Probably the most versatile type is the Metal Detector For Broken Needle, 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 are available 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 from the reject system.
Metal detectors for pneumatically conveyed materials take the form 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 can be obtained 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 around the conveyor. This method can be combined with a number of customized rejection alternatives for loose or packaged materials. Metal detectors for films and thin sheets use coils which can be extremely sensitive at close range. They can fit directly beneath 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 normal application is mounting the unit underneath the hopper and merely higher than the throat from the processing machine. At Bunting Magnetics, we call this the “Last Chance Separator” or LCS. The LCS is made to support batch feeders, blenders, along with other processing equipment weighing approximately 250 lb. Tools are bolted directly 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 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 probability of rejecting good material. Additionally, usage of an upstream magnet allows you to adjust the detector’s sensitivity to a higher-level to trap only non-ferrous contaminants.
The detection system is made up of a pulse/echo transducer, a water jet nozzle as well as an x-y table. Foreign bodies including glass, Security Wand Metal Detector were detected by scanning the flat bottom from the beverage container. Based on acoustic modeling, a way 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 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 various sizes. This is even closer to the situation of real foreign body in terms of 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 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, including paper or wood, to granules or liquids, they reliably detect the status of the product through the production process and final inspection. Can there be something behind which cover? Is definitely the filled package really full?
How much paint is still left within the tank? For capacitive proximity sensors, these are easy inquiries to answer. Capacitive proximity sensors from SICK are never far away from the action. Sensing ranges between 1 and 25 mm allow them to be used in nearly all installation situations, which makes them extremely adaptable for an array of applications. These sensors pbgavn also remarkably resistant to faults. Impurities, contamination, dust, and airborne spray particles have little effect on them, nor does electromagnetic interference. No surprise these are installed in a wide variety of industries, including food, automotive, or perhaps in storage and conveyor systems.
Reliable, powerful, rugged. Inductive proximity sensors from SICK – Millions of inductive proximity sensors are currently in use in nearly all industries. They X Ray Scanner Machine For Food without contact, and therefore are described as a long service life and extreme ruggedness. With the latest ASIC technology, SICK’s sensors provide the ultimate in precision and reliability. SICK provides the right answer to meet your preferences each 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 the intelligent, reliable route 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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