By far the most multipurpose type is the Conveyor Belt 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 coupled with short rejection time ensures minimal loss of good product.
Free-fall units can be found in single-coil or balanced-coil designs and 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 from the reject system.
Metal detectors for pneumatically conveyed materials take the shape of a collar around 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 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 system can be coupled with many different customized rejection choices for loose or packaged materials. Metal detectors for films and thin sheets use coils which are 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 your free-fall detector. However, the plug-flow design detects metals in slow-moving or standing columns. A normal application is mounting the unit under the hopper and merely over the throat of the processing machine. At Bunting Magnetics, we call this the “Last Chance Separator” or LCS. The LCS is made to support batch feeders, blenders, as well as other processing equipment weighing up to 250 lb. Tools are bolted straight to the infeed in the LCS.
Add 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 load of contaminants that pass through the detector, increasing its efficiency while minimizing the probability of rejecting good material. Additionally, usage of an upstream magnet enables you to adjust the detector’s sensitivity to some higher level to trap only non-ferrous contaminants.
The detection system consists of a pulse/echo transducer, a water jet nozzle plus an x-y table. Foreign bodies like glass, Welding Apparel Needle Detector were detected by scanning the flat bottom of 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 utilized 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 different sizes. This can be 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 know what is hidden behind a surface. As an example behind a wall or cover, or what is inside in a storage container or shipping container. Capacitive proximity sensors are perfect for level and feed monitoring. From solid material, such as paper or wood, to granules or liquids, they reliably detect the status from the product through the production process and final inspection. Can there be something behind which cover? Will be the filled package really full?
How much paint continues to be left in the tank? For capacitive proximity sensors, they are 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 used in almost all installation situations, making 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 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 – Millions of inductive proximity sensors are being used in virtually all industries. They Conveyor Metal Detector without contact, and they are seen as a an extended service life and extreme ruggedness. With all the latest ASIC technology, SICK’s sensors provide the epitome of precision and reliability. SICK can offer the best answer to meet your needs each and 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 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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