Indeed looking for metals whether for fun or as a source of income can surely be one exciting hobby for anyone. However, the device can be quite costly, depending on what kind you would prefer to purchase. You should expect to pay more for models that are considered to be extraordinary. You may want to remember that for this particular hobby, investing on the equipment can actually be beneficial since the more costly metal detector that you purchase all the more will you have the chance to purchase equipment that has been built with advanced technology which means that it has more features that you can enjoy.
It is important to take note that there are basically three kinds of technology being utilized in devices for metal detecting. There are devices that make use of the BFO technology which stands for Beat Frequency Oscillation, wherein there is a wire coil that is located at the detector’s control pack. Each of the coils is connected to the oscillator that is capable of producing a pulse of current. As these currents pass through the coil, it generates radio waves. After which, the waves are received by control pack of the device. The moment that the search coil gets to pass on top of a coin and even other metals, a process will make the device produce a tone which can be heard through its receiver.
You will usually encounter a detector with this kind of technology if you check those that are quite affordable. This is the case because this particular technology is very easy and cheap to produce as compared to the other innovations. However, the detectors capability is very limited as compared to other kinds of detectors. Its ability to identify whether a certain object is junk or not is not that reliable and in this case, you may want to think about purchasing one with such technology or not.
Another kind of technology being utilized for a device used in detecting metals is called the Pulse Induction technology. With this, you will observe that it would make use of only one set of coil or sometimes, sets of coils that would work together and shall serve as the device’s transmitter as well as receiver. Electrical currents are being sent through the coil which then causes the formation of magnetic fields and these shall eventually reverse polarity. It is important to take note that equipment with this particular type of technology is not suitable for discriminating between metals of various types or even coins. However, you will be pleased to know that this detector can actually work even in saltwater areas. Aside from this, it can even try to detect items even at a deep level of water.
In the last kind of technology used in detectors to be discussed is the Very Low Frequency technology which is composed of two coils, wherein one servers the purpose of transmission, while the other serves as the receiver of the metal detecting device.
