If you have got a metal detector in your hands, you will look for ways to discover minerals and resources around you. There is no doubt that having a metal detector opens a world of opportunities for you to discover its hidden assets and properties.
Gold, being one of the most important and valuable elements, holds a status in human society; no matter the condition, the worth of it will never see a decline. Having said that, a question arises in everyone’s mind, can you find gold with a metal detector?
The answer to this question is yes, but searching for gold with a metal detector is not an easy task, and not everyone can do it. There are special types of metal detectors that are made explicitly for detecting gold.
You may have seen the security guards at the airports using metal detectors to detect different metal elements. To prevent smuggling, they also look for gold.
Either you are using a metal detector for security purposes, or you want to explore the gold around you; everybody wants to know how does a metal detector works for gold.
If this is what you are looking for, then you have arrived at the right place; as here in this article, we are going to briefly put down the answer to this question.
Once you know how does a metal detector works for gold, you will be able to use your metal detector in a perfect way for your purpose.
To fully understand the answer, you need to understand the working principle of a metal detector. Once you know how a metal detector works, it will be easier for you to understand that how it works for gold. Therefore, first, we will see how a metal detector works.
How does a Metal Detector Work?
Metal detectors are the devices or instruments used to detect a specific metal or other elements. It works by transmitting electromagnetic waves, and if a searching element lies within the range of electromagnetic waves, it will reflect back the waves giving you the signal of the presence of a specific object.
For more information on its working, we need to know about the parts of a metal detector. Some of the main components of a metal detector are discussed below.
The control box is an essential part of a detector and is referred to as the brain of a detector. It is where the electronic components are placed and controls the transmitting and receiving waves.
It is also the role of the control box to process the signal and alarms you about the possible detection of an object. The metal detector is of no use without a control box.
The metal detector shaft is where all the parts are attached. It varies in length and can be adjusted as per the comfortability of a user.
It is the role of the search coil to transmit and receive electromagnetic signals. It normally lies at the bottom, and it is the search coil that you place near to the ground or where you are searching for an object.
Factors Affecting the Detection
There are certain factors that play a role in the detection of a specific element, the most imperative of which are mentioned here.
- The first thing is the frequency. Frequency is the number of cycles produced in a signal over a certain period of time. The frequency of a metal detector is one of the main attributes to detect an object.
- The conductivity rate and size of a targeted object play a role in the detection of an element.
- Similarly, the type of soil and the ground has an effect, and it varies depending on the individual condition.
- The other important thing is the ground balance or the depth at which the target material is located and the depth at which the electromagnetic waves can reach. Depth again varies on the particular material, size, shape, and orientation.
How a Metal Detector Works For Gold
By now, you know the working of a general metal detector. Now we will see how a metal detector works for gold.
As mentioned earlier, discovering any element with a metal detector is not an easy task, and you need to be aware of the general properties of a searching element and a little about waves, signals, and electronics.
When searching for a specific material like gold, the detector may detect an unwanted target; therefore, using an explicit metal detector made for exploring a particular product is preferable so that it can ignore the unwanted targets.
Let’s see how does a metal detector work for gold.
Metal detectors made for searching the gold typically use one of the two methods or the technology. The one is called the Very Low Frequency (VLF), and the other one is called the Pulse Induction (PI). Both of these techniques are discussed below.
Very Low-Frequency Technique
VLF technique, as the name defines itself, uses the frequency to detect the objects. It is one of the most used methods to detect gold. It contains transmitting and receiving coils, and based on it, it can tell the presence or the absence of an object.
The question arises that how will it ignore the unwanted targets? For this, it uses the phase-shifting technique. It is a technique that specifies the timing of frequency and based on the properties of the targeted object, it can verify the presence of it and can ignore unwanted targets.
Pulse Induction Technique
The pulse induction technique uses one or more than one coil working as a receiver and a transmitter. Unlike VLF, it sends pulses of current which then creates the magnetic field.
The reflected signal determines the presence or absence of a target. This technique is less common than the VLF, and it requires a deeper understanding of the signal and electronic terms.