Metal detecting knife arches typically use pulse induction technology. Sending a burst of current through a wire coil, creating a magnetic field. When a metal object passes through the magnetic field, a reflected magnetic field is created, triggering a reaction with the receiver coil. This activates the alarm systems.

Typically, a pulse indication knife arch walk through metal detector emits 100 pulses per second. However, depending on the make and model, this can range from 25pps to over 1000pps.

Walk through metal detectors create a large magnetic field that covers the space inside the frame. If a person walks through with a metal item on them, the alarm will be set off, informing security personnel that the person is carrying a potentially dangerous metal object.

A knife arch with multiple zones can tell security personnel exactly where on the person metal is located. The more zones a metal detecting knife arch has, the more accurate it is.

Multi zone metal detecting knife arches contain multiple coils which create separate detection zones. They are able to detect multiple objects and display all areas where metal can be found. The alarm lights on the legs of the unit highlight to security where metal is on a person.

In short, metal detecting knife arches detect metal objects. This ranges from weapons like knives, guns and knuckle dusters to other potentially harmful or unwanted items such as needles, phones, vapes and lighters. By adjusting the sensitivity and frequency of the knife arch you can tailor the arch to suit your preferences.

A security metal detector arch adds an additional layer of security to your establishment. Walk through metal detectors have a range of practical applications including show and event security, festival security and security systems for schools. Revealing hidden, potentially harmful metal objects that may have been missed by the naked eye of a security guard. You may be a school worried about students bringing in contraband such as phones, lighters and vapes, or a nightclub concerned about needles and knives on your premises. A metal detecting arch will be able to alert your staff, providing you with peace of mind that your site is safe from these unwanted items.

With the continuous rise in knife culture particularly in young people, a metal detecting knife arch serves as a deterrent for students, who seek to bring this culture into schools. A knife arch can be part of an important security system for schools, helping highlight to staff which students are attempting to bring knives into the school, preventing these weapons from entering.

Further applications for security metal detectors in schools are the detection of items such as lighters, vapes and phones. These items can potentially be disruptive to a school environment. Therefore, a metal detecting knife arch can detect these items on a student. By detecting the metal inside a phone, regardless as to whether it’s turned on or off, and the metal coils in vape, a metal detecting knife arch will help staff keep these items out of schools.