We have already explained, in previous articles, that gaussimeters are special instruments used for magnetic measurement, that is, it inspects and checks the flow density, being one of the most universal devices for this purpose.
Because a magnetic field is invisible, obtaining a complete quantitative representation of it requires the measurement of its force and direction. The ability to do that may sound like science fiction, but thanks to a discovery nearly 140 years ago, we have the tool we now use to determine the strength of magnets.
Before explaining how they work as such, it must be explained that gaussimeters work because of the Hall effect, a phenomenon discovered by Edwin Hall in 1879. In short, Hall discovered that a magnetic field will affect the flow of an electric current. Now, we know that magnetic measurement allows us to determine the force of a force and its impact.
Using this discovery, the Hall sensor was developed. Hall sensors have two different shapes: transverse and axial. A transverse probe is ideal for measuring magnetic fields perpendicular to a flat surface, and an axial probe is ideal for measuring magnetic fields parallel to the probe handle.
Your probe houses the corridor sensor needed to get a reading. Without a probe, magnetic measurement through gaussimeters is just a high-tech plastic box. When you choose a probe, you get what you pay for. Cheaper probes tend to be flexible and easy to break. More expensive and stiffer probes will resist wear better.
The connecting cable connects the gaussimeters to the probe. The length needed will depend on the work you are doing. If it often needs to be extended to get a reading, you may want a longer connecting cable. Cables come in lengths from a few inches to several meters.
Finally, the magnetic measurement will vary according to the model, but there are some features that are maintained, practically, in all of them:
There are two units of measurement that gaussimeters can read: Gauss and Tesla. They measure the same, but they do it in different increments. One Tesla equals 10,000 Gauss. Some gaussimeters will only read in one format or another, although Tesla has become the most common in this industry.
You should also keep in mind that different magnets will generate different readings, so make sure you have a gaussmeter designed with enough range to do the magnetic measurement, i.e., to read their magnets.
Any advice? When working with magnets, use magnetic measuring equipment that can read up to 2 Tesla (20,000 Gauss).
Here is a list of the 10 best gaussimeters for 2019, sorted from which we consider best:
In IMA we know the importance of doing the magnetic measurement, so we inform all our customers of all the functionalities of gaussimeters in a transparent way, so that they know, at all times, what kind of products they are buying, and what kind of results can be expected according to what they have purchased. For any information or questions, do not hesitate to contact us.