7 factors to consider when setting your metal detector frequency

When setting up your metal detector, your core variable is the metal detector frequency. Here we look at 7 other factors you need to take into account.

1. Product characteristics

Every product creates a ‘background signal’. Don’t worry – this is not metal in your product, just characteristics which behave the same as metal when going through the detector! Food stuffs loosely fall into two categories – “dry product” and “wet product”. Dry products (eg, dried pasta, snacks) create a much lower background signal. By contrast, wet products (eg dairy, ready meals) create a much higher signal. If the detector frequency is too high, the background signal will trigger your detector. As a result, product will be falsely rejected.

TIP: Find out the background signal of your products – run them through the detector, increasing the frequency until it starts rejecting product.

2. Metal type

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