Metal Detecting Weight Checking Machine | 2-in-1 Metal Detector & Checkweigher Combo

Running a metal detector and a checkweigher as two separate stations means double the floor space, double the alignment effort, and two disconnected data streams that never quite agree. The Metal Detecting Weight Checking Machine collapses both quality gates into one synchronized, single-frame system. Each pack passes first through a high-sensitivity metal-detection aperture, then immediately across a high-precision digital weighing platform — all on one continuous, frequency-controlled conveyor. A single high-speed A/D controller evaluates both signals against the active recipe and routes every non-conforming pack to the correct destination through a dual-lane rejection system: metal-contaminated items and over-/under-weight items are ejected into separate collection bins, so recovery, rework and root-cause analysis stay clean and traceable.

Engineered for packaged goods rather than loose bulk, the unit handles products up to 300 × 290 mm and 5 000 g, with weighing resolution down to 0.1 g and line rates up to 80 packs per minute. A color touchscreen, 99-product recipe memory, auto-learning setup and built-in Excel-style reporting with USB export make changeovers and audits effortless. Whether you pack snacks, ready meals, sausages, frozen foods, nutraceuticals, daily-care items or small electronics, this combo machine delivers metal safety and weight compliance from a single, space-efficient footprint — the smart consolidation point at the end of any packaging line.

Application Industries

Because it inspects finished, packaged units for two defects at once, the combination machine fits any sector where both foreign-body safety and declared-weight accuracy are mandatory:

Food & Beverage

Ready-to-eat meals, baked goods, sausages and ham, instant noodles, frozen products, seasoning packs, plus additives, colorants, modifiers and preservatives; verifies seal integrity weight and screens for foil, wire or blade fragments in one pass.

Pharmaceutical & Health-Care Products

Confirms blister/box count by weight and detects metallic contamination in cartons, bottles and sachets, supporting GMP batch records.

Cosmetics & Daily Chemicals

Checks fill weight of tubes, jars and bottles while screening caps, pumps and packaging for stray metal before retail.

Electronics & Light Industry

Validates component-kit weight and detects missing or extra metallic parts inside sealed retail packs.

Agricultural & Sideline Products

Inspects bagged nuts, grains, dried goods and gift packs for both weight giveaway and metal hazards prior to dispatch.

Industry Pain Points & Professional Solutions

A combined inspection point solves a unique cluster of line-design problems that single-function machines cannot. Each is addressed here with a dedicated capability.

Challenge — Two stations eat floor space and complicate line layout. A standalone detector plus a standalone checkweigher demand extra length, two conveyors to align and two sets of guarding.
Response: The integrated frame houses both apertures on one driven belt with a single control cabinet, cutting the inspection footprint roughly in half and removing inter-machine transfer gaps that cause jams.

Challenge — Metal faults and weight faults get mixed in one reject bin. When both defects dump into the same box, operators cannot tell whether to rework, scrap or investigate — traceability collapses.
Response: The dual-lane pusher system reads which sensor triggered and diverts the pack to the matching bin (METAL vs. WEIGHT), so contaminated product is quarantined while mis-weighted product can be re-dosed or re-weighed separately.

Challenge — Frequent SKU changeovers waste time re-tuning two machines. Adjusting detection and weighing parameters separately for every new pack is slow and error-prone.
Response: Up to 99 stored recipes recall both metal and weight settings at once, and the optional auto-learning function sets suitable parameters automatically from a few sample packs — no manual calibration per changeover.

Challenge — Weight drift from vibration and temperature shifts. Long runs cause zero-point creep that quietly erodes weighing accuracy.
Response: Manual and automatic zero-reset combined with continuous dynamic zero-tracking keep the scale baseline stable, while an optional static weighing mode stops the belt under the pack for high-precision reads on slow lines (< 20 packs/min).

Challenge — Audit and customer complaints need hard data, not guesses. Quality teams struggle to prove every pack was checked and within tolerance.
Response: The built-in report engine generates multiple real-time statistics in Excel-compatible format, exported live via the external USB port, while RS-485 + Ethernet ports feed results to a PC, printer, inkjet coder or upstream/downstream packaging equipment.

Challenge — Mis-weighted packs should correct the filler, not just be rejected. Throwing away over-filled packs wastes product; under-filled packs risk recalls.
Response: Through the communication interface the weigher can return results to the front-end filler or packaging machine, enabling automatic recipe/parameter correction and closing the loop on giveaway control.

Core Product Features & Technical Advantages

Single-Footprint Dual Inspection

Metal detection and dynamic checkweighing share one frame, one belt and one controller — halving installation length and eliminating the alignment headaches of two separate machines.

Dual-Lane Classified Rejection

A standard pusher (with optional air-blow, diverting-arm or turning-plate alternatives) sorts rejects by fault type into two dedicated bins, keeping metal-quarantine and weight-rework streams cleanly separated for compliant recovery.

High-Sensitivity Probe + High-Precision Load Cell

A sensitive detection head pairs with a high-resolution digital sensor and a fast A/D sampling controller, resolving Fe from φ0.5–0.8 mm and SUS304 from φ1.5 mm while weighing to ±0.5–±2 g with a 0.1 g display step.

Color Touchscreen with 99-Recipe Memory

A large color HMI presents an intuitive, human-centered interface; operators recall complete product profiles in one tap, and a factory-restore function safeguards baseline settings.

Auto-Learning Setup (Custom)

After creating a new recipe, the auto-learn routine derives optimal parameters from sample packs and stores them, so the next changeover is a single selection rather than a re-calibration.

Dynamic & Static Weighing Modes

Default dynamic mode suits continuous high-speed lines; the optional static mode halts the belt under each pack for elevated accuracy on low-rate products.

Variable-Speed Conveyor

A frequency-controlled (VFD) drive lets line speed be tuned parametrically from the HMI across 20–50 m/min to match upstream packaging cadence.

Zero-Tracking Stability

Manual or automatic tare plus dynamic zero-tracking compensate for drift, preserving weighing integrity over long shifts and temperature swings.

Connected Data Hub — USB / RS-485 / Ethernet

Standard dual communication ports plus an external USB drive interface deliver live Excel-format reports, support printer and inkjet-coder links, and enable Unicode Chinese string output (optional) for localized labeling.

Closed-Loop Filler Feedback

Weighing results can be transmitted back to the packaging or filling machine to auto-adjust dosing parameters, directly reducing over-fill giveaway and under-fill risk.

Hygienic 304 Stainless Build & Tool-Free Belt

The 304 SS frame and easily removable conveyor belt speed up cleaning and maintenance, while the standardized structure keeps the unit adaptable across product families.

Automatic Working Process

Technical Specifications

FAQ

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Looking to consolidate two quality gates into one efficient, traceable station?

Our application engineers will configure the right detection aperture, weighing range, reject method and communication package for your pack format — free of charge.