Xian Ruijia Measurement Instruments Co., Ltd is a professional manufacturer of sensors in state-level high-tech industry development zone, Xi’an of China. Since 2005, We focused on development and production of pressure sensor, weighing sensor etc. Xian ruijia have first-class technical team, with strong R & D capability and rich experience in production management. In the production line, we have the most advanced and completed sets of equipment to ensure product quality and reliability. Xian ruijia brings together the top professional talents and technology. The software and hardware of our advanced testing equipment designed by our professional and technical personnel. We have obtained several utility medel patents from National Patent Office. We provide customers with affordable, high-quality products. In order to achieve the advantages of Asia, the full benefit in terms of quality and cost, procurement of key components from Germany and the United States, and the production and manufacturing in China. We have the best supply chain in China and parts manufacturers, and a solid record of quality and innovation, to prove that our many years performance of the sensor. Quality product performance and good reputation, our products are not only successful sales in China, and have been exported to more than 50 countries and regions in the world, including: Germany, Japan, Italy, Russia, Japan, South Korea, Turkey, Brazil , India, the United Arab Emirates, Saudi Arabia and other countries, the products are subject to a great welcome and praise. Looking forward to the future, the company is moving into the fast lane of development and will continue to adhere to the concept of creating quality products to serve global customers. Our mission is to be the most valuable and competitive automotive sensors in the world.

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What are the reasons for the high price of imported weighing sensors? 2025-11-07 What are the reasons for the high price of imported weighing sensors? Why Are Imported Load Cells So Expensive?Many people are curious about this. Obviously, their functions seem quite similar, but the price of imported ones is much higher. Today, let's take a good look at the four reasons behind this. First, let's talk about material selection and manufacturing process. Take a look at those high-end imported sensors. Even laypeople can see the difference. The surface treatment is very exquisite, and the details are well done. At first glance, you can tell this thing is reliable and worth the money. Take alloy steel materials, for example. There's a lot of knowledge here. Some high-end brands don't start production immediately when they get alloy steel materials. Instead, they first put them outside, letting them be exposed to wind, sun, and rain for three months or even half a year. This is called OAT aging treatment. Doing this can greatly improve the mechanical properties of the alloy steel, making the sensor more durable and long-lasting. Especially, it can improve the repeatability of the metal, which is very important for the sensor. So, sensors that have undergone aging treatment are definitely much stronger than those that haven't, and the cost naturally goes up. Next, let's talk about the force-bearing structure. Many imported load cells have a wide variety of shapes, which are quite different from the common ones in China. Some even look quite strange. Don't underestimate this shape. This is where their strength lies. Some manufacturers will specially design according to your usage situation. For example, if you need to weigh in a small space or use it on a special device, they will study a suitable force-bearing structure based on the site's characteristics. That's why the shapes are so diverse, but when you use them, you'll find that they are really more accurate than sensors with ordinary structures. This is a bit like custom tailoring. Customized things are definitely more expensive. The third reason is selection. There's an open secret. Now, the processing and production of many imported sensors are done by domestic manufacturers, but the products of the two are still different. For example, an imported brand produces 500 sensors. During the factory testing, they will select 200 to 300 with better performance. These sensors are often more linear, have smaller errors, and are less affected by temperature. Through this selection, the high performance and consistency of the product are guaranteed, and the accuracy is higher when used. The cost of this process also drives up the price. Finally, it's brand effect. It's like a brand-name car and an unknown brand car. The brand value is different. The big brands of imported load cells have accumulated reputation over a long period of time, making consumers feel more reliable and the accuracy more guaranteed. This recognition of the brand also makes the price remain high. But having said that, in recent years, the domestic load cell industry has developed very rapidly. In 30 years, domestic sensors have become quite good. Many products are not inferior to imported ones in terms of performance and quality. The potential of the domestic load cell industry is even more promising. With the continuous iteration of technology, we will pay more attention to material selection, and the manufacturing process will continue to advance. It's possible to develop a material optimization method that is more efficient than OAT aging treatment. In terms of force-bearing structure design, there will be more innovations combined with domestic actual working conditions. It will no longer just follow the steps of imported brands, but can come up with unique structures with independent intellectual property rights to meet the needs of more special scenarios. The selection process will also become more refined and intelligent. With the help of advanced testing equipment and algorithms, every domestic sensor that leaves the factory will maintain a high standard. Moreover, as the market recognition of domestic sensors continues to improve, the brand influence will also become greater and greater. In the future, our own brands may occupy a place in the international market like the current big imported brands, making "Made in China" a synonym for high precision and high reliability. At that time, when consumers mention load cells, the first thing they may think of is our excellent domestic brands. Domestic sensors can also win the due market position and price space with their strength and reputation, truly realizing the leap from follower to leader.

From feed control to defense: three major breeding applications of weighing sensors 2025-11-07 From feed control to defense: three major breeding applications of weighing sensors In the journey of modern aquaculture towards intensification, intelligence, and refinement, load cells have risen from auxiliary tools to indispensable core sensing components. These precise "electronic scales" are quietly embedded in feed towers, hung on fences, or laid under passages, continuously converting physical weights into accurate electrical signals, providing a solid data foundation for scientific decision-making in the aquaculture process. ### I. Precise Feeding: A Core Tool for Optimizing Feed Costs Feed costs typically account for 60%-70% of the total investment in aquaculture, making precise control crucial. Load cells play a significant role in the feeding process: installed below the hopper of automatic feeders, they monitor feed consumption in real time; integrated at the bottom of dry feed towers, they accurately track inventory changes. The system intelligently adjusts the feeding speed and duration based on continuously collected weight data, ensuring each animal receives a precisely proportioned daily ration, eliminating waste and avoiding nutritional deficiencies. Meanwhile, long-term data accumulation can accurately calculate key economic indicators such as feed conversion ratio and feed-to-egg ratio, providing irrefutable data support for optimizing feed formulations and reducing aquaculture costs. ### II. Health Monitoring: An Early Warning Sentinel for Individual and Group Health Changes in animal body weight are the most direct barometer of health status. In intelligent aquaculture farms, load cells are ingeniously integrated into passages or specific stations. When individual livestock (such as pigs and cattle) pass by or stand, the system automatically completes rapid, non-contact weighing (benefiting from advanced dynamic weighing algorithms) and automatically associates individual identities (such as through RFID ear tags). Through real-time comparative analysis of individual weight gain curves and the group average level, the system can敏锐 identify individuals with stunted growth, latent diseases, or stress responses. This early warning enables managers to quickly isolate sick animals, provide precise treatment, effectively interrupt disease transmission, significantly reduce mortality, and improve overall production efficiency. ### III. Efficiency Management: A Data Engine for Improving Production Benefits The data flow provided by load cells is the core driving force for promoting refined management in aquaculture farms. In the breeding stage, accurately recording the weight changes of sows is a key basis for optimizing breeding timing,pregnancy period nutrition management, and farrowing preparation. In the growing stage, continuous group weight data can accurately assess growth performance differences among different batches, different pens, and even different feed schemes. Combined with environmental sensor data (temperature, humidity, ammonia gas, etc.), managers can deeply analyze the multi-dimensional factors affecting weight gain and optimize environmental control strategies. In the marketing stage, the passage weighing system efficiently completes the weighing of the entire batch of live livestock, providing timely and accurate basis for pricing and transportation arrangements, greatly improving logistics and financial efficiency. Load cells are like an "invisible hand" embedded in the aquaculture process, silently weaving a perception network composed of precise data. From the precise feeding of every gram of feed, to the acute observation of every livestock's health, and then to the scientific improvement of overall operational efficiency, these precise force-sensing components are profoundly reshaping the management paradigm of the aquaculture industry. By embracing this technology, aquaculturists grasp the technological key to achieving cost reduction and efficiency improvement, enhancing animal welfare, and ensuring product safety in fierce competition, and steadily move towards a new era of data-driven smart aquaculture.

How to judge the quality of the belt scale sensor? Deep analysis of key test items 2025-11-07 How to judge the quality of the belt scale sensor? Deep analysis of key test items As the "nerve endings" of belt scale systems, the performance of load cells directly determines the accuracy of material metering and the reliability of the system. Once a sensor fails or its performance deteriorates, it will lightly cause measurement errors and economic losses, and heavily lead to production data chaos or equipment 连锁 failures. Mastering scientific and effective sensor detection methods is a core skill for ensuring the long-term stable operation of belt scales. I. Basic Static Detection: Parameters and Insulation Resistance Measurement: Disconnect all wiring, and use a high-precision multimeter to measure the input terminals (usually marked as EXC+, EXC-) and output terminals (SIG+, SIG-) of the sensor. Compare with the nominal values provided by the manufacturer (common input resistance is about 3800Ω ± 10Ω, output resistance is about 350Ω ± 3Ω). Significant deviations usually indicate damage to internal strain gauges or wiring. Insulation Resistance Test: Use a megohmmeter (500VDC gear). Measure the insulation resistance between the input and output terminals of the sensor bridge and the sensor body (housing/ground terminal) respectively. The qualified standard usually requires insulation resistance ≥ 5000 MΩ (or higher standards from the manufacturer). Insufficient insulation (especially down to several tens of MΩ) is often caused by internal moisture, contamination, or electrical isolation damage, which is very likely to cause unstable signals or interference. II. Dynamic Signal Analysis: Zero Point and Sensitivity Zero Output Detection (No Load): After confirming that the belt scale is installed normally, the belt runs stably without material, connect the instrument. Record the zero load value displayed by the instrument (unit: mV/V or instrument scale value). Compare with the initial stable value or the manufacturer's specified value. Zero drift beyond the allowable range (such as ±0.1% FS or as specified by the manufacturer) may indicate sensor overload fatigue, temperature compensation failure, or structural deformation. Sensitivity and Linearity Check: If conditions permit, conduct a simple dynamic weight testing. Place standard weights (such as chain weights, hanging weights) at known belt positions and let the weights pass through the weighing area completely. Observe the difference between the instrument display value and the actual value. Significant errors (such as >0.5%) or abnormal signal fluctuations (毛刺，jumps) strongly indicate sensor sensitivity degradation and nonlinearity or core component damage. This step can effectively expose hidden dangers that are difficult to detect only by static testing. III. Physical State and Installation Verification External and Mechanical Inspection: Carefully check whether the sensor itself has obvious physical damage: such as shell cracking, severe corrosion, and obvious deformation of the force-bearing part. Check whether the contact surface between the sensor and its installation base (weighing idler) is flat, clean, and free of foreign matter. Ensure that all installation bolts are tightened according to the manufacturer's specified torque, without loosening or over-tightening leading to strain deformation. Load Transfer Inspection: The core is to confirm that the material weight effectively acts on the sensor. Observe whether the heights of the weighing idler and its adjacent idlers are level (can be checked with a ruler or tension line). Check whether the idlers in the weighing area rotate flexibly, without dead spots, material sticking, or excessive wear. Check whether the belt runs smoothly in the weighing section, without deviation, slipping, or abnormal tension changes. Any mechanical problem that hinders the effective transmission of gravity to the sensor will manifest as a sensor "failure". For the daily maintenance of belt scale load cells, multi-dimensional diagnosis integrating electrical parameters, dynamic signal performance, and mechanical status is required. Regularly perform basic static detection (resistance, insulation) to predict potential failures; focusing on zero point stability and simple dynamic test results is the key to judging core performance; and rigorous physical state and installation inspection can eliminate a large number of "false sensor failures". Only by systematically implementing these steps can we ensure that the sensor, the "gatekeeper" of material metering, has accurate and reliable data, providing a solid guarantee for production management.

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