Probably the most versatile type is the Body Metal Detector Scanner, where the material is gravity fed through the inlet of the detector. Metallic particles are detected and immediately rejected by an air-operated rejection system. Adjustable sensitivity coupled with short rejection time ensures minimal loss of good product.
Free-fall units can be purchased in single-coil or balanced-coil designs with either analog or digital electronics. Free-fall units can vary in aperture size from 25 to 300 mm (1 to 12 in.). Some types use a quick-clean rejection system that facilitates cleaning of the reject system.
Metal detectors for pneumatically conveyed materials take the shape of a collar around the conveying line. Again, these detectors are available in single- or balanced-coil design with analog or digital electronics. Positive speed control is accessible on some models to precisely time the reject-gate closing and opening to be able to minimize the loss of good material.
Metal detectors for mechanical conveyors take the shape of a tunnel surrounding the conveyor. This system may be combined with a variety of customized rejection options for loose or packaged materials. Metal detectors for films and thin sheets use coils that are extremely sensitive at close range. They can fit directly underneath the web and require very little space.
Separators for plug-flow applications are similar in operating principle to a free-fall detector. However, the plug-flow design detects metals in slow-moving or standing columns. A normal application is mounting the system underneath the hopper and merely higher than the throat in the processing machine. At Bunting Magnetics, we call this the “Last Chance Separator” or LCS. The LCS is constructed to back up batch feeders, blenders, along with other processing equipment weighing as much as 250 lb. Devices are bolted straight to the infeed in the LCS.
Put in a magnet – Place a drawer, grate, hump, liquid-trap, or other magnetic separation unit upstream to work alongside your detector. Magnetic separators will pull all ferrous metal out before it reaches the detector. This can lighten the burden of contaminants that go through the detector, increasing its efficiency while minimizing the likelihood of rejecting good material. Additionally, use of an upstream magnet lets you adjust the detector’s sensitivity to your higher-level to trap only non-ferrous contaminants.
The detection system consists of a pulse/echo transducer, a water jet nozzle and an x-y table. Foreign bodies such as glass, Metal Detector Door were detected by scanning the flat bottom from the beverage container. Based upon acoustic modeling, a method for detection and identification of foreign bodies is developed and tested. A signal processing algorithm for time-frequency analysis can be used to discriminate between beverage and contaminants from ultrasound echoes. Effective detection ability for materials including glass, metals, and plastic, with sizes from 10 to 2.5 mm2 is demonstrated. Experiments were also performed using ultrasonic beam penetrating glass material to detect steel balls of numerous sizes. This is nearer to the situation of real foreign body with regards to orthogonality and cross-section to ultrasound beam.
Detection of metallic and non-metallic objects – Sometimes you simply need to know what is hidden behind a surface. For instance behind a wall or cover, or what exactly is inside in a storage container or shipping container. Capacitive proximity sensors are best for level and feed monitoring. From solid material, including paper or wood, to granules or liquids, they reliably detect the status of the product during the production process and final inspection. Is there something behind which cover? Will be the filled package really full?
Exactly how much paint remains left within the tank? For capacitive proximity sensors, they are easy questions to answer. Capacitive proximity sensors from SICK are never far away from the action. Sensing ranges between 1 and 25 mm let them be utilized in virtually all installation situations, which makes them extremely adaptable for a wide range of applications. These sensors pbgavn also remarkably resistant against faults. Impurities, contamination, dust, and airborne spray particles have little influence on them, nor does electromagnetic interference. No wonder they may be installed in a great deal of industries, like food, automotive, or even in storage and conveyor systems.
Reliable, powerful, rugged. Inductive proximity sensors from SICK – Millions of inductive proximity sensors are presently being used in virtually all industries. They Walk Through Metal Detector Gate without contact, and they are characterized by an extended service life and extreme ruggedness. Using the latest ASIC technology, SICK’s sensors provide the ultimate in precision and reliability. SICK provides the right means to fix meet your needs every time – from cylindrical or rectangular standard sensors with single, double or triple operating distance, to special sensors for explosive zones and harsh environments. Our sensors would be the intelligent, reliable way to implementing industry-specific and customized answers to any task involving automation.
Junhong Electronic&Technology (Dongguan) Co., Ltd is a professional manufacturer since 2005, specialized in R&D of security detection technology. We have various of products range: Walk through metal detectors, hand held metal detectors, X-ray luggage scanners, X-Ray Body Scanner, Underground Metal Detector, Industrial Metal Detector, Checkweigher, Infrared Body Temperature Detection System; Explosives Detector, Under Vehicle Surveillance Systems; etc.
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