Machine Vision Solutions
Quality Inspection Systems
Reliable vision quality inspection that catches label, print and packaging defects before products leave site.
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Quality Inspection Systems Overview
Kelgray delivers in-line quality inspection systems that verify labels, codes and packaging features at production speed. We combine industrial cameras, lighting and proven inspection logic to keep decisions consistent and downtime low. Each solution is configured around your products, line speeds and compliance needs, then supported UK-wide for long-term reliability.
Service information
Quality Inspection Systems are designed to make the “last check” dependable. We build complete vision stations—camera(s), optics, lighting, triggers, enclosures and reject devices—so every unit is assessed the same way, at line speed. Typical checks include label presence and alignment, variable-data legibility (dates, batch/lot, allergen or serial data), print quality, closure or seal presence, fill-level confirmation, count/kit completeness and surface defects.
Reliability comes from controlling the inspection environment. We create consistent illumination, stable mounting and repeatable triggering, then validate performance across real product variation, not just best-case samples. From there, we integrate pass/fail outputs and inspection data into your PLC, HMI and higher-level systems, and we document the setup so it stays stable as SKUs change. We specify hardware with dependable supply routes and support plans, then train operators so decisions stay consistent, shift-to-shift.
With end-to-end delivery and UK-wide support, we keep your inspection consistent, serviceable and ready for audit.
Why Quality Inspection Systems?
Quality leaks are expensive
Rework, returns, complaints and recalls. Reliable in-line inspection catches issues immediately, protects customers, and stabilises throughput, especially where manual checks can’t keep up at line speed.
In regulated environments, you need evidence, not assumptions
Our systems log images, results and reasons for reject, supporting audits, traceability and continuous improvement, without slowing the line for every batch.
Every site is different
We tailor cameras, lenses, lighting and algorithms to your products, then integrate with conveyors, printers and PLCs so the station works reliably within existing controls seamlessly.
Long-term reliability requires care after go-live
We commission against agreed acceptance criteria, provide training and documentation, and support UK-wide with spares and preventative maintenance so performance stays consistent for years.
Quality Inspection Systems
Looking for barcode capture rather than full inspection? Our Automated Barcode Scanner Solutions deliver high read-rates on moving items, feeding accurate data to your PLC, WMS or ERP for traceability.
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Our Frequently Asked Questions
Here are all of the answers to your most common questions around Machine Vision Solutions:
We can inspect labels (presence, position, orientation), print quality, dates/batch/lot text, barcodes and 2D codes, seals/closures, fill levels, tamper evidence, component presence/absence, and pack completeness. The camera setup and lighting are selected to suit your packaging materials—card, film, foil, glass, plastics—and your line speed. For food & drink and FMCG, that often means label and date-code validation; for pharmaceuticals, serialised data and leaflet/pack checks; for logistics and manufacturing, correct part and kit confirmation.
Reliability is engineered, not assumed. We control the inspection environment with dedicated lighting, shrouds where needed, and stable mounting to prevent drift. We then set exposure and triggering to suit your line speed, so images are repeatable and decisions are consistent. Before go-live, we test across real production variation (different suppliers, label stocks, print settings and temperature-driven changes), agree acceptance criteria, and tune for low false rejects without letting true defects escape. If your product mix changes, we use recipes and documented settings so performance stays consistent shift to shift.
Yes. We design the station to work as part of your line, not as a standalone ‘black box’. We can interface to PLCs using discrete I/O or industrial Ethernet, provide clear pass/fail and fault states, and coordinate timing for reject devices using encoder or trigger signals. Where required, we can also pass results and images to your HMI, SCADA/MES or business systems for traceability and reporting. Our goal is simple operation for your team: straightforward changeovers, clear alarms, and reliable performance within your existing controls.
When a defect is detected, the vision system sends a timed pass/fail signal to the line controls. The PLC then actuates the chosen reject method—air blast, pusher, diverter gate, stop-and-alert, or robotic removal—at the correct point on the conveyor. We design the timing around line speed, product spacing and any accumulation zones, so good product keeps flowing and rejects are repeatable. If you need it, we can add reject confirmation (for example, a sensor to prove the bad pack left the line) and event logging for audit and root-cause analysis.
Automated barcode scanning focuses on reading the code data reliably at speed, so the right information reaches your systems. Barcode verification goes further by grading print quality against recognised standards, helping you diagnose why codes fail downstream. Quality inspection is broader again: we can check the label is present and correctly positioned, the right artwork is on the right product, variable data is legible, and packaging features (closures, seals, counts) meet your rules. On many lines we combine these checks in one inspection station so you get a single, dependable ‘go/no-go’ decision.
We support the full life cycle. After installation we handle commissioning, operator and engineer training, and handover documentation so the system can be run and maintained confidently. Ongoing, we can provide preventative maintenance, calibration checks where applicable, and a practical spares strategy to reduce downtime. If your packaging, suppliers or print settings change, we can re-validate and update inspection parameters so reliability is maintained rather than ‘tweaked’ informally on the line. The aim is long-term stability: predictable results, clear accountability, and rapid support when you need it.
By catching errors early and consistently, an inspection station reduces rework, scrap and the need to ‘over-check’ or over-label product just to feel safe. It also helps you avoid wasteful downstream failures, such as customer chargebacks or rejected shipments caused by unreadable codes or misapplied labels. Because we tune reliability properly (low false rejects as well as low escapes), you avoid throwing away good product. Over time, the logged inspection data can also highlight upstream issues—print settings, applicator drift, film changes—so you can correct root causes and reduce material waste.

