Arch metal detection

🎯 Purpose of the equipment

Walk-through metal detectors are designed to detect metal objects on a person without direct physical contact. Their main task is to ensure security in places with a high risk of carrying prohibited items (weapons, knives, explosive devices with metal elements).

🌍 Scope of use

• Airports, train stations
• Judicial, government institutions
• Correctional facilities
• Sports arenas, festivals, concerts
• Educational institutions
• Industrial enterprises (metal removal control)
• Military facilities

✅ Strengths of the equipment

• Verification speed — processing a large number of people in a short time.
• High accuracy in detecting metal objects.
• Sensitivity settings depending on the threat level.
• No harm to health due to minimal electromagnetic radiation.
• Possibility of object localization (zonal indication).

⚠️ Equipment weaknesses

• Inability to detect non-metallic threats (plastic weapons, non-metal explosives).
• False alarms due to everyday objects (keys, belts).
• Dependence on sensitivity settings: either missing a threat or an excessive number of false alarms.
• Sensitivity to strong electromagnetic interference at the installation location.

🔄 Equipment operation algorithm

1. Turning on the device and setting the sensitivity settings.
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2. Creating an electromagnetic field inside the arch.
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3. A person passes through an arch.
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4. Metal objects change the field parameters.
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5. The detector detects a change and issues an alarm signal (light/sound).
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6. The operator conducts an additional check manually or using a hand-held metal detector.

🔧 Types of equipment

• By the number of detection zones: 6, 18, 33 zones - the more zones, the more accurate the localization of the object.
• By technology type: single-frequency and multi-frequency detectors.
• By level of protection: for indoor use or moisture-proof for outdoors.
• By mobility: stationary and portable models.

📊 How to choose equipment

• Number of detection zones.
• Sensitivity.
• Capacity.
• Level of electromagnetic protection.
• Dust and moisture resistance.
• Power supply (mains or battery).
• Integration with other security systems.

⚙️ Effect of parameters

• Sensitivity: high ➔ many false alarms; low ➔ risk of missing a threat.
• Number of zones: minimum 18 zones for high-risk facilities.
• IP protection level: IP65 and above - for outdoor use.
• Electromagnetic immunity: mandatory near heavy metal structures.

🛠️ Customization and upgrade

• Adding autonomous power.
• Connection to turnstile and video surveillance systems.
• Adding additional alarms.
• Customization of sensitivity by zones.

📋 How to use

1. The operator turns on the device.
2. A person passes through an arch.
3. Metal detection ➔ light or sound alarm.
4. The operator performs a manual check or skips.

💼 Market overview

The market offers:
• Budget models — limited sensitivity and reliability.
• Middle class — balance of price and features.
• Premium models — high sensitivity, multi-frequency, integration with security systems.

Disadvantages:
• Budget models: high number of false positives.
• Premium models: difficulty in setting up without a specialist.

🤫 Insights

1. Most "highly sensitive" models become impractical to operate without professional tuning - they either interfere with or miss threats.
2. Models with more than 60 zones are often created only for marketing effect: in real conditions, accurate localization requires additional software or external analytics systems.

Hand-held metal detection

🎯 Purpose of the equipment

Hand-held metal detectors (scanners) are designed to quickly detect metal objects on a person, in objects, or on surfaces by direct scanning by the operator. The main purpose is to locate metal threats (weapons, blades, electronics) or prevent the removal of metal elements from controlled areas.

🌍 Scope of use

• Control at checkpoints in buildings and institutions
• Airports, train stations
• Judicial institutions
• Correctional facilities
• Industrial enterprises
• Educational institutions
• Concerts, mass events
• Military facilities and warehouses

✅ Strengths of the equipment

• Light weight and mobility
• Ease of use
• Accurate local object detection
• Low cost compared to arch detectors
• Ability to check specific areas of the body or items

⚠️ Equipment weaknesses

• Requires physical operator involvement
• Slower screening of large flows of people
• Smaller scanning radius compared to arch detectors
• Dependence on operator skills (can miss object)

🔄 Equipment operation algorithm

[1] Powering on the device and testing ➔
[2] Setting the sensitivity mode ➔
[3] Scanning the surface of an object or person ➔
[4] Metal detection (audible/visual/vibratory signal) ➔
[5] Location location ➔
[6] Manually inspect or remove an object

🔧 Types of equipment

• By sensitivity: standard / high sensitivity (with detection of small objects)
• By signaling method: sound, vibration, light indication
• By protection class: normal / dust-proof models (IP65)
• By power type: replaceable batteries or accumulators
• By detection zone size: compact/extended models

📊 How to choose equipment

• Sensitivity (for detecting weapons or small metal objects)
• Alarm type (for noisy or quiet environments)
• Work autonomy (depending on shift duration)
• Housing protection level (moisture, dust)
• Device weight (for comfort during long-term use)

⚙️ Effect of parameters

• Sensitivity: Medium sensitivity is sufficient for personnel control in industry; maximum sensitivity is sufficient for airports.
• Alarm type: vibration is needed for secret or very noisy objects.
• Autonomy: minimum 8-12 hours without charging for a normal shift.
• IP protection level: IP54 for indoors, IP65 for outdoors or production.

🛠️ Customization and upgrade

• Adjusting the sensitivity level manually or automatically
• Switching the alert type (sound/vibration/light)
• Battery replacement or upgrade to a model with more capacity
• Adding charging stations or cables for continuous operation

📋 How to use

1. The operator turns on the device and performs a self-test.
2.  The desired sensitivity mode is set.
3.  The scanner is brought close to the body/object (~5 cm).
4.  The entire surface is scanned according to safety regulations.
5. When an alarm is triggered, a specific location is localized and checked.

💼 Market overview

• Budget models: basic sensitivity, short lifespan, limited protection.
• Mid-range: good battery life, multi-signaling, dust and moisture resistance.
• Premium level: maximum sensitivity, fine-tuning capabilities, vibration, high autonomy.

Disadvantages:

• Budget models often have unstable sensitivity.
• Premium scanners without proper setup can be overly sensitive and give many false alarms.

🤫 Insights

1. Many handheld scanners significantly reduce sensitivity when the battery is low, but do not warn you about this.
2. Highly sensitive models without a vibration signal lose efficiency significantly in noisy environments due to missing small triggers.