By far the most versatile type is the Alarm Full Body Detector, 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 along with short rejection time ensures minimal loss of good product.
Free-fall units can be purchased in single-coil or balanced-coil designs along 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 have a quick-clean rejection system that facilitates cleaning of the reject system.
Metal detectors for pneumatically conveyed materials take the shape of a collar surrounding 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 in order to minimize the losing of good material.
Metal detectors for mechanical conveyors take the shape of a tunnel all around the conveyor. This method could be combined with a variety of customized rejection choices for loose or packaged materials. Metal detectors for films and thin sheets use coils which can be extremely sensitive at close range. They fit directly beneath the web and require very little space.
Separators for plug-flow applications are similar in operating principle to some free-fall detector. However, the plug-flow design detects metals in slow-moving or standing columns. A typical application is mounting the system beneath the hopper and just above the throat in the processing machine. At Bunting Magnetics, we call this the “Last Chance Separator” or LCS. The LCS is built to support batch feeders, blenders, and other processing equipment weighing up to 250 lb. Equipment is bolted right to the infeed from the LCS.
Add a magnet – Place a drawer, grate, hump, liquid-trap, or some other magnetic separation unit upstream to work with your detector. Magnetic separators will pull all ferrous metal out before it reaches the detector. This can lighten the stress of contaminants that pass through the detector, increasing its efficiency while minimizing the chances of rejecting good material. Furthermore, usage of an upstream magnet enables you to adjust the detector’s sensitivity to your more impressive range to catch only non-ferrous contaminants.
The detection system is composed of a pulse/echo transducer, a water jet nozzle plus an x-y table. Foreign bodies such as glass, Detector Gold were detected by scanning the flat bottom in the beverage container. Based upon acoustic modeling, a way for detection and identification of foreign bodies is developed and tested. A signal processing algorithm for time-frequency analysis is used to discriminate between beverage and contaminants from ultrasound echoes. Effective detection ability for materials such as 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 different sizes. This really is closer to the situation of real foreign body when it comes to orthogonality and cross-section to ultrasound beam.
Detection of metallic and non-metallic objects – Sometimes you need to simply understand what is hidden behind a surface. For instance behind a wall or cover, or precisely what is inside in a storage container or shipping container. Capacitive proximity sensors are best for level and feed monitoring. From solid material, like paper or wood, to granules or liquids, they reliably detect the status in the product during the production process and final inspection. Is there something behind which cover? Is definitely the filled package really full?
How much paint is still left inside the tank? For capacitive proximity sensors, these are generally easy questions to answer. Capacitive proximity sensors from SICK are never far from the action. Sensing ranges between 1 and 25 mm let them be applied in nearly all installation situations, causing them to be extremely adaptable for a variety of applications. These sensors pbgavn also remarkably immune to faults. Impurities, contamination, dust, and airborne spray particles have little effect on them, nor does electromagnetic interference. Not surprising these are installed in a wide variety of industries, like food, automotive, or in storage and conveyor systems.
Reliable, powerful, rugged. Inductive proximity sensors from SICK – An incredible number of inductive proximity sensors are being used in virtually all industries. They Metal Detector Gold Range Silver without contact, and therefore are characterized by a long service life and extreme ruggedness. With all the latest ASIC technology, SICK’s sensors provide you with the ultimate in precision and reliability. SICK can provide the correct means to fix meet your requirements 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 are definitely the intelligent, reliable way to implementing industry-specific and customized solutions 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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