Walk Through Metal Detectors at ADI – A Buyer’s Guide

Daniela Cardazzi

On August 4th In Access
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W Box Technologies 6-Zone Walk Through Metal Detector

For schools, offices or other facilities implementing advanced security programs, a walk through metal detector (WTMD) can be the first step in securing premises. Many decision makers who must purchase these devices are novices in the field of security. Here’s an overview of features and benefits specific to walk through metal detectors to help you guide your customers. Although WTMD prices range widely, finding a high performance, reliable WTMD to fit your customers’ budgets is possible.

The visual presence of a metal detection checkpoint at the entrance to a building can serve as a powerful deterrent to trouble. This deterrent effect can make even an inexpensive metal detector a worthwhile investment. In addition to providing safety, WTMDs can reduce anxiety and build a calm, focused, productive environment.

As compared to wand type detectors, walk through metal detectors have the obvious advantage of screening people through more rapidly, keeping entrances orderly and crowd free during peak traffic times. Pass Rate is the maximum number of people able to pass through the walk though metal detector during a given time frame without having any effect on detection performance. Pass Rate shows the ability of the metal detector to return to the standby state after in individual passes through and will influence the efficiency of the screening process.

Two parameters define the ability of the detector to discover targets. Sensitivity defines the size of the detected metal object. Discrimination is the ability of a metal detector to distinguish between different types of metals and other harmful goods and weapons. As sensitivity settings are increased, the size of the detected metal objects will become smaller.

Discrimination may be influenced by a number of factors including the sensitivity settings, changes in weather (humidity and temperature), and more. In addition to discovering dangerous target objects such as weapons, the proper level of discrimination can enable screening for other undesirable objects such as cell phones.

Multi-zone detection is a must-have feature that helps the checkpoint operator pinpoint where on the body the target object is being concealed. This is a key feature for rapid, efficient screening. For example, if a person is carrying change in their pocket and a gun on their ankle, the detector will indicate targets in two zones so the operator can direct their search to both areas at once without requiring multiple passes through the detector.

Where a WTMD is situated will influence a number of factors. Look for models with AC inlet points on both side panels for easier connection to power. Once the detector is set up in its final location, a calibration process is needed to achieve optimum performance. Parameter values will vary by the requirements and conditions of the operation site. Thereafter, routine calibration is essential to a well-managed WTMD checkpoint.

Parallel use must be planned carefully. When two or more WTMDs are placed too close together, their electromagnetic fields may influence their operation. Using different operation frequencies can reduce interference, so look for models that offer a range of frequency settings.

ADI offers the new fully featured W Box Technologies 6-Zone Walk Through Metal Detector

with an everyday low price – ideal for strict budgets.

WTMD Flyer Image