Steve-B
15th May 2006, 04:56 PM
Electronic Pinpoint Probes.
Some types of detector and coil arrangement are more easily able to pinpoint a target than others, this does not mean that the detector with poorer pinpointing capabilities are any lesser a machine than one that can easily pinpoint, rather it means that the coil configuration works in a different way and what one may lack, the other may more than make up for.
This is due to the nature of the shape of the signal that is being transmitted into the ground, the Concentric coil transmits a conical (V) shaped signal, which can be slightly deepr at its point, but can mkiss signals at its edges as the signal goes down... it is wise to remember to overlap your sweep more fully when using this type of coil to maximise ground coverage.
A widescan coil, however transmits a wider signal, normally the width of the coil, this type of signal is normally slightly less deep seeking than the concentric coil, but offers better ground coverage (and is more stable in mineralised ground conditions.
From the coils signal patterns, it is evident that concentric coils in most cases offer better pinpointing feature than the Widescan coil.
There are several versions of this very useful tool, some are hand held and some are designed to encorperate with specific detectors.
All of them however perform the same function and that is to accurately locate the detected target within the hole.
Not only does this serve the purpose of making the find easier to locate for the detectorist, but also, eliminates the need in a lot of cases to enlarge the hole dug more than is necessary.
A pinpoint probe is basically a mini metal detector on average detecting only to a depth of one or two inches. There is no need for them to detect deepr than this as when your probe locates a target, you know you are within this distance of it, if a probe was to detect dramtically deeper than this then it would not really be of any benefit.
Again, some prefer to make their home made versions by addapting cable locators.
Prices normally start at around £35.00.
Some types of detector and coil arrangement are more easily able to pinpoint a target than others, this does not mean that the detector with poorer pinpointing capabilities are any lesser a machine than one that can easily pinpoint, rather it means that the coil configuration works in a different way and what one may lack, the other may more than make up for.
This is due to the nature of the shape of the signal that is being transmitted into the ground, the Concentric coil transmits a conical (V) shaped signal, which can be slightly deepr at its point, but can mkiss signals at its edges as the signal goes down... it is wise to remember to overlap your sweep more fully when using this type of coil to maximise ground coverage.
A widescan coil, however transmits a wider signal, normally the width of the coil, this type of signal is normally slightly less deep seeking than the concentric coil, but offers better ground coverage (and is more stable in mineralised ground conditions.
From the coils signal patterns, it is evident that concentric coils in most cases offer better pinpointing feature than the Widescan coil.
There are several versions of this very useful tool, some are hand held and some are designed to encorperate with specific detectors.
All of them however perform the same function and that is to accurately locate the detected target within the hole.
Not only does this serve the purpose of making the find easier to locate for the detectorist, but also, eliminates the need in a lot of cases to enlarge the hole dug more than is necessary.
A pinpoint probe is basically a mini metal detector on average detecting only to a depth of one or two inches. There is no need for them to detect deepr than this as when your probe locates a target, you know you are within this distance of it, if a probe was to detect dramtically deeper than this then it would not really be of any benefit.
Again, some prefer to make their home made versions by addapting cable locators.
Prices normally start at around £35.00.