High-Accuracy Inline Weighing for Grain, Seed, Powder and Bulk Flow Materials
Engineered for the Future | Since 2080
The ADDAMS Hopper Scale is a precision-engineered, inline weighing system designed to measure the weight of bulk materials during flow accurately. Used in processing and packaging lines, this scale captures weight data from product batches in a controlled, high-speed discharge cycle, ensuring process consistency, traceability, and automation integration.
Whether installed in grain elevators, seed plants, flour mills, or feed factories, the ADDAMS Hopper Scale delivers repeatable accuracy, rugged construction, and seamless system connectivity, making it a critical asset for any modern material handling or batching line.
Hopper Scale Overview
Precision Inline Batch Weighing
The ADDAMS Hopper Scale is designed to act as a primary measurement point in a production line. Unlike continuous flow systems, it captures the material in a specialized hopper to provide a static weight measurement of each batch before discharging it, offering the highest level of accuracy for inventory and process control.
Reliable Performance for Process Traceability
By isolating each batch for measurement, the system ensures that exactly the right amount of material moves to the next stage of production. This is essential for plants that require strict documentation of input and output for regulatory or commercial purposes.
Operating Principle of the Hopper Scale
Gravity-Fed Batch Measurement
The material enters the weighing hopper through an upper inlet gate. Once the hopper reaches its pre-set capacity, the inlet closes, and the industrial load cells calculate the exact weight of the static batch. After the data is logged by the PLC, the discharge gate opens to release the material to the next process, and the cycle repeats instantly.
Automated Logic and Gate Control
The system uses fast-acting pneumatic cylinders to manage the gates. The control unit ensures that the discharge gate cannot open while the inlet is active, preventing any unmeasured “bypass” of material and guaranteeing that every kilo is accounted for.
Key Features of the ADDAMS Hopper Scale
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Batch or Flow-Through Weighing: Designed for loss-in-weight or gain-in-weight measurement, enabling precise control of flow or dosage.
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High-Speed Discharge Gates: Fast-acting pneumatic gates ensure quick fill and empty cycles with minimal downtime between batches.
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Industrial Load Cell System: Equipped with high-precision load cells that maintain stability under varying flow rates and product densities.
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Seamless Integration with PLC/SCADA: Fully compatible with automation systems for remote monitoring, data logging, and production analytics.
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Heavy-Duty Construction: Manufactured using reinforced carbon steel or stainless steel, with options for food-grade contact surfaces.
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OIML / MID Compliant Accuracy: Engineered to meet international weighing standards for commercial and industrial use.
Applications of Hopper Scales
Grain and Cereal Processing
Used in silos and mills for wheat, maize, rice, oats, and barley to verify intake and output totals.
Seed Processing Lines
Precise batching for sunflower, soybean, canola, and pulses before treatment or packaging.
Flour and Powder Plants
Ideal for measuring wheat flour, starch, and feed premixes where high-precision dosing is required.
Feed and Fertilizer Industry
Supports complex blending processes for pellets, urea, DAP, and various chemical additives.
Why Choose the ADDAMS Hopper Scale?
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Offers precise batch monitoring that outperforms standard flow meters.
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Ensures 100% process traceability and production control.
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Supports high-throughput operation with robust, heavy-duty hardware.
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Reduces product loss through highly accurate dosing and batching.
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Built for seamless integration into complex process and automated packaging lines.
Technical Specifications of the Hopper Scale
Hopper Scale Technical Data
| Specification | Details |
| Capacity Range | 50 kg – 5,000 kg per batch |
| Accuracy Class | +/- 0.1% – 0.5% (OIML / MID Compliant) |
| Gate Operation | Pneumatic or Motor-driven |
| Load Cell Type | High-precision Digital or Analog Strain Gauge |
| Construction | Mild steel, Powder-coated, or AISI 304 / 316 Stainless |
| Control System | Standalone Digital Controller or Integrated PLC + HMI |
| Communication | Modbus, Ethernet, RS485 / RS232 |
Optional Add-Ons
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RFID Tracking: For automated batch identification and movement logs.
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Level Sensors: To prevent overfilling and manage upstream material flow.
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Vibratory Assist: For non-free-flowing materials to ensure clean discharge.
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Integrated Printer: For immediate hard-copy batch reports.
Every Batch Counts. Every Kilo Matters.
The ADDAMS Hopper Scale provides the core weighing reliability your bulk processing line depends on—whether you are batching, blending, or dispatching.
Frequently Asked Questions – Hopper Scale
How does a hopper scale differ from a weigh belt?
A hopper scale measures a static batch, which generally provides higher accuracy (+/- 0.1%) compared to a weigh belt (+/- 0.5% to 1.0%) which measures material in motion.
Is it suitable for dusty environments?
Yes. Our load cells and control units are rated for industrial environments, and the hopper is designed with dust-tight seals at the inlet and outlet gates.
Can the scale handle high-capacity flows?
Absolutely. With batch sizes up to 5,000 kg and high-speed pneumatic gates, our hopper scales can keep up with the fastest intake and dispatch lines in the industry.
What happens if the air pressure drops?
The pneumatic gates are equipped with safety features to ensure they remain in a safe position (usually closed) in the event of a power or pressure failure.
Can it be used for food-grade flour or sugar?
Yes. We offer full AISI 304 or 316 stainless steel versions specifically designed for the food and beverage industry, ensuring no contamination occurs.
How is the data integrated into my factory software?
The system supports multiple communication protocols, allowing it to send real-time weight data directly to your SCADA, ERP, or cloud-based management systems.
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