If you’ve ever worked with industrial weighing systems, you know that a load cell is only as reliable as the mounting kit holding it in place. A load cell might be precision-calibrated to measure weights within a fraction of a gram, but a poorly designed or improperly certified mounting kit can throw off readings, cause premature wear, or even lead to safety hazards on production lines, warehouse scales, or agricultural processing equipment. As a supplier of load cell mounting kits, I get asked this question at least once a week: Are there any official certifications for these kits? The short answer is yes—but not all certifications are created equal. Today, I want to break down what these certifications mean, which ones actually matter for your operations, and why cutting corners on certified mounting kits could end up costing you more in the long run. Load Cell Mounting Kit
Let’s start with why certifications matter for load cell mounting kits specifically. A load cell mounting kit isn’t just a set of brackets or bolts—it’s a critical interface between the load being weighed and the sensor that captures that data. If the kit flexes unevenly under load, or doesn’t properly isolate the load cell from side forces (called “off-axis loads”), the load cell’s readings will drift, even if the sensor itself is brand new. For example, a food and beverage plant I worked with last year was using generic, uncertified mounting kits on their bulk ingredient hopper scales. They kept getting inconsistent readings for raw sugar, which led to over-ordering and 10% more waste than their competitors. When they switched to a certified kit, their readings stabilized, cutting waste by almost 8% in the first three months. That’s not a small win—for a plant processing millions of dollars in ingredients annually, that certification directly translated to their bottom line.
Now, let’s dive into the specific certifications you’ll see (and should look for) when evaluating mounting kits for load cells. The first and most foundational certification is OIML R60. OIML stands for the International Organization of Legal Metrology, and R60 is the standard that governs load cells and their associated mounting components for legal-for-trade applications. What that means is if you’re using a scale for commercial transactions—like a grocery store produce scale, a truck scale used to bill customers for hauling, or a manufacturing scale that measures ingredients for product labeling—your entire system (load cell plus mounting kit) has to meet OIML R60 requirements. OIML certification ensures that the mounting kit is designed to properly support the load cell so it can deliver accurate, repeatable measurements over time, even under continuous use. As a supplier, all of our legal-for-trade mounting kits go through independent third-party testing to verify they meet OIML R60’s specifications for linearity, hysteresis, and off-axis load resistance. We don’t just test them in our lab—we send samples to accredited testing bodies to get that formal certification, because our customers need that documentation to pass regulatory inspections.
Next up is NTEP certification, which is specific to the United States, but it’s a big one for North American operations. NTEP stands for the National Type Evaluation Program, run by the National Conference on Weights and Measures. It adopts OIML R60 as a base, but adds extra requirements tailored to U.S. regulatory rules for legal-for-trade weighing. For example, if you run a farm supply store that sells grain by weight, or a waste management company that bills customers by the ton of trash disposed, your scale’s mounting kit has to be NTEP-certified. We’ve seen too many small businesses try to save money by using uncertified mounting kits, only to fail a state weights and measures inspection and have their scale taken out of service until they upgrade. The downtime from that inspection failure can cost thousands of dollars in lost revenue, and the certified kits cost only a fraction of that. For our customers in the U.S., we provide full NTEP documentation for all legal-for-trade mounting systems, so they can easily present it to regulators when needed.
Another key certification, especially for industries that operate in harsh environments, is IP ratings. IP stands for Ingress Protection, and while it’s not a metrology certification like OIML or NTEP, it’s critical for mounting kits used in food processing, outdoor construction, wastewater treatment, or agricultural settings where they’re exposed to moisture, dust, chemicals, or extreme temperatures. For example, a mounting kit used in a meat packing plant needs to be IP69K certified, which means it’s completely dust-tight and can withstand high-pressure, high-temperature washdowns without corroding or failing. We design our IP-rated mounting kits to exceed industry standards, and we test each batch for corrosion resistance and seal integrity to make sure they hold up even in the toughest conditions. A customer of ours that operates a saltwater aquaculture facility used a non-IP-rated kit for their feed hoppers, and within six months, rust had built up on the brackets, leading to a 15% error in their feed weight measurements. Swapping in our IP67-certified kits fixed that issue entirely, and they haven’t had a corrosion problem in three years.
You might also run into CE marking, which is mandatory for products sold in the European Economic Area (EEA). CE marking isn’t a certification in the same way OIML or NTEP is, but it indicates that the mounting kit meets EU health, safety, and environmental protection standards, including those for electrical and industrial equipment. For load cell mounting kits, CE compliance often ties back to other certifications like OIML R60 and ISO 9001, which brings me to my next point: ISO 9001. While ISO 9001 is a quality management system certification, not a product-specific test, it’s a sign that the supplier follows consistent, rigorous processes for designing, manufacturing, and testing their products. As a supplier, our entire operation is ISO 9001 certified, which means every mounting kit we make goes through the same set of design checks, material testing, and quality control steps before it leaves our warehouse. That consistency is just as important as the certifications themselves—because even a well-designed kit will fail if it’s manufactured with inconsistent materials or loose quality controls.
Now, let’s talk about the certifications that don’t matter, because there are a lot of knockoff claims out there. You might see a supplier advertise “custom certifications” or “industry-approved” with no formal third-party backing. Those are red flags. Any legitimate certification for load cell mounting kits will come from an accredited, independent testing body—like the National Institute of Standards and Technology (NIST) for U.S. standards, or the Physikalisch-Technische Bundesanstalt (PTB) for German OIML testing. If a supplier can’t provide a formal certificate from one of these organizations, or tries to sell you a “certified” kit that doesn’t list the testing body, that kit isn’t actually certified. We’ve had customers come to us after buying kits from a competitor that claimed OIML certification, only to find out when their inspector checked that the certification was fake. That’s a costly mistake, and it’s one we work hard to avoid by being transparent about all our certifications and providing copy of the official certificates for every order.
I also want to address a common misconception: not all load cell mounting kits need to be legally certified. If you’re using a scale for internal, non-commercial purposes—like a production line that measures raw materials to ensure quality control, or a warehouse inventory scale that’s only used for your own tracking—you might not need OIML or NTEP certification. But that doesn’t mean you can skip any certifications or testing. Even for internal applications, a certified mounting kit will still provide more accurate, reliable measurements, reduce wear on your load cells, and lower long-term maintenance costs. For example, a customer in the automotive parts manufacturing industry uses our non-legally-certified, ISO-tested mounting kits on their press line scales to measure the weight of metal blanks. Before they switched to our kits, they were replacing load cells every 18 months because of side force damage. Now, their load cells last four and a half years, cutting their replacement costs by 60%. That’s the value of a properly tested mounting kit, even when certification isn’t required by regulation.
So, how do you choose the right certified mounting kit for your needs? Start by defining what the scale will be used for. If it’s for commercial transactions, prioritize OIML R60 and NTEP (if you’re in the U.S.) certification. If it’s for a harsh environment, look for IP ratings tailored to that setting (IP67 for dust and water resistance, IP69K for washdown applications). Always ask the supplier for proof of certification—don’t take their word for it. At our company, we include a full set of certification documents with every order, and our customer service team is always available to answer questions about which certification is right for your specific application.
I’ve been in this industry for over a decade, and I’ve seen firsthand how a small choice—like picking a cheap, uncertified mounting kit instead of a tested, certified one—can snowball into big problems: inspection fines, downtime, wasted materials, and premature load cell failure. Load cells are precision instruments designed to give you accurate data, but they’re only as good as the system holding them. Certifications aren’t just boxes to check—they’re proof that a product has been tested to perform as promised, even in the conditions your operation faces.
If you’re upgrading your weighing system, or if you’ve been dealing with inconsistent readings or frequent equipment failures, I’d be happy to help you find the right certified load cell mounting kit for your needs. Whether you need legal-for-trade certified kits for a commercial scale, IP-rated kits for an industrial environment, or ISO-tested kits for internal use, we have the expertise to match you with the right product. Get in touch with our team to discuss your application, and we’ll provide all the certification documentation you need, along with recommendations tailored to your budget and operation. Don’t let a bad mounting kit derail your weighing processes—choose certified, reliable components that deliver consistent, accurate results for years to come.
Weighing Transmitter References
- International Organization of Legal Metrology (OIML). (2020). R60: Load cells. 7th Edition.
- National Conference on Weights and Measures (NCWM). (2022). NTEP Handbook for Weighing and Measuring Devices. 10th Edition.
- International Electrotechnical Commission (IEC). (2021). IEC 60529: Degrees of protection provided by enclosures (IP Code).
- International Organization for Standardization (ISO). (2015). ISO 9001: Quality management systems — Requirements.
- National Institute of Standards and Technology (NIST). (2019). Handbook 44: Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices.
Yixing Silvanus Electric Manufacture Co., Ltd.
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Address: No.30 Fukang Road, Xinjie Street, Wuxi, Jiangsu, China
E-mail: jacky@silvanus.cn
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