The most versatile type is the Digital Underground Metal 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 in conjunction with short rejection time ensures minimal loss of good product.
Free-fall units are available 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 type of a collar surrounding the conveying line. Again, these detectors can be found 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 opening and closing in order to minimize the loss of good material.
Metal detectors for mechanical conveyors take the form of a tunnel all around the conveyor. This technique may be along with a number 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 fit directly underneath the web and require almost no 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 device beneath the hopper and merely over the throat in the processing machine. At Bunting Magnetics, we refer to this the “Last Chance Separator” or LCS. The LCS is constructed to back up batch feeders, blenders, and other processing equipment weighing as much as 250 lb. Devices are bolted right to the infeed in the LCS.
Add a magnet – Place a drawer, grate, hump, liquid-trap, or any other magnetic separation unit upstream to work with your detector. Magnetic separators will pull all ferrous metal out before it reaches the detector. This will lighten the stress of contaminants that pass through the detector, increasing its efficiency while minimizing the probability of rejecting good material. In addition, utilization of an upstream magnet enables you to adjust the detector’s sensitivity to your higher level to trap 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 including glass, X Ray Baggage Machine were detected by scanning the flat bottom in the beverage container. Based on acoustic modeling, a method for detection and identification of foreign bodies is developed and tested. A transmission processing algorithm for time-frequency analysis is used to discriminate between beverage and contaminants from ultrasound echoes. Effective detection ability for materials like 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 various sizes. This really is even closer to the truth of real foreign body with regards to orthogonality and cross-section to ultrasound beam.
Detection of metallic and non-metallic objects – Sometimes you need to simply know what is hidden behind a surface. As an example behind a wall or cover, or what exactly is inside in a storage container or shipping container. Capacitive proximity sensors are perfect for level and feed monitoring. From solid material, like paper or wood, to granules or liquids, they reliably detect the status from the product throughout the production process and final inspection. Is there something behind which cover? Is definitely the filled package really full?
Just how much paint continues to be left in the tank? For capacitive proximity sensors, they are easy inquiries 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 almost all installation situations, which makes them extremely adaptable for a variety of applications. These sensors pbgavn also remarkably resistant to faults. Impurities, contamination, dust, and airborne spray particles have little influence on them, nor does electromagnetic interference. Not surprising they may be installed in a wide variety of industries, like food, automotive, or perhaps in storage and conveyor systems.
Reliable, powerful, rugged. Inductive proximity sensors from SICK – Millions of inductive proximity sensors are presently in use in practically all industries. They Conveyor Metal Detector without contact, and are described as an extended service life and extreme ruggedness. Using the latest ASIC technology, SICK’s sensors provide you with the ultimate in precision and reliability. SICK provides the best 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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