Products
Tunnel metal detector DMD
The DMD type tunnel metal detector is designed to detect ferrous and non-ferrous metals in piece goods or bulk materials transported on belt conveyors. The DMD detector protects process machines against damage caused by metal contamination, prevents production downtime, and ensures product quality. The metal detector is also used as an additional level of protection after the magnetic separator.
The DMD splitable metal detector is reliable, easy to use and designed for continuous operation. The metal detector is characterized by high scanning sensitivity across the entire width of the conveyor belt. The split design of the DMD detector allows for simple integration into an existing production line and belt conveyor system - there is no need to disconnect the belt and rebuild the conveyor.
Features of splitable metal detectors from Magnetix
- Custom-made metal detector according to individual requirements.
- Robust and durable design for continuous operation 24/7 under difficult working conditions.
- Optimal detection of ferrous and non-ferrous metals as well as stainless steel.
- High scanning sensitivity across the entire width of the conveyor belt.
- Special split design of the metal detector for easy installation on the conveyor belt.
- Adaptable to all types of belt conveyors.
- Transport tunnel width up to 2400 mm.
- Transport tunnel high up to 800 mm.
- High resistance to vibration, shocks, and temperature fluctuations.
- Operating temperature up to 80°C.
- Intuitive operation using a membrane keyboard.
- Electronic adjustment of scanning sensitivity.
- Automatic teach-in mode (Auto-Set) to mask out intrinsic conductivity of products and environmental influence.
- Memory for 10 different products.
Applications of splitable metal detectors
- Detection of metal contaminants in mining ore: limestone, basalt, hard and brown coal.
- Protection of processing machines such as crushers, shredders, mills and screens.
- Detection of metals at various stages of production of cement, limestone flour and construction mixtures.
- Metal detection at coaling stations in power plants and heating plants.
- Metal detection at biomass and alternative fuel unloading and feeding stations.
- Testing of rubber ribbon in the production process of car tires.
- Searching for metal in logs and timbers to secure sawmills and saws.
- Detection of metals in wood chips and shavings in chipboard production installations.
- Detecting metal in cullet to ensure 100% purity of the furnace feedstock.
- Metal detection in plastics - protection of extruders and calenders.
- Metal detection in waste recycling processes.
- Testing of agricultural produce at reception installations in processing plants (potatoes, sugar beets, cereals).
- Testing of fruit sent to cold stores and processing plants.
- Inspection of feed mixtures.
The DMD tunnel metal detector is widely used in industry, provides the highest sensitivity of detection of metal contaminants and guarantees the purity of the processed product.
DMD metal detector during operation
Versions of splitable metal detectors
- DMD-IP65 type metal detector
Dustproof and rainproof design. - DMD-EX type explosion-proof detector
Manufactured in compliance with the ATEX directive and certified by a notified body.
DMD metal detector accessories
- Optical and acoustic signal system.
- Digital incident counter.
- Belt conveyor control systems (belt stopping or reversing).
- Detected metal marking unit (sand bag dropping device or paint spray device).
- Electronic marking device with the display of the metal position on the conveyor belt (multiple marking).
Working principle of the splitable metal detector
The tested product transported on a belt conveyor moves through the metal detector tunnel. The detector creates a high-frequency electromagnetic field that covers the entire width of the conveyor belt. 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. The scanning sensitivity is adjusted using a digital control unit.
Why choose our splitable metal detectors?
The DMD tunnel metal detectors we offer can meet the expectations of every customer. A wide range of possible sizes of detector tunnels allows for simple and quick installation on existing transport systems. The split detector design and short metal-free zone further save time and cost of reinstalling the installation. It is possible to use 3 different control units to obtain optimal detection sensitivity and achieve the highest product purity. The stainless steel detector ensures IP65 protection and enables failure-free operation in high-humidity areas. Our DMD tunnel detectors can be equipped with interfaces enabling communication in technological networks. This allows you to save time by communicating with an individual device and monitoring work in real time. Factory certificates and approvals, which the customer receives upon request, are solid arguments during internal and external audits.