By far the most versatile type is the Check Weigher Weighing Machine, 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 can be purchased in single-coil or balanced-coil designs with either analog or digital electronics. Free-fall units can range in aperture size from 25 to 300 mm (1 to 12 in.). Some types possess a quick-clean rejection system that facilitates cleaning from 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 closing and opening to be able to minimize the loss of good material.
Metal detectors for mechanical conveyors take the form of a tunnel around the conveyor. This technique may be coupled with many different customized rejection alternatives for loose or packaged materials. Metal detectors for films and thin sheets use coils which are extremely sensitive at close range. They fit directly underneath the web and require hardly any 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. An average application is mounting the system under the hopper and just above 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, as well as other processing equipment weighing as much as 250 lb. Tools 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 do business with your detector. Magnetic separators will pull all ferrous metal out before it reaches the detector. This can lighten the stress of contaminants that move through the detector, increasing its efficiency while minimizing the chances of rejecting good material. In addition, usage 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 made up of a pulse/echo transducer, a water jet nozzle and an x-y table. Foreign bodies like glass, Handheld Security Check 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 transmission processing algorithm for time-frequency analysis can be 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 different sizes. This can be nearer to the case of real foreign body in terms of orthogonality and cross-section to ultrasound beam.
Detection of metallic and non-metallic objects – Sometimes you just need to know what is hidden behind a surface. For example behind a wall or cover, or precisely what is inside in a storage container or shipping container. Capacitive proximity sensors are ideal for level and feed monitoring. From solid material, like paper or wood, to granules or liquids, they reliably detect the status from the product through the production process and final inspection. Is there something behind that cover? Will be the filled package really full?
Just 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 applied in almost 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 impact on them, nor does electromagnetic interference. No surprise 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 in use in nearly all industries. They Liquid Detector without contact, and they are characterized by a long service life and extreme ruggedness. With the latest ASIC technology, SICK’s sensors provide the epitome of precision and reliability. SICK can offer the right means to fix meet your preferences 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 the intelligent, reliable route to implementing industry-specific and customized methods 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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Address: No.23, Xintian street, Baizhoubian, Dongcheng district, Dongguan city, China