ZONESUN ZS-MD818 Automatic Checkweigher & Metal Detector with Reject System

Description

The ZONESUN ZS-MD818 / ZS-MD910K Automatic Checkweigher & Metal Detector combines dynamic weight inspection, inline metal detection and automatic rejection in one continuous system.

It supports products up to 3000 g, with weighing accuracy of approximately ±0.3–1 g and speeds up to 80 pcs/min. Non-conforming products are automatically removed by the push-rod reject system.

Two versions are available: ZS-MD818 with button-operated controls and ZS-MD910K with an LCD interface and data copy function. Both models use SUS304 stainless steel and are suitable for food, pharmaceutical, chemical and other production lines.

Technical Specifications

• Power Supply: AC 220V ±10%, 50Hz (60Hz)
• Rated Power: 0.15 kW
• Metal Detection Channel: 150 × 210 mm (H × W)
• Metal Detection Sensitivity: Fe ≥1.0mm; Cu ≥1.5mm; SUS ≥2.0mm
• Single Weighing Range: ≤3000g (customizable)
• Weighing Accuracy: ±0.3g to ±1g
• Minimum Division: 0.1g
• Conveyor Speed: 20–90 m/min
• Maximum Speed: 80 pcs/min
• Weighing Product Size: ≤280 × 200mm (L × W)
• Reject Method: Push-rod type
• Control System: High-speed A/D sampling controller
• Preset Product Numbers: 100
• Operating Direction: Left infeed, right outfeed
• External Air Supply: 0.6–1.0 MPa
• Air Inlet Interface: Φ8mm
• Working Environment: -15°C to 60°C; humidity 30%–95%
• Machine Material: SUS304 stainless steel
• Weighing Conveyor Belt Size: 400 × 210mm (L × W)
• Machine Dimensions (L×W×H): 2400 × 855 × 1180mm

Touchscreen Control Panel

Allows operators to set target weight, tolerance limits and operating parameters while monitoring inspection results and machine status in real time.

Button-Type Metal Detector Controller

Allows operators to set detection parameters and sensitivity through a simple button-operated interface for convenient product metal inspection.

Metal Detector

Detects ferrous, non-ferrous and stainless-steel metal contaminants as products pass through the inspection tunnel.

Dynamic Weighing Conveyor

Measures product weight during continuous conveying and compares each product against the preset acceptable weight range.

Automatic Reject System

Automatically removes products that contain detected metal contaminants or fall outside the preset weight range, allowing qualified products to continue downstream.

Why Combine Checkweighing & Metal Detection?

The checkweigher verifies product weight, while the metal detector checks for detectable metal contamination. Combining both functions helps simplify the production line and centralize rejection of nonconforming products.

Before Ordering

Please provide:

• Product and package dimensions

• Target weight and tolerance

• Packaging material

• Required metal-detection sensitivity

• Target production speed

• Conveyor height and direction

• Available compressed air

• Product samples for testing

Frequently Asked Questions

Can it detect metal through every package?

No. Product and packaging materials can affect detection performance. Metalized packaging requires separate evaluation.

Is ±0.3 g to ±1 g accuracy guaranteed?

No. This is the listed weighing accuracy range. Actual performance depends on the product and operating conditions.

What is the difference between ZS-MD818 and ZS-MD910K?

The ZS-MD818 uses button controls, while the ZS-MD910K features an LCD interface with data-copy functionality.