Metal Detectors with Twin Sensors
The Unrivaled Precision of Metal Detectors with Twin Sensors
In industrial processing, the integrity of machinery and the quality of the end product are paramount. Unwanted metallic contaminants pose a significant threat, capable of causing costly damage to conveyor systems and processing equipment, leading to downtime, repairs, and potential product recalls. Double Sensor Metal Detectors offer an advanced solution, specifically engineered to provide superior detection capabilities in demanding environments.
These sophisticated systems are designed and manufactured to precisely identify metals that may be embedded within the material moving along a conveyor belt, thereby preventing severe damage to subsequent machinery. Their unique configuration involves attaching sensors to both the bottom and top of the conveyor belt, creating a comprehensive detection field. This dual-sensor approach significantly enhances their ability to locate even small or deeply embedded metallic objects.
Upon detection, these systems are equipped to deliver clear audible and light warnings, immediately alerting operators to potential issues. Furthermore, they possess the capability to generate a signal that can trigger another automated movement or process, such as halting the belt or activating a product rejection system, ensuring seamless integration into automated production lines. They are inherently more sensitive than single-sensor metal detectors, making them the ideal choice for applications where the height of the material on the belt exceeds 15 cm, or where a higher level of detection certainty is required. It’s important to note that while a wider sensor range allows for larger material depths, it generally correlates with a slightly lower detection sensitivity, whereas a narrower range provides superior sensitivity for thinner material layers.
Comprehensive Technical Features for Robust Performance
Our twin-sensor metal detectors are built with a suite of advanced technical features designed for reliability, precision, and ease of use in diverse industrial settings:
- Connectivity & Display: Equipped with 2 x 1 mm LIYCY cables for robust signal transmission and an intuitive LCD digital display, the system ensures clear feedback and user-friendly interaction.
- Adjustable Sensitivity: Detection sensitivity can be finely tuned by entering numerical values, allowing operators to optimize performance for various material types and metal sizes.
- Timing Controls: Configurable waiting and delay times provide flexibility in system response, preventing premature or delayed actions.
- Reset Options: Both automatic and manual reset settings are available, offering operational convenience and control.
- Relay Outputs: The system includes 2 dedicated metal relays for triggering actions upon metal detection and 1 fault relay for system diagnostics, ensuring comprehensive control and safety. Each warning relay and fault relay is a 6 Amp Changeover type, providing robust switching capabilities for industrial control circuits.
- Noise & Interference Settings: An advanced noise setting feature allows the system to differentiate between actual metal detections and environmental electrical interference, minimizing false alarms.
- Product Management: Features for product reset and counting are integrated, enabling better process control and data logging.
- Rivet Sensor Connection: The ability to connect a rivet sensor, either before or after the main detection zone, is a standard feature, allowing the system to operate effectively on conveyor belts that utilize metal fasteners without triggering false positives.
Beyond these, the system boasts impressive specifications:
- Panel Protection: The control panel boasts an IP 65 rating, indicating high protection against dust ingress and low-pressure water jets, making it suitable for harsh industrial environments.
- Detection Threshold: Capable of detecting metal dimensions ≥ 30 mm, ensuring effective removal of significant contaminants.
- Operating Conditions: Designed to perform reliably in a wide ambient operating temperature range of -20 ºC to +40 ºC.
- Power Requirements: Operates efficiently on a standard voltage of 220V ±10% at 50Hz, fitting common industrial power supplies.
- Belt Speed Compatibility: Recommended for feed belt speeds between 1.07 and 1.49 m/s, optimizing detection accuracy and throughput.
Distinct Advantages of Twin Sensor Technology
Investing in metal detectors with twin sensors brings a multitude of operational and economic advantages:
- Superior Sensitivity: They offer significantly enhanced sensitivity compared to single-sensor metal detectors, allowing for the detection of smaller or more deeply embedded metallic foreign objects. This dual-field technology penetrates material more effectively, providing a more thorough scan.
- Adjustable Detection Sensitivity: The ability to precisely adjust detection sensitivity means the system can be tailored to specific product types and operational requirements, minimizing false alarms while maximizing genuine metal detection.
- Intuitive Digital Control: The metal detector control panel features a clear digital display, allowing all adjustment operations to be made easily and accurately by entering numerical values. This simplifies setup and fine-tuning.
- Advanced Interference Mitigation: A dedicated interference setting menu actively counters common industrial negativities such as electrical interference, false alarms due to vibration or ground effects, and radio signals, ensuring reliable and consistent operation.
- Effortless Integration: The system is designed for easy installation, requiring no structural modifications to existing carrier systems, which minimizes downtime and installation costs.
- Integrated Warning System: The metal detector’s warning and alarm system provides both audible and illuminated alerts, eliminating the need for separate external connections and simplifying setup.
- Compatibility with Riveted Belts: One of its key strengths is its ability to be used effectively on conveyor belts that are fastened with metal rivets. The rivet sensor connection feature is standard and can be retrofitted, allowing for seamless operation without false detections from the belt’s own components.
- Automated Rejection & Tracking: The system supports connection to product rejection systems and includes features for faulty product counting and resetting, facilitating automated quality control and detailed production analysis.
Conclusion
Metal detectors with twin sensors represent a critical advancement in industrial protection and quality control. Their enhanced sensitivity, robust technical features, and user-friendly interface make them an indispensable tool for operations seeking to safeguard machinery, ensure product purity, and optimize overall efficiency. By providing comprehensive detection and flexible integration options, these systems deliver peace of mind and contribute significantly to operational excellence.
Please contact us for more information on how our twin-sensor metal detectors can enhance your specific industrial applications.
Users also asked these questions
Industrial Twin-Sensor (Multi-Frequency or Dual-DSP) Metal Detectors represent the pinnacle of electronic inspection technology. Unlike single-sensor models stuck on one frequency, these advanced units simultaneously project two (or multiple) electromagnetic frequencies. This allows them to aggressively cancel out severe "Product Effects" while maintaining extreme sensitivity to both ferrous and non-ferrous metals.
They are mandatory for processing "difficult" or "wet" products with high conductivity. This includes fresh meat and poultry processing, dairy/cheese manufacturing, hot baked goods, ready-meals, and products packaged in metallized film (where the packaging itself triggers false alarms on standard detectors).
A wet piece of meat produces a massive conductive signal (Product Effect) at high frequencies, causing false rejects. The Twin-Sensor system uses a low frequency to penetrate the wet meat and easily detect stainless steel, while simultaneously using a high frequency to detect tiny aluminum or copper fragments, using advanced algorithms to separate the metal signal from the meat signal.
Yes, but with specific configurations. Standard detectors are blinded by aluminum foil. Twin-Sensor or specialized multi-frequency detectors can be tuned to entirely ignore the aluminum packaging while still actively searching for ferromagnetic metals (Iron, Steel) hidden inside the food.
Absolutely. These are top-tier B2B automated systems. They feature large HMI touchscreens with advanced DSP (Digital Signal Processing) and Ethernet/USB connectivity. They automatically log every detection event, operator login, and parameter change, generating FDA/BRC-compliant audit reports directly to your central factory SCADA system.
Yes. Engineered for brutal meat and dairy processing environments, the entire conveyor frame, detector head, and control cabinet are constructed from heavy-gauge AISI 316L stainless steel. They are IP69K certified, meaning they withstand daily, high-pressure (100 bar), high-temperature chemical foam washdowns without water ingress.
Yes, we provide full B2B turnkey integration. We supply the Twin-Sensor detector head mounted on a custom sanitary conveyor, complete with automated reject bins (lockable for QA access only), fail-safe sensors (to confirm the contaminated product actually entered the bin), and visual/audible factory alarms.
