how Needle Detector Metal Detector work

A Needle Detector or Metal Detector works by using a magnetic field to detect the presence of metal objects. 

Here's how it works:

When the detector is turned on, it creates a magnetic field in the detection area.

When a metal object is brought into the detection area, it disrupts the magnetic field and creates a signal.

The detector's electronics detect this signal and sound an alarm or signal to alert the operator of the presence of metal.

Depending on the design of the detector, the operator may be able to determine the size, shape, and location of the metal object.

Needle detectors are commonly used in the textile industry to detect metal objects, such as needles, in clothing and other textile products. This is important for ensuring the safety of the people who will use these products.