Metal detectors are an important part of food safety. They can help you prevent any issues with contamination and ensure that your product is safe for consumption.

There are many different types of metal detectors, but they all have the same goal: to detect metal objects in food products.

Here are some things to keep in mind when shopping for a new food metal detector:

Sensitivity target for each metal type

If you want to detect multiple metal types with one device, it’s important that the sensitivity targets are set up in such a way that they don’t overlap. For example, if you’re looking for both zinc and copper, your sensitivity targets need to be set up so that they don’t overlap. Zinc has a lower sensitivity target than copper, which means that it will pick up on less zinc than copper. If they overlapped, then you would get false positives because zinc would be picked up as copper and vice versa.

Temperature variations in the product or inspection area

In order to achieve maximum accuracy with your food metal detectors, it’s important that they are calibrated properly in relation to temperature variations. This can be difficult because there are many factors that could cause temperature variations — for instance, if there’s too much air flow around your product or if there is something heating up nearby (like an oven).

Primary detection function

The primary detection function is whether the unit is designed to detect metal in the food product or in the equipment used to process the product. Most food metal detectors are designed to detect metal in food products, with some models offering both types of inspection capabilities.

Wet or dry inspection area

There are some food metal detectors that are designed specifically for use on dry foods while others are meant for wet applications like meat processing plants. The main difference between these two types is that wet applications require more maintenance than dry applications because there will be liquids present during the inspection process which increases the risk of corrosion on sensitive parts like cables and electrical components inside the unit.

Types of Food Detector

There are different types of food detectors that can be used for different situations and locations. These include:

Conveyer system detectors

These are used to detect foreign objects or contaminants in the production line. They work when they come in contact with foreign objects such as metal or glass. Conveyer system detectors can also detect glass breakage by using a laser light source or an ultrasonic sensor.

Free-fall or gravity system detectors

These systems use a combination of sensors and hardware to monitor parts of a process that require constant attention, such as wash tanks, tank bottoms and hoppers. They allow for more efficient monitoring because they use gravity to keep track of your product without needing to be cleaned often due to dirt accumulation from processes like spraying water onto your product during cleaning stages.

Pipeline/pumped system detectors

In this type of system, the process fluid is pumped through a pipe or hose that is made up of metal and plastic components. The food particles are detected using metal detectors, which are connected to the pipeline and operate at high frequencies. When metal is detected, an alarm is triggered and the flow is stopped.

Bulk/high performance system detectors

In this type of system, food particles are detected using metal detectors that operate at lower frequencies (20 kHz to 1 MHz). These systems use metal tubes that are placed in front of each product line or conveyor belt. In addition to stopping the flow when metal is detected, these systems also help determine where in the process the problem occurred.


There are various types of food detector available in the market. Now, you can get all those detectors easily at reasonable price and use them to detect the quality of food. So, you should have a clear knowledge as to what kind of food detector you need. You can either buy the equipment, or you can hire someone who will be capable of doing it. It all boils down to how complex the method is, and what exactly you want to detect.


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