China Shenzhen Calinmeter Co,.LTD Company News

Structural Differences: Wet-Type: Higher accuracy at low flow rates, but prone to corrosion or sediment buildup due to direct water contact. Dry-Type: Counter isolated from water, reducing maintenance and water quality issues, but may have long-term stability concerns. Environmental Adaptability: Wet-Type: Best for stable conditions and mild climates, not ideal for industrial or extreme environments. Dry-Type: Highly adaptable, performs well in cold regions or areas with poor water quality. Cost Considerations: Wet-Type: Lower initial cost due to simpler structure. Dry-Type: Higher overall cost, but potentially more cost-effective in the long run due to lower maintenance costs and longer lifespan. Safety: Dry-Type: Better waterproofing and moisture-proofing, reducing leak risks. Wet-Type: Improved sealing but potential safety risks under specific conditions. Application Recommendations: Water Quality: Dry-type recommended for poor water quality systems. Geographical and Climatic Factors: Dry-type suited for areas with extreme weather or temperature differences. Budget Constraints: Dry-type may be more cost-effective in the long term. Installation Location: Dry-type preferred in spaces with limited access or difficult maintenance. Evaluate specific project needs for the right choice.

Testing Methods and Tools To accurately obtain the testing indicators for the differential upgrade project, we have adopted the following methods and technical means: Resource Size Detection: Use file system tools to accurately calculate the size of the differential package and compare it with the theoretical value; simultaneously, indirectly verify the compression effect through the differences between versions before and after actual deployment. Upgrade Speed Assessment: Set up automated scripts to simulate real user operation steps, record the start and end times of each upgrade, and calculate the average time taken; additionally, pay special attention to the performance of the first differential upgrade after the initial installation. Stability Testing: Construct multiple sets of experimental environments (including but not limited to Wi-Fi, 4G/5G mobile networks) and introduce random interference factors (such as weak signals, high latency) to increase testing difficulty; use a log monitoring system to track the status changes of each step in real-time, ensuring that any potential issues can be detected promptly. Testing Progress Currently, the testing work for the differential upgrade project is underway. Our team members are following the established plan and conducting a comprehensive and detailed examination of the new solution across multiple dimensions. To ensure the accuracy and reliability of the test results, we have set up a strict quality control process, where each test case undergoes multiple repetitions to ensure the data's high consistency and repeatability. Additionally, we have established a rapid response mechanism to address any problems or challenges encountered during the testing process, ensuring that we can adjust strategies and resolve issues promptly, allowing the testing work to proceed smoothly. Considering the broad scope and multiple stages involved in this testing, we anticipate that the complete testing cycle will last approximately two weeks. During this time, we will closely monitor the trends of all relevant indicators and collect detailed data for subsequent analysis. Upon completion of the testing, we will immediately proceed to compile a test report, listing the results of each test, any issues discovered, and suggestions for improvement. The final test results will be officially announced in two weeks, providing solid data support for the project's next decision-making phase. Conclusion and Outlook Although the complete test results are not yet available, the preliminary feedback indicates that the "Differential Upgrade" solution has shown promising potential. This not only saves the company significant operating costs but also provides strong support for subsequent product iterations. In the future, we will continue to optimize existing algorithms and explore more potential application scenarios, striving to equip each product with superior performance and a better service experience.

Adopting advanced PC+GF composite material to achieve high flame retardant, heat resistant, and UV resistant characteristics, to protect the user's electrical safety and equipment reliability. SHENZHEN, China, Dec. 13, 2024 -- CALIN, a leading company in the smart smart metering field, today announced its newly developed material solution for smart meter enclosures. The solution is made of composite materials with excellent physical properties and environmental adaptability, which not only significantly improves the safety and durability of the product, but also provides users with a more reliable electricity experience.   High-end material options: In order to meet the stringent safety and stability requirements of modern power systems, CALIN has adopted two different ratios of polycarbonate (PC) and glass fiber (GF) reinforcement for the terminal block and housing parts of the product upgrade.   Terminal blocks: Made of PC + 20% GF composite material, they can withstand the scorching wire test up to 960 degrees Celsius and meet the highest level of the International Electrotechnical Commission's IEC standard - Flame Retardant Class V0. This means that the terminal blocks maintain their structural integrity even under extreme heat, effectively preventing fire accidents from occurring. Fire incidents. In addition, the material has excellent ultraviolet (UV) resistance, ensuring that it will not deteriorate or discolor when exposed to outdoor conditions for long periods. Shell: PC was also chosen as the base material, with 10% glass fiber added for reinforcement. After the 750-degree Celsius burning wire test, it still maintains good mechanical strength and also meets the standard of flame retardant V0. At the same time, it also has excellent UV resistance, which ensures that the appearance of the smart meter is beautiful and long-lasting, and at the same time, it provides a solid protective barrier for the internal electronic components. Safety First: Building a Safe Power Grid "We have always prioritized the safety of our customers' electricity." JET (Chief R&D Engineer) said, "By introducing these high-performance materials, we aim to provide the safest and most reliable electricity smart meter products in the market. Whether in a busy city center or a remote rural area, every user can rely on our devices with confidence." The application of this new material not only reflects CALIN's unremitting pursuit of technological innovation but also is a concrete manifestation of the company's continuous commitment to improving product quality and service level. In the future, CALIN will continue to increase investment in R&D, explore more possible technological breakthroughs, and contribute to the healthy development of the whole industry. Environmental protection and sustainable development: shared responsibility It is worth mentioning that while pursuing high performance, CALIN also pays great attention to environmental protection and social responsibility. All materials used are in line with international environmental standards, and the production process minimizes energy consumption and waste emissions, striving to achieve a win-win situation in terms of economic and social benefits. With the increasing global focus on renewable energy and the accelerating pace of smart grid construction, we believe that this new smart meter housing from CALIN will stand out in the future market competition and become a benchmark in the industry.

Based on thousands of water smart meters, the Indonesian delegation looks forward to working with Chinese partners to promote the 'smart city' program   Shenzhen, China, 13 December 2024 -- A high-level customer delegation from Indonesia arrived in China today to discuss participation in the country's ambitious "smart city" project. The visit not only reflects the high interest of Indonesia in cooperating with Chinese companies in the field of smart infrastructure construction but is also an important visit based on the existing good cooperation between the two sides in the supply of smart water smart meters.   Success Story: Exemplary Smart Water Smart Meter Project Over the past few years, this Indonesian customer has purchased tens of thousands of advanced smart meters from our company, which have been widely used in water supply system renovation projects in many cities in Indonesia. With stable and reliable performance and excellent customer service experience, our products have won high trust and support from our customers. During this visit, the Indonesian representatives especially pointed out that based on the successful application of smart water smart meters, they see a bright prospect of exploring more possibilities with Chinese partners.   Highlights of the visit: in-depth exchanges and field trips To better understand China's smart city technology and practical achievements, the Indonesian delegation has arranged a series of colorful activities. These include visiting our R&D center and production base to have a visual experience of the whole process from R&D and design to manufacturing; at the same time, we will also hold a symposium with experts in related fields to have an in-depth dialogue on technological innovation, project implementation, and other aspects. In addition, the two sides have warmly discussed how to formulate practical and feasible cooperation programmes in light of the actual situation of the local community, and have reached several preliminary consensus.   Looking ahead: a new chapter of win-win cooperation The successful implementation of this visit marks a new level of cooperation between Chinese and Indian enterprises in the field of smart cities. By sharing resources and complementing each other's strengths, we believe that we will write more successful chapters together on the road to development in the future. As one Indonesian delegate said, "We value the trusting relationship we have built up with the Chinese side and look forward to continuing to move forward hand in hand on a broader stage."   The arrival of Indonesian customers is not only a recognition of our product quality and service level but also lays a solid foundation for future in-depth cooperation between the two sides. Next, we will be more open to meeting the challenges, committed to providing global customers with higher quality products and services, and jointly promoting the continuous development of smart city construction.

Project Background As an electrical meter software engineer, I am responsible for the "Differential Upgrade" project, which aims to optimize the existing firmware update mechanism for a more efficient and stable remote upgrade process. This improvement will not only significantly reduce data transmission volume and lower bandwidth costs but also shorten user wait times and enhance the user experience. After a period of development, the differential upgrade function is now complete, and the next step is to undergo rigorous testing to ensure that its performance and stability meet expectations. Testing Objectives The testing will focus on the following three aspects: Resource Size Detection: Verify that the actual size of the differential package meets the preset standards, ensuring that the upgrade package size is minimized without affecting the integrity of the functionality. Upgrade Speed Assessment: Measure the time required to complete the entire upgrade process from start to finish, compare it with the traditional full upgrade method, and analyze the efficiency improvements brought by the differential upgrade. Stability Testing: Simulate upgrade scenarios in different network environments to check for any interruptions, failures, or other abnormal conditions, and record the success rate of each attempt.

Please note that at the time of manufacture, the mechanical and digital error range is ±0.2m³. If the discrepancy falls within the specified range, it is deemed to be within normal limits. Should the discrepancy exceed the aforementioned range, it may be attributable to human error in the reading of the data at the time of manufacture. In this instance, the mechanical reading can be rectified via the system or infrared, ensuring that the mechanical reading aligns with the data reading.   Subsequent water meters that were corrected showed a larger deviation after a defined period of use.   A: The electronic counting method exceeds the mechanical counting method. 1. The circuit board is faulty, resulting in the electronic component generating false pulses and consequently increasing the count. 2. Please inspect the reed switch for any signs of malfunction and use a multimeter to test its electrical functionality. 3. Please verify the position of the magnet, as it is typically fixed in place upon installation. If the installation position is incorrect, this will result in an increase in the electronic count. Please note that the probability of a fault in the meter causing electronic counting to exceed mechanical counting is extremely low.   B: The mechanical count is greater than the electronic count. Check the reed switches on the counter, as damage can cause the numbers to jump or not count. First, check the reed switches. A fault in the circuit board can also cause the electronic part not to count, but the probability of such an accident is extremely low. A jump in the pulse sampling between the counter and the circuit board.   If there is a problem with your CALIN water meter, please contact WhatsApp：0085 29670 4905，WeChat：0086 15577479982, E-mail：schnappi@szcalinmeter

This client is visiting China for the first time and has expressed considerable interest in our smart electric meter.   At the outset Before, the client engaged in a detailed discussion with our team. During the course of the conversation, We extended an invitation to the customer to visit China and see our smart energy meter and factory production capacity in action.   We presented the prepaid electricity meters, which were customized in accordance with the specifications. We proceeded to demonstrate the functions of the smart energy meter in a methodical and detailed manner, ensuring that the client was able to gain a comprehensive understanding of its capabilities. Throughout the day, we provided the client with a comprehensive and clear explanation of the specific use of our meters and the rich and varied functions, demonstrating our commitment to patient and meticulous communication. As a result of this fruitful exchange and demonstration, both parties expressed satisfaction with the outcome, which has laid a solid foundation for future collaboration.   The following morning, we set off for the factory in Huizhou with high expectations, greeted by the soft morning light. Upon arrival, we proceeded to the factory to inspect the production process for the ST prepaid meter. During the process, The client demonstrated great enthusiasm and dedication, carefully observing each production process and actively experiencing each key step of the prepaid electricity meter production, from the assembly of parts to the final commissioning. This allowed us to gain a more in-depth and comprehensive understanding of the entire production process.

The purpose of this specification is to define the limits of error variation of measuring instruments under the influence of self-heating effects and their test methods. Specific error variation limits are set for Class 1 (Level 1) and Class 2 (Level 2) smart meters for different current strengths and power factors.   test step   Warm-up phase: First, the voltage circuits are powered under reference voltage conditions. This process should last at least 2 hours for class 1 smart meters and 0.5 hours for class 2 smart meters.   Current loading: Subsequently, the maximum rated current is quickly applied to the current loop without an initial current, and recording of the smart meter's error begins immediately.   Error monitoring: From the moment the current is applied, the instrument error shall be measured immediately at a power factor of 1 and the change in error over time shall be continuously monitored and an error change curve plotted. The entire test shall be maintained for at least one hour to ensure that the error fluctuation does not exceed 0.2 percent for any 20 consecutive minutes during this period.   Repeat Test: All the above steps should also be repeated at a power factor of 0.5 (inductive load condition) to fully evaluate the smart meter performance.   Cable requirements The length of the cable used to connect the test equipment should be fixed at 1 smart meter, and its cross-sectional area should be designed in such a way that the current density is maintained at a constant level between 3.2 A/mm² and 4 A/mm², thus guaranteeing the validity and accuracy of the test results.   Key points According to the provisions of Table 4, the increase in measurement error due to the self-heating phenomenon must be strictly controlled within the limits to ensure that the measurement data is true and reliable. Through these detailed test procedures, we are able to accurately evaluate the effects of self-heating that the measuring instruments may experience in the actual working environment, and thus provide a more accurate measurement service. At the same time, this series of rigorous test standards reflects our high commitment to product quality and customer satisfaction.