X ray Detector
1.What products can be detected by Rehoo MDC-V series X-ray Inspection System ?
The X-ray Inspection System is used to inspect low format products in packaging, and can check products up to 300mm in height and 500mm in width. The MDC-V series provides excellent performance or high product
performance due to the nature of products that can traditionally detect metals but cannot detect metal packaging.
2. Is X-ray Inspection System detecting safe？
Using X-ray detection is very safe. The X-ray emission in the environment is below 1 microsieverts per hour, far
below the standards of the European and American Food and Drug Administration. Both software and hardware are equipped with extensive protective measures to continuously check the status of the machine and prevent
accidental emissions caused by operator errors or system failures.
3. How does the X-ray detection system work？
The X-ray detection system operates by generating a high-frequency electromagnetic radiation (X-ray) beam in the generator. Then, these beams are guided to the desired target, which will absorb some light while allowing other
light to pass through. On the opposite side of the target and generator, there is a detector that can read
electromagnetic waves passing through the target. The higher the density/size of the product, the less radiation
passes through. The result is an image generated by the detector, which details the high-density and low-density
regions of the entire target. This is the same principle as making shadow puppets on the wall. Some light is
obstructed by the puppet, creating shadows that provide details of the puppet's shape. For X-rays, this detail is also internal.
4. What is the difference between metal detectors and X-ray Inspection Systems？
The main difference between metal detectors and X-ray detection systems lies in how each machine detects foreign objects. Metal detection relies on conductivity to locate stainless steel, ferrous metals, and non-ferrous metals in
products, while X-rays use the density difference between products and foreign objects for detection. X-ray
technology allows for the detection of a wider range of foreign objects, including metals, glass, stones, bones,
rubber, washers (metal detectable and non-metal detectable), plastics, and various other medium and high-density items. According to general experience, X-ray detection systems can detect pollutants in much smaller sizes than metal detectors.
Some products are limited by their composition and packaging and can use detection systems. Products with metal packaging, such as those with metal foil, cannot be accurately detected by metal detectors and require the use of X- ray systems. The best way to determine which option is most suitable for your application is to receive consultation or free, non mandatory verification testing. We can use certified test cards or foreign object samples provided by
you to test your exact product on various different systems, providing you with formal reports on the capabilities and expected performance of each technology.
5. Do operators need to wear any specific personal protective equipment when operating X-ray detection systems？
When operating the Rehoo X-ray series X-ray detection system, there is no need to wear personal protective equipment. The use of lead lining and protective curtains in X-rays can reduce radiation from the generator,
allowing only a small portion of the radiation used in the detection to leave the system. The China Food and Drug
Administration has regulated these systems and set a standard of 5 μ Sv/hour as the safe radiation level.The X-ray system of Rehoo X-ray series emits a dose of less than 1 μ Sv per hour, far below the allowable limit of the China Food and Drug Administration. Every day, we are exposed to background radiation naturally generated by the sun and various environmental factors. Every year, on average, everyone is exposed to background radiation of 2400 μ Sv, which is higher than the dose of standing next to an active X-ray inspection system for three consecutive
months.
6. Is X-ray testing for food safety? Has the product undergone any changes during the testing process?
The food tested by X-ray remains unchanged. Because the radiation used in the X-ray detection system is relatively low compared to the natural background radiation found in various environments, the properties of the product
remain unchanged during X-ray detection. The product itself cannot be radioactive.The process by which stable
compounds become radioactive is called activation and can only be caused by neutron radiation, which is a specific type of radiation not used for X-ray detection. The type of radiation used in X-ray detection systems is actually light, with a wavelength longer than the visible light we can see. Because of this, exposure to X-rays within the detection system is similar to taking a photo with a flash on: the product will be quickly illuminated, but once the exposure is
complete, it will remain completely unchanged.
7.What materials can X-ray Inspection systems detect？
Rehoo X-ray system is capable of detecting a range of materials in cleaning products, including stainless steel,
ferrous metals, non-ferrous metals, glass, ceramics, stones, bones, rubber, gaskets (metal detectable and non-
metal), plastics, and some organic materials. The exact size and range of materials that can be detected by X-rays vary depending on the product type and specific process, and our formal non obligated verification testing is the
best way to determine what your product may be. Rehoo Rehoo can consistently detect materials and dimensions that other suppliers cannot detect. For more information about what can be detected during your process, please contact us for free consultation or verification testing.
8. What is the price of the X-ray detection system？
Although all X-ray equipment uses the same advanced technology to detect products, the actual components and equipment size used have a significant impact on the price of X-ray systems. Stronger generators, higher
configuration detectors, and more advanced software will all increase the cost of X-ray systems. For low format
products that do not require the same power as other high-density packages, Rehoo proudly offers our MDC-V
series X-ray machines at a reasonable price.Although these systems are cost-effective, like our other X-ray
systems, they still have extraordinary sensitivity to all types of foreign objects. Like all industrial equipment, if
specific structures are required to improve the IP rating of the flushing environment or modify the integration of the system, the price may slightly increase. The easiest way to determine the exact cost of the correct X-ray system in your specific application is to contact us.
Check Weigher
1. How does a checkweigher work?
It consists of a controller and a weigh frame with infeed, weighing and outfeed sections. Products move on the conveyor at the same speed. The weigh cell weighs them, and those failing weight specs are rejected by air blast, pusher and other devices.
2. What packages can a checkweigher weigh?
It fits both food and non-food packages, such as canned goods, plastic bags of rice, dairy products, pharmaceutical items and cement bags. But loose, continuously flowing products are not applicable.
3. How fast can a checkweigher work?
It varies by model. For example, some chain checkweighers for pet food can handle up to 400 packages per minute, while heavy-duty models for industrial use may only reach 100 packages per minute.
4. Can checkweighers detect physical contaminants?
No. But they can be combined with metal detectors or X-ray inspection systems to detect metal, glass, stones and other foreign objects.
5. What to do if the touch screen does not light up after power-on?
Check if the power supply and main switch are normal, whether the leakage switch trips, and if the switching power supply or DC24V line is damaged.
6. Why do products keep showing overweight or underweight?
After confirming the product weight itself is unchanged, check for zero drift, calibrate with weights, clean foreign objects on the scale, and ensure the scale does not collide with other parts.
7. What factors affect the weighing accuracy?
Key factors include product speed, size and weight, the transfer stability of products on the machine, conveyor alignment, and the rejector design.
8. Why does not the rejection mechanism work when defective products are detected?
Verify if the rejection time is set correctly, check the air pressure of the air source, and inspect for faults in solenoid valves or cylinders that control the rejection mechanism.
Metal Detector
1. What is the working principle of a conveyor metal detector?
It operates based on the electromagnetic induction principle. It creates a stable magnetic field in the detection zone. When ferrous or non-ferrous metals pass through, the magnetic field distorts. The detector identifies this change via sensors, then triggers an alarm or rejection mechanism.
2. In which industries are conveyor metal detectors mainly applied?
They are widely used in food processing for detecting metal impurities in candies and dairy products; and also in pharmaceuticals, toys, textiles to screen metal contaminants in raw materials or finished products.
3. Why does false alarm often occur during operation?
Common causes include dirty conveyor belts with iron-containing debris, external electromagnetic interference from welding machines or high-voltage lines, operators carrying metal items like keys near the device, and high moisture/salt in products interfering with magnetic signals.
4. How to adjust the sensitivity of the equipment?
Most models have customizable sensitivity levels, with independent adjustments for ferrous and non-ferrous metals. For products with high moisture, use phase adjustment tech to suppress interference. Save parameters for different products for direct use later.
5. What are the common rejection methods after metal is detected?
Common methods include sound and light alarms, conveyor belt shutdown, pusher, air-blowing rejection, flap rejection, and belt-down rejection. The latter is suitable for loose and thin products and can be seamlessly integrated into production lines.
6. How to conduct daily maintenance on the conveyor metal detector?
Wipe both sides of the conveyor belt weekly to remove iron filings. Install the device on a stable surface with shock- absorbing pads to avoid vibration. Re-calibrate when ambient temperature and humidity change greatly, and replace worn conveyor belts in time.
7. What material and protection level are common for the equipment?
The main body is usually made of 304 stainless steel, and 316 stainless steel is optional. The conveyor belt uses food-grade materials meeting FDA standards.
8. Can it be integrated with the existing production line?
Yes. It supports multiple power supplies such as 110V/220V/380V, and the conveyor speed can be adjusted. The tunnel size and belt height can be customized to match different production line specifications, and it can also connect with the control system of the production line.
Belt Combination Weigher
1. What is the working principle of a Belt Combination Weigher?
It has multiple independent conveyor weighing units. The weighing sensors detect material weight on each belt, and the control system uses optimization algorithms to select the combination closest to the target weight, realizing high- precision quantitative weighing.
2. Which industries and materials is it suitable for?
It is widely used in food, aquatic products and other industries. It is suitable for poultry meat, seafood, long vegetables, easy-damaged grapes and also handles sticky and fragile materials well.
3. What is its general weighing accuracy range?
The processing accuracy is usually ±0.25% - ±1%, and the process monitoring accuracy ranges from ±0.5% to ± 2%, which can minimize overweight waste and underweight unqualified products.
4. Why does the weighing accuracy deviate significantly during use?
Common reasons include sensor failure, belt deviation/tension imbalance, material adhesion on the belt, and environmental interference. For example, zero drift of sensors caused by temperature changes will also lead to inaccurate data.
5. What are its prominent functional advantages compared with ordinary weighing equipment?
It can pre-store up to 100 material weighing programs, and automatically stop when the production quantity meets the preset value. Its belt is infinitely variable, and it can be connected with automatic feeding and packaging machines to reduce material damage.
6. Can it work normally in wet or dusty harsh environments?
Yes. Most models adopt SUS304 stainless steel body and IP65 dustproof and waterproof design, which can adapt to both dry and wet working environments.
7. How to maintain it daily to extend its service life?
Clean the belt and sensors regularly to avoid material residue; lubricate mechanical parts periodically; disassemble and wash the belt without tools regularly, and calibrate the sensor parameters monthly.
8. How about your after-sales policy?
Customer first is our always principle. All of our products normal warranty is 12 months. We give
necessary back or video guidance for daily problems. If massive products occur big quality problems.
Our technical and engineer support overseas service.
9.Do you accept customer Logo and customized?
Yes, we accept kinds of customized and logo of all of our products for customers.
