instances, where the line enters and exits the ground there are terminals to attach your ground enabling the line-finder to operate correctly and detect the copper line. In our situation we do not know where these entry or exit locations are, so we can only use metal detectors to find the steel pipelines, but it is not working for the fiberglass of course. I was thinking that since Copper is a Non-ferrous metal, as is Gold, that a Gold locator would work. Is my thinking correct? The real problem I believe, is in the fact that this Copper wire is around three (3) foot deep and only 10 gauge. It's not very large in diameter, but it is a continuous run. Does anyone have any suggestions as to the best Gold detector for my needs? Cost is of no concern as the cost of repair to the damaged lines will more than offset the cost of the detector.

Thank you in advance for your time.
Gradiometer perhaps? GPR?
 

I'm hoping someone can help me out here. I'm not looking for Gold, but I need a detector to pick up some Copper wire. I have a Construction Company in South Texas and we are digging in areas that have buried pipelines. Several of these lines are fiberglass and have copper wire (as a tracer) laid with these lines to be able to trace them later and prevent damage when excavation of the area is necessary. Normally, one can use a line-finder to locate them, but only if you know the beginning or termination points of the line. Because in those instances, where the line enters and exits the ground there are terminals to attach your ground enabling the line-finder to operate correctly and detect the copper line. In our situation we do not know where these entry or exit locations are, so we can only use metal detectors to find the steel pipelines, but it is not working for the fiberglass of course. I was thinking that since Copper is a Non-ferrous metal, as is Gold, that a Gold locator would work. Is my thinking correct? The real problem I believe, is in the fact that this Copper wire is around three (3) foot deep and only 10 gauge. It's not very large in diameter, but it is a continuous run. Does anyone have any suggestions as to the best Gold detector for my needs? Cost is of no concern as the cost of repair to the damaged lines will more than offset the cost of the detector.

Thank you in advance for your time.
I don't know of ANY standard detector that will find a wire at that depth. Pipe/wire trace detector is the only way I know of that is reliable, but, yeah, you have to find one end to clip the power to it. A deep seeker won't find something that small. It's designed for something much bigger.
 

I don't know of ANY standard detector that will find a wire at that depth. Pipe/wire trace detector is the only way I know of that is reliable, but, yeah, you have to find one end to clip the power to it. A deep seeker won't find something that small. It's designed for something much bigger.
Thanks for the correction. For some reason, I'd envisioned the copper wire coiled around and cast into the pipe.

Do you think one of the oversized (>30" dia.) coils might do it?
 

My experience was in the late '70s; there was no online. 😉
I worked Telcom for 44 years, I was locating utilities in the early 90s to early 2001.
 

Thanks for the correction. For some reason, I'd envisioned the copper wire coiled around and cast into the pipe.

Do you think one of the oversized (>30" dia.) coils might do it?
No
 

The thing about wire is it's much more difficult to detect in the middle because the eddy currents travel down the length of the wire. You have to be right on top of it (within a couple inches) to get any reading.
 

There is a line of professional dedicated detectors for this purpose. The wire "tracer" in the plastic pipeline is usually powered by dedicated transmitter that comes along with the detector to make the pipeline visible (detectable). It is hooked up in a nearest shaft, manhole or whereever the pipeline can be reached.
 

There is a line of professional dedicated detectors for this purpose. The wire "tracer" in the plastic pipeline is usually powered by dedicated transmitter that comes along with the detector to make the pipeline visible (detectable). It is hooked up in a nearest shaft, manhole or whereever the pipeline can be reached.
Yup, as long as you can find an end to which you attach the "send" cable. Without charging the wire, the wire/pipe detector isn't even as good as any other detector.
 

The best thing you have to do is hire an excavator and throw the gravel in a stable place and pass the detector so you will get the gold.
 

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