Metal Detector JZ-M400FB

Keypack Intelligent JZ-M400FB Digital All-Metal Detector is an online conveyor metal detector engineered for high-reliability contaminant identification on automated production lines. It delivers precise detection of ferrous (Fe ≥ Φ0.8 mm), non-ferrous (Non-Fe ≥ Φ1.2 mm), and stainless steel (SUS304 ≥ Φ2.0 mm) particles with digital signal processing and automatic phase tracking. Ideal for food processing, pharmaceutical manufacturing, cosmetics production, and textile inspection where metal contamination control is a critical quality requirement.

Product Overview

The Keypack Intelligent (kunbupack) JZ-M400FB is a digital all-metal detector built to European and American food machinery safety standards. The system integrates advanced Digital Signal Processing (DSP) technology with an automatic product-effect compensation function — enabling reliable detection even for challenging products such as sugar, salt, and fresh meat, which can generate metal-like interference signals. With a 400 mm detection width and 80 mm detection height, the machine accommodates a wide range of packaged and unpackaged products on conveyor-based production lines.

The detector stores up to 99 product programs, allowing operators to switch between product types quickly without manual recalibration. Automatic phase tracking continuously optimizes detection sensitivity in real time, reducing false alarm rates and maintaining stable performance across varying production conditions. The LED flat key interface provides straightforward digital sensitivity control and multiple manual parameter adjustment options, making the system accessible for line operators while offering the precision required by quality engineers.

The entire frame is constructed from SUS304 stainless steel using laser cutting, welding, and wire drawing processes, providing a hygienic, corrosion-resistant structure suited to washdown environments. The conveyor belt is made from FDA-certified food-grade PVC material, offering strong resistance to contamination and wear. The metal detector probe is filled with epoxy resin, ensuring long-term stability and extended service life. IP65 protection rating makes the unit suitable for use in humid or dusty industrial environments.

Key Features and Machine Characteristics

• Automatic Product Recognition & Phase Tracking: The system automatically identifies product characteristics and continuously tracks the optimal detection phase, reducing setup time and minimizing false rejections during production changeovers.
• Product Effect Compensation (DSP Technology): Advanced digital signal processing compensates for the conductive properties of wet, saline, or high-sugar products — maintaining detection accuracy for food items such as meat, salt, and sugar that would otherwise interfere with standard metal detectors.
• 99-Program Multi-Product Memory: Stores up to 99 individual product profiles, enabling fast and repeatable switching between different SKUs on shared production lines without manual recalibration.
• Digital Sensitivity Control: Precise digital adjustment of detection sensitivity with multiple manual setting options, supporting different material types and detection requirements across various production environments.
• SUS304 Stainless Steel Frame with Hygienic Design: Laser-cut and welded stainless steel construction with a wire drawing finish provides structural durability, corrosion resistance, and compliance with food machinery hygiene standards.
• FDA-Grade PVC Conveyor Belt: The conveyor belt carries FDA food-grade certification, offering strong anti-contamination and dirt-resistance properties suitable for direct food contact environments.
• Epoxy Resin-Filled Probe: The detection probe is encapsulated in epoxy resin, protecting internal components from vibration, moisture, and environmental interference to extend equipment service life.
• Flip Rejection System: Automatic flip rejection mechanism removes detected contaminated products from the line without interrupting overall production flow.
• IP65 Protection: Sealed against dust ingress and low-pressure water jets, making the unit suitable for washdown and humid processing environments.
• Customizable Belt Height: Standard belt height of 750 ± 50 mm can be adjusted to match existing conveyor line heights, supporting flexible integration into new or existing production layouts.

Application Areas

• Food Processing: Detection of ferrous, non-ferrous, and stainless steel contaminants in packaged and bulk food products including meat, poultry, seafood, baked goods, snacks, sugar, salt, dairy, and frozen foods on automated conveyor lines.
• Pharmaceutical Manufacturing: Inline metal contaminant inspection for tablet, capsule, powder, and liquid pharmaceutical products during packaging and post-filling conveyor transport.
• Cosmetics Production: Metal foreign body detection for cream, powder, and liquid cosmetic products in sealed or semi-sealed packaging formats on production lines.
• Textile & Apparel: Identification of broken needles, metal fragments, and other metallic contaminants embedded in fabric rolls, garments, and stuffed products prior to shipment.
• Logistics & Distribution: Integration into logistics delivery systems for automated metal screening of mixed product flows, reducing manual inspection labor and improving throughput consistency.
• General Industrial Inspection: Suitable for any automated production or assembly line where metal contamination screening is required to meet product safety, quality, or regulatory standards.

Line Positioning & Integration Sequence

Metal detectors are positioned after the checkweigher and before the cartoning or case packing stage in a standard packaging line sequence:

VFFS Sealing → Checkweigher → Metal Detector → Cartoning / Case Packing

This placement ensures that every sealed bag passes through contamination inspection before secondary packaging, preventing contaminated products from reaching final packaging and distribution. For lines with both metal detection and X-ray inspection, the metal detector typically handles metal-specific screening while X-ray systems detect non-metallic contaminants like glass and stones.

Customization & Integration

Belt height can be customized beyond the standard 750 ± 50 mm range to match specific line configurations. Multiple detection aperture specifications are available to accommodate different product sizes and sensitivity requirements. The unit is designed for direct integration into existing conveyor-based assembly lines and automated production systems.

Delivery & Support

Lead time, installation support, operator training, spare parts availability, and warranty terms are available upon inquiry. Please contact our team for project-specific configuration recommendations and technical consultation.

Product Specifications

Note: Actual detection performance depends on the inspected product type (size, shape, conductivity), the metal type (material, shape), and the installation environment. Actual test results shall prevail.

Metal Detector for Inline Food Safety

Protect your brand from contamination risks and regulatory violations. The Keypack Metal Detector delivers reliable detection of ferrous, non-ferrous, and stainless steel contaminants for food, pharmaceutical, and chemical production lines.

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