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Gravity Fall Metal Detector
Stock Code: 8 PMD 2
The Gravity Fall Metal Detector is a professional inspection technology specifically developed for the plastics industry to monitor ferrous and non-ferrous metals (such as copper, aluminum, brass, and stainless steel) in the raw material flow with high precision. Operating on the principle of electromagnetic induction, this system safeguards masterbatch manufacturing processes in plastic injection, extruder, and blow molding lines. With its high-resistance stainless steel body, it detects ferromagnetic particles within milliseconds and automatically removes contaminated material from the line via an integrated separator valve. This cost-effective solution maximizes plant efficiency and raw material safety by preventing production downtime.
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DETAIL INFORMATION
GENERAL INFORMATION
The Puls In-Line Metal Detector is a high-performance detection system designed to guarantee raw material quality in closed pipelines and pneumatic conveying systems. By creating a continuous and stable electromagnetic field within the line, the system instantaneously detects metallic contaminants—such as iron, copper, aluminum, and brass—within the solid raw material passing through the pipe.
Upon metal detection, the integrated separator valve assembly is triggered to automatically divert contaminated material from the main line without interrupting the production flow. This technology enables businesses to operate under a zero-error principle, elevating quality assurance standards to an international level.
Its compact construction, manufactured from stainless steel in compliance with food and chemical standards, ensures seamless integration into confined installation spaces and complex piping networks. The system provides stable detection performance thanks to its isolated structure, which remains unaffected by surrounding metal components. Furthermore, the advanced software platform notifies operators via audible and visual alerts, minimizing potential downtime and ensuring a maintenance-free, long-lasting operation.
ADVANTAGES AND USAGE AREAS

The Gravity Fall (In-Line) Metal Detector is designed to inspect metal contaminants in bulk raw materials flowing through closed pipelines and pneumatic conveying systems. Utilizing electromagnetic induction technology, it detects all ferromagnetic and non-magnetic metals (such as copper, aluminum, stainless steel, and brass) with the highest level of precision. Upon detecting the presence of metal, the system triggers an integrated separator valve assembly to automatically remove contaminated material from the line without interrupting the production flow.

Thanks to its compact design suitable for tight installation spaces and a structure unaffected by surrounding metal components, it integrates easily into challenging industrial lines. With its stainless steel body compliant with food and chemical standards, it offers a long-lasting, reliable, and high-efficiency quality control process.

Advantages and Usage Areas:

  • Uninterrupted Production Flow: Eliminates the need to stop production while removing metal-contaminated material from the line through the integrated separator valve assembly.
  • Broad-Spectrum Detection: Millisecond response speed against all magnetic and non-magnetic metals, including iron, stainless steel, aluminum, copper, and brass.
  • Compact and Modular Design: Rapid integration into complex pipelines and narrow spaces without intervention, featuring electromagnetic field protection independent of environmental factors.
  • Food and Chemical Compatibility: Full compliance with hygienic cleaning processes and superior resistance to corrosion due to its stainless steel construction.
  • High Efficiency: Minimizes waste by automating the rejection process of faulty products and increases the operational profitability of the facility.
  • Pneumatic Conveying Integration: Lossless inspection in pneumatic or gravity-fed lines where powders, granules, and bulk materials are transported.
  • Instant Warning and Reporting: Real-time operator notification via visual and audible alerts; recording of metal detection data for quality assurance processes.
  • Sustainable Manufacturer Support: Direct technical service, rapid parts supply, and the assurance of 25 years of expertise by Puls Electronic.
Dimensions List
STANDARD (Model) Pipe Diameter (Effective) Outer Width Outer Height Outer Depth
PMD-50 50 mm 600 mm 1175 mm 700 mm
PMD-80 80 mm mm 600 mm 1175 mm 700 mm
PMD-100 100 mm 600 mm 1175 mm 700 mm
PMD-140 140 mm (Maks) 600 mm 1175 mm 700 mm
Sensitivity
Pipe Diameter (mm) Fe (Ferrous) Non-Fe (Non-Ferrous) SS (Stainless Steel)
50 - 100 mm 1,0 mm 1,5 mm 2,0 mm
100 - 140 mm0 1,5 mm 2,0 mm 2,5 mm

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Tunnel Type Metal Detector is a high-precision detection technology developed to ensure the safety of pre-packed or bulk products in the food, textile, and chemical sectors. Operating via the electromagnetic induction method, the system inspects all metal contaminants, including stainless steel, magnetic, and non-magnetic metals, with superior accuracy. It offers uninterrupted performance even in demanding operating conditions between -50°C and +70°C across a wide range of products, from frozen foods to pulses. With its high-resistance stainless steel body and locked security reject mechanism, it provides maximum protection and quality assurance on production lines, building an "Entity Authority."
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