Industrial Metal Detection Machines by GRAND
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GRAND Company is a leading testing equipment manufacturer of advanced industrial metal detectors and detection systems.
Metal detectors play a crucial role in manufacturing by safeguarding product integrity and consumer health.
Our machines are high-performance sensing devices that use search coils and
ejection systems to automatically find and remove metal contaminants.
Product overview-Metal Detector Series
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The Importance of Reliable Metal Detection
In manufacturing, consistency is key. A single metal shard can cause massive recalls. It can damage expensive downstream machinery. Worse, it can harm your consumers. You need a Metal detection system you can trust. Our equipment is designed to protect your business.
We focus on high sensitivity and stability. Our machines detect minute particles. They find iron, stainless steel, and non-ferrous metals. We use advanced digital signal processing. This ensures that only true contaminants trigger a rejection. You get fewer false alarms and higher productivity.
Understanding Our Machine Classifications
Not all production lines are the same. Different products have different physical properties. Therefore, one machine cannot fit all needs. We have categorized our equipment into three distinct types. This helps you choose the right tool for the job.
Our main categories are:
Standard Digital Metal Detectors (All-Metal)
Aluminum Foil Metal Detectors
Multi-Frequency Metal Detectors
Standard Digital Metal Detectors (All-Metal Series)
High Precision & Speed: Detects minute metal pieces (Fe ≥1.2 mm, SUS ≥2.5 mm) at high conveyor speeds (up to 30 m/min). Auto-learn and fine-tuning deliver stable sensitivity even with wet, salty or fatty products.
Anti-Interference Design: Advanced DSP and auto-calibration automatically compensate for product effects (sugars, oils, moisture), sharply reducing false rejects. EMC shielding and industrial-grade components guard against external noise.
- Smart Features: Stores multiple product profiles with self-learning algorithms, enabling rapid setup and consistency. (We also offer dedicated Pharmaceutical Metal Detectors that integrate after tablet presses or capsule fillers for inspecting pills and capsules.)
- Hygienic Construction: All contact parts are stainless steel (304) and FDA-compliant. Smooth frame and modular design allow fast washdown and maintenance. IP65 protection ensures reliability in harsh environments.
Aluminum Foil Metal Detectors (Ferrous-Only Series)
The Challenge of Aluminum Packaging
Many modern products use aluminum packaging. You see this in coffee bags, chocolates, Aluminum-plastic blister pack medicine and masked pharmaceutical products. Standard metal detectors cannot work here. They will detect the aluminum packaging itself. The machine would reject every single good product.
We have a solution. We offer the specialized Aluminum foil gold inspection machine. This is technically known as a Ferrous-in-Foil detector. As you requested, we highlight this specific capability. This machine is smart. It ignores the aluminum foil package. It focuses solely on magnetic metals.
How the CZ-MLB3020 Works
The CZ-MLB3020 is designed for this specific challenge. Since aluminum is a metal, standard machines see it as a contaminant. Our aluminum foil machine blocks out non-ferrous signals. It only detects Iron (Fe) elements inside the bag.
Because the packaging is conductive, we must sacrifice non-ferrous detection. However, we maintain high sensitivity for iron. The empty machine detection accuracy for Iron is is ≥1.5mm. This ensures safety even when using metallic packaging materials.
Specific Applications
This machine is essential for specific industries. It is perfect for products packed in aluminum foil. It is also used for products with aluminized film. If your product is a pouch of coffee or a foil-wrapped candy, you need this machine.
The construction matches our high standards. It features a 304 stainless steel frame. It uses a food-grade PU belt. The effective detection width is 300mm and height is 200mm. It is robust, reliable, and specialized.
Multi-Frequency Metal Detectors (High-Performance Series)
Overcoming Difficult Product Effects
Some products are very difficult to inspect. Items that are wet, hot, frozen, or high in salt create strong signals. We call this the "product effect". A standard single-frequency machine might struggle here. It might give false alarms.
For these difficult scenarios, we offer the C3010 Multi-Frequency Metal detection system. This is our most advanced unit. It uses multiple frequencies to penetrate the product. It effectively eliminates interference from oil, salt, and moisture.
Our factory in Guangzhou also manufactures checkweighers. We welcome you to visit us and experience our testing equipment firsthand.
Advanced "Smart" Capabilities
The C3010 is a smart machine. It features intelligent identification technology. It has self-learning and memory functions. You can set it to different modes. Modes include Dry, Wet, Salt-Wet, and Frozen
One-click disassembly/installation of conveyors that require frequent cleaning ensures the hygiene of the system.
Superior Hardware and Interface
We use a high-definition touch screen for operation. The interface is conversational and friendly. You can set parameters quickly. Once set, you rarely need to readjust.
The hardware is top-of-the-line. The probe uses a unique shell design filled with epoxy. This withstands thermal shock. The protection level can reach IP66. It is waterproof and dustproof. This makes it easy to wash down in harsh environments.
Customization and Flexibility
1. Tailored to Your Needs
We are not just Sensing devices sellers. We are manufacturers. This means we can customize machines for you. Do you have a wide conveyor? We can adjust the window size. Do you have tall products? We can change the detection height.
The standard height is 750mm +- 50mm. However, we can customize this according to customer requirements. We can also customize the main passive shaft diameter. We adapt to your existing line, not the other way around.
2. Diverse Reject Mechanisms
Finding the metal is step one. Removing it is step two. We offer various rejection systems. The standard is an alarm stop. But we offer automated solutions too.
We can install air blowers for light products. We can use push rods (pushers) for boxes. We also offer flap rejectors (turnover) for bulk items. You can choose what works best for your packaging type. This automation saves labor and reduces waste
Applications Across Industries
Pharmaceuticals
Safety is critical in medicine. A Pharmaceutical metal detector must be precise. It must detect tiny particles. Our machines inspect pills, tablets, and powders. They ensure no metallic contamination reaches the patient. The 304 stainless steel design meets strict hygiene rules.
Textiles and Chemicals
Metal shards can damage needles in textile machinery. They can contaminate chemical powders. Our systems prevent this equipment damage. They ensure the purity of raw materials. This improves the consistency and reliability of your final product.
Food and Beverage
This is our primary market. Our metal detectors for sale are used everywhere. They check bakery items, meats, and frozen foods. They are crucial for HACCP compliance. The machines resist the harsh cleaning required in food plants.
Why choose Grand?
GRAND’s industrial metal detectors are engineered for precision and reliability.
As a global Testing Equipment Manufacturer, we emphasize innovation (smart learning algorithms, advanced sensing coils) and quality control (ISO-certified production, strict QC) in every machine.
We offer metal detectors for sale worldwide, with full customization – from narrow tunnels for pouch lines to wide apertures for bulk products.
Every product is backed by rapid after-sales support (“quick response, immediate action” philosophy) and training.
