Stable product path
The aperture, conveyor width, metal-free zone, weighing section and reject point are engineered as a continuous product-handling path.
Two critical checks, one line section
Combination metal detector and checkweigher systems
Bring contaminant detection and automatic weight inspection together in a coordinated system. A combination unit can reduce footprint, simplify product transfer and provide a consistent reject and line-control philosophy while keeping the two inspection results distinct.
01Compact integrated layout
02Coordinated fault handling
03Independent inspection results
System design
Integrated mechanically and logically
The detector aperture, metal-free zone, weigh conveyor and rejection must form one stable product path while preserving separate contaminant and weight decisions.
Clear fault separation
Operators can distinguish a metal-detection event from an underweight or overweight result for investigation and record keeping.
Validation access
The layout can provide practical access for performance checks and challenge testing without compromising normal guarding.
Fail-safe responses
Reject confirmation, bin-full monitoring, air-failure sensing and stop logic can be selected according to the risk assessment and customer standard.
Specification
Define both inspection duties
- Product effect, pack material and required metal test pieces
- Aperture size, belt width and metal-free-zone requirements
- Target weight, permitted variation and dynamic performance
- Whether faults use a common or segregated reject route
- Challenge-test access and reject reconciliation procedure
- Line-stop conditions and upstream/downstream interlocks
- Batch records and reporting needed from each inspection technology
Line integration
A shared footprint without blurred responsibilities
Although the machines are combined, contaminant detection and weight control remain separate quality functions. The user requirement should define sensitivity, weight limits, test procedures, reject segregation, permissions and records for each. This creates a system operators can validate and investigate with confidence.
Typical applications
Packaged foodNutraceuticalsPharmaceutical productsDry powders and granulesBakery and confectioneryConsumer-goods cartons
Application-led engineeringPack handling · Weighing · Rejection · Data
Oxford Vision Systems
Combine weight with barcode, label and product verification
Barcode or vision checks can be added where needed, but they must not obscure detector testing, weight verification or the recorded reason for rejection.
Discuss integrated inspectionFrequently asked questions
Questions about combination systems
These answers cover reject routing, separate records, detector sensitivity and the feasibility of integrating an existing detector.
Does a combination system use one reject device?
It can use a common reject, or separate reject routes can be specified when your procedure requires faults to be segregated. The correct arrangement depends on the risk assessment and available space.
Can both results be recorded?
Yes. Metal-detection events and weight classifications can be displayed and recorded separately, even where the mechanical system is integrated.
Will the checkweigher affect metal-detector sensitivity?
The mechanical layout must respect the detector manufacturer's metal-free-zone and installation rules. This is addressed during the integrated design.
Can existing metal detectors be combined with a new checkweigher?
Sometimes. We first review the detector, aperture, conveyor, controls, available length and conformity boundaries before recommending integration or replacement.
Continue your research
Related checkweighing systems
Hygienic weight control
Food
Inspect every finished pack for underweight and overweight conditions while giving production teams a live view of process drift. Systems can be configured for open or wrapped food, dry or wet areas, and straightforward or frequent product changeovers.
Explore system
Positive non-conformance control
Reject systems
A weight result only protects production when the correct item is removed and its removal is confirmed. We select the reject principle around pack behaviour, throughput, available length and the way your quality team needs to contain and reconcile non-conforming product.
Explore system
Turn weights into evidence
Production data
Make weight inspection information useful beyond the machine HMI. From simple batch reports to line-level data exchange, we define the records, identifiers, retention and interfaces your production and quality teams actually need.
Explore systemPlan the complete inspection point
Related checkweigher decisions
Use the next guide that matches the engineering or quality question behind your project.
Your application, properly defined
Let’s specify the checkweigher your line needs.
Share pack details, target weights, line speed and any inspection or data requirements.