Metallsuchgerät Metalldetektor Metallsucher Schatzsucher Detektor metal detector detecteur de metaux, detectores de metales security ,
NEXUS METAL DETECTOR
THE MOST SPECIAL DETECTOR WITH ADVANCED POWER BETTER OF THE BEST ! Take a look to the pictures and informations about our metal detector science.
All
Nexus metal detectors utilise a
fully tuned in resonance search coil
,build on a high temperature
resistant fiber glass plate, combined with an uniquely designed ABS casing, to
ensure as long as possible work period with out any change in the performance.
The Nexus metal detectors are suitable for beginners and experienced users.
However some experience in the metal detecting hobby can be beneficial. In any
case it is not necessary that beginners in the metal detecting hobby should
dedicate significant amount of time to learn How
to use the Nexus metal detector.
The early Nexus metal detectors were difficult to grasp for many people, but
over time they have evolved and the new Nexus Standard SE and the new Nexus
Coronado have become real master piece of the metal detecting engineering. Now
the Nexus metal detectors are easy to use, feature proof and with better build
quality than ever before. The Nexus metal detector was first introduced in the
fall of 2004. Back then there was only one model offered for sale. In present
days we have a range of few Nexus metal detectors for different applications and
also number of accessory search coils for them. You can also seek a
second opinion
to learn more about the Nexus metal detectors and the history of their
development
| NEXUS CORONADO | NEXUS STANDARD SE |
| NEXUS ULTIMA | NEXUS AQUARIA |
THIS ARE THE TEST WITH COMPARISION OF OTHER METAL DETECTORS
all of the mentioned above is
related to comparison between different detector types? Following the
graphic image on this page I would like to begin this explanation with the so
called Multi Frequency Technology (MFT) type of detectors. On the very first
place it is important to mention that amongst all detectors based on IB
principal, the MFT has the lowest efficiency, concerning depth penetration capabilities and discrimination
accuracy. The reasons: Setting a search head to work on various frequencies will
define low Q at all of the frequency setting. That will result in
average to poor depth penetration and unreliable discrimination.
Simultaneous frequency transmission from a TX loop is possible, but that kind of
transmission will make the work of any IB detector impossible. Also simultaneous
frequency transmission will most certainly result in a very low Q for the whole
system. MFT can not offer any real practical advantage to the IB type of
metal detectors as far as depth penetration and discrimination accuracy is
concernd. Another popular type of IB metal detectors are those with dual
frequency settings. All of the mentioned above conditions apply to this type of
detectors as well as to the MFT. The difference in this case is that having the
search head system to work only on two frequency setting (one at a time) will
provide an opportunity to have maximum Q on at least one of the two frequency
setting. That will give a good chance for better depth penetration and
discrimination accuracy. The most common type of IB detectors are the single
frequency metal detectors. Metal detector set to work at only one frequency,
have the best chances to achieve good depth penetration and
discrimination accuracy. The next popular type of metal detectors, capable to
compete for better depth, are the PI metal detectors. Relative to the
transmitted in the ground energy, the PI detectors are with lower efficiency
than the IB. However the fact that average PI metal detector can detect targets
deeper under ground than average IB detector, is due to the very high level
of the transmitted signals (few hundred volts pulses). With that allowance in
their basic principal the PI metal detectors can win almost any competition for
depth. However the greatest disadvantage for the PI detectors is the lack of
reliable discrimination. Regardless of all claims on the PI market, the PI
principal can not allow good discrimination to be achieved. The best metal detectors regarding depth penetration and discrimination accuracy
are the IB detectors tuned in total or as close as possible to total
electro-magnetic resonance. The reasons: It is not possible for any kind of loop
to achieve higher Q than the Q as a result of electro-magnetic resonance.
In comparison to a standard, not tuned in resonance search head system, one
tuned in total resonance can exhibit up to 100 times higher sensitivity to any
desired target. That fact alone lead to use of lower electronic amplification,
lower electronic instability and much better resistance to thermal changes for
the electronic circuit. A RX loop tuned in total resonance will act also as 10
th order band pass filter against any external interference, which will
almost eliminate the need of any interference prevention filters.
In comparison to off resonance RX loop, one tuned in total resonance is much
more sensitive to phase and amplitude changes, which fact can guarantee best
depth penetration and discrimination accuracy as can be achieved with any metal
detector
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