Tunnel metal detector DMG

Performance features of the DMG tunnel metal detector

• Custom-made metal detector according to individual requirements.
• Robust and durable design for continuous operation 24/7 under difficult working conditions.
• High detection sensitivity of ferrous and non-ferrous metals as well as stainless steel.
• State-of-the-art DSP digital signal processing technology.
• No dead zones - high sensitivity in the entire area of ​​the transport tunnel.
• Adaptable to all types of belt conveyors.
• Transport tunnel width up to 2800 mm.
• Transport tunnel height up to 1000 mm.
• Hygienic design with materials approved for contact with food (FDA approved).
• High resistance to vibration, shocks, and temperature fluctuations.
• Operating temperature up to 80°C.
• Intuitive operation using a colour touch screen.
• Electronic adjustment of scanning sensitivity.
• Automatic teach-in mode (Auto-Set) to mask out intrinsic conductivity of products and environmental influence.
• Memory for 300 different products.
• Control audit in accordance with the requirements of HACCP, IFS, BRC systems.
• Event log with RTC real-time clock with power backup.
• Data transmission from the detector and connection to the company network.
• Remote operation, diagnostics and central data management.

Applications of the DMG metal detector

• Metal detection in meat, cold cuts, fish and meat products.
• Metal detection in cheese and other dairy products.
• Metal detection in frozen vegetables, fruits and ready meals.
• Metal detection in cookies, chocolate, ice cream and other confectionery products.
• Metal detection in rolls, bread and other bakery products.
• Testing of loose food products packed in plastic bags and cartons.
• Testing of liquid products in plastic and glass bottles.
• Detection of metals in dietary supplements and sports nutrition products.
• Detection of metals in raw materials and components at various stages of pharmaceutical production.
• Detection of metals in personal hygiene products and materials used in their production.

The tunnel metal detector allows you to examine individual packaging and collective packaging such as cartons and boxes. It is also possible to detect metals in products packed in metallized foil.

DMG metal detector during operation

Versions of the tunnel metal detector

• DMG-IP66 / IP69 type metal detector
  Dustproof and rainproof design.
• DMG-DUO type metal detector
  Multi-frequency technology for products packed in metallized foil.
• DMG-EX type metal detector
  Explosion-proof design in accordance with the requirements of the ATEX directive.

Metal detector accessories

• Belt or modular conveyor made of materials approved for contact with food.
• Optical and acoustic signal system.
• Contaminated product separation units - blowing nozzles, pushers.

Principle of operation of the DMG metal detector

The tested product (loose or in a package) transported on a belt conveyor moves through the metal detector tunnel. The detector creates a high-frequency electromagnetic field throughout the entire transport tunnel area - no dead zones. The electromagnetic field generated by the transmitting coil induces a certain signal in the receiving coil. The metal contained in the product deforms the electromagnetic field lines generated by the transmitting coil, thereby changing the amplitude and phase of the signal induced in the receiving coil. The received signal is analyzed by the detector's electronic system and converted into a metal detection signal. The metal detector detects iron and its alloys, including stainless steel and acid-resistant steel, and non-ferrous metals such as aluminium, copper, brass, zinc, lead, silver, etc. also inside the package.