Below are frequently asked questions about metal detection. If you have any questions or need assistance – please call at 414-672-0553 or email firstname.lastname@example.org and we will assist you with your metal detection needs.
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A metal detector is an electronic device for detecting the presence of metal. It is made up of a transmitter and receiver antenna. The electronics look at signal changes and decide if the changes are caused by metal. ✖
There are two reasons. The first is protection of your expensive processing equipment. The second is to protect the integrity of your product. One small piece of metal can be devastating to your company’s reputation and equipment if found in a product. ✖
If you are trying to protect equipment, then it should be placed as close to the infeed section as possible while still allowing ample space to stop before metal can enter. If you want to protect your final product, then it should be located as close to the end of the production line as possible — after the product has been packed. ✖
Make sure that the metal detector is appropriate for your unique application, the aperture size is appropriate for the various products that will be tested and that the detector is in the right location. Our experts can help you choose which metal detector is appropriate for your needs. ✖
The minimum diameter sphere that can be consistently detected at the center of the metal detector opening.
There are two kinds of sensitivity: “maximum” or “in-product”. Maximum is the best sensitivity possible under ideal conditions. In-product is the sensitivity obtained when actually inspecting the product. ✖
Metal detectors look for ferrous, non-ferrous, and stainless steel. Ferrous metals are magnetic metals like steel and iron. These are the easiest to detect. Non-ferrous metals are copper, aluminum, brass and bronze. And finally, stainless steel metals such as: 302, 304 and 316 are the hardest to detect. Generally, a piece of non-magnetic stainless steel must be 1.5 times larger, than a ferrous metal, in order to be detected by a metal detector. ✖
It should be collected and examined in order to trace the metal back to its source. If an automatic reject device (removes contaminated product automatically) is not feasible, then the product needs to be removed from the line and manually inspected. ✖
The main purpose of the HACCP initiative is to develop a procedure that identifies possible locations in your production line where product contamination can occur and to create a method of inspecting those locations on a regular basis to prevent contamination. Documentation of these inspections is a major feature of any HACCP plan. Modern metal detectors have a record keeping ability to provide a history of contamination incidents. ✖