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The right X-ray inspection system isn’t necessarily the newest, fastest, or most expensive machine on the market.
Choosing the right X-ray equipment isn’t just about comparing brands or selecting the newest technology. The best system is the one that matches your products, production environment, inspection requirements, and of course, up-front cost.
Start By Assessing Your Application’s Difficulty The more challenging these factors are, the fewer suppliers can reliably meet your needs. Any of these factors can classify your application as difficult by itself, with the exception of non-standard requirements.
Image Complexity (Noise) Addressed with better detector resolution and algorithm performance in your application A loaf of cheese produces a clean, consistent image, making contaminants easy to spot. A bag of French fries or peanuts creates a noisy image because many individual pieces overlap. The noisier your product, the more difficult it is.
Density Difference Addressed with better detector resolution and algorithm performance in your application Contaminants are easiest to detect when they’re much denser than the surrounding product. Virtually any X-ray system can detect stainless steel in cheese. But detecting rubber in cheese or a golf ball in potatoes is much more difficult because the density difference is much smaller.
Product Mass Addressed with higher-powered generators The more material X-rays must penetrate, the more powerful (and expensive) the generator you need. A small loaf of cheese can be done by about anyone, and a cheese wheel is only doable by a few.
Line Speed Addressed with better computer hardware, algorithm performance, and/or method (PXT) Higher line speeds restrict the amount of time you have to capture and process images, and higher-resolution detectors create more data to process. Generally if you need high performance above ~100 fpm or low performance above ~160 fpm, your application is considered difficult.
Auxiliary and Non-Standard Requirements Additional inspection tasks like item counting, weight verification, fill-level checks, package integrity, or fat analysis reduce the number of suitable suppliers. So do specialized requirements such as washdown construction, cold environments, or boutique needs like pipeline.
Identify Your Suitable Suppliers The “better” suppliers are those who are more flexible, because it takes better hardware and knowledge to accommodate the harder applications — and if they do the hard applications, they do them all. If you know who they are, great! If not, keep reading or see the complete guide where we rank them.
Easy Applications If your product doesn’t suffer the ailments listed above, most suppliers will do it, and the primary concerns for you are service and maintenance costs. Competence of technicians isn’t a big issue on the service side because your application is easy, so you want to pick a provider with technicians or facilities near you. It’s difficult to assess all repair costs, but the primary indicator of this will be generator power, because larger generators will last longer when de-tuned. In general, higher-powered generators will cost more up-front, but less in the long-term. So if upfront cost is your primary concern, go with a cheaper manufacturer. If long-term costs are more important, you’ll want one of the more “flexible” companies, even though your application is simple.
Difficult Applications For difficult applications, a supplier’s efficacy will be determined by the following items, which you will want to compare between offerings.
Machine Specs If your application is atypical, finding the suppliers who can accommodate you will narrow your search considerably, so start here. Also note that machine sizes are nonstandard, though there are common sizes. As you can see in the table—which lists units by inspection area at the belt—some OEMs will have a machine closer to the minimum size you need, which may save unnecessary costs.
Number of Beams Beam count over 2 is only necessary for side-shooters when inspecting bottles and other packages with lids that will obstruct the beams. For all other applications, you want two, also known as dual energy.
Detector Resolution Detectors range from 0.1mm spacing to 1.2, so this is the easiest way to weed out the companies who have stopped advancing. Having a difficult application, you will want 0.4mm spacing between your diodes, but note that 0.1 is not necessarily better because the returns are diminishing and it will place a low cap on your line speed.
Photon-Counting Photon counting is superior but expensive, nearly doubling the cost of small machines, and adding 50-20% cost as they get bigger. Get your product tested with it against traditional dual-energy to see if the benefit is worth the price tag.
Experience How well a technology is applied is just as important as the technology itself. Ask the potential candidates about their experience with your application and x-ray in general, and get testing done by those who seem the most competent.
Service Costs Cost of service is more important for difficult applications than simple ones, so ask for a contract with actual rates you will experience; some manufacturers bill differently based on location, and some OEMs make their money with low entry costs and exorbitant parts costs.
Final Thoughts The right X-ray inspection system isn’t necessarily the newest, fastest, or most expensive machine on the market. It’s the one that consistently meets your inspection requirements while fitting your production environment, staffing, maintenance capabilities, and budget. Machine specs are a good starting point to reduce the number of emails you send and samples you send out. But once you have the candidates narrowed down, the test results, service contracts, and wear part replacement costs will make the decision for you.
Source
- packagingtechtoday.com (2026-10-08) - Original article: How to Choose the Right X-ray Equipment - Packaging Technology Today - https://packagingtechtoday.com/featureds/how-to-choose-the-right-x-ray-equipment