China Shenzhen Calinmeter Co,.LTD Company Cases

A dual-source smart meter, as the name suggests, is a smart smart meter that can accurately measure power usage from each of two separate power sources. Specifically, if a home or business is connected to both the national grid (Source 1) and a standby power source provided by the community property (Source 2), then in the event of a national grid blackout or other special circumstances that result in the need to switch to the property's power generation, the dual-source smart meter will be able to automatically identify and record the power data obtained from these two different sources, ensuring that every kilowatt hour (kWh) used is accounted for.   How dual source smart meters work and their advantages Accurate smart metering: Advanced sensing technology and algorithmic processing are used to maintain a high degree of accuracy even in complex and changing power usage environments; Real-time monitoring: By connecting to the internet platform through the built-in communication module, users can view their home's electricity consumption anytime, anywhere, including but not limited to specific daily, weekly, and even monthly consumption; Clarity of costs: The rules for calculating electricity bills may vary for different sources, for example, the national grid charges according to government pricing, while community self-generation is billed according to the cost-plus principle. Dual-source smart meters can help property managers and tenants to clearly define the amount payable by each of them, avoiding disputes due to asymmetry of information;

The adoption of Internet of Things (IoT) technologies in smart grid systems has revolutionized the way energy consumption is monitored and managed. One of the most promising technologies for enabling efficient communication in smart meters is LoRaWAN (Long Range Wide Area Network). LoRaWAN is a low-power, long-range wireless communication protocol that has been gaining traction due to its advantages in smart metering applications. In this article, we will explore why LoRaWAN is an ideal choice for smart meters. 1. Long Communication Range and Low Power Consumption LoRaWAN operates on LoRa (Long Range) technology, which offers remarkable long-range communication with minimal power consumption. In smart metering systems, this is particularly beneficial as meters are often deployed in remote or hard-to-reach areas where traditional cellular or Wi-Fi networks may not be practical or cost-effective. The long-range capability of LoRaWAN can extend in rural areas and several kilometers in urban environments. This enables utility companies to monitor meters distributed over a wide area, reducing the need for costly infrastructure and improving the overall coverage. Moreover, the low-power consumption characteristic of LoRaWAN ensures that smart meters can operate on battery power for several years without needing frequent maintenance or battery replacement. This makes LoRaWAN an ideal choice for applications where devices are spread out over large areas and need to operate autonomously without the need for constant recharging. 2. Supports Large-Scale Device Connectivity and Data Transmission Smart metering involves large-scale deployments, often with thousands or even millions of meters deployed in a given region. LoRaWAN's scalability makes it an excellent fit for this kind of setup. The protocol supports the simultaneous connection of a vast number of devices in a dense network, which is essential for utilities to collect data from a large number of smart meters in real-time. LoRaWAN uses a star topology, where multiple meters communicate with a central gateway, which then transmits the data to a back-end system for analysis. This architecture ensures that the communication network remains highly reliable and efficient even as the number of connected devices increases. In addition, LoRaWAN offers bi-directional communication, enabling both the transmission of data from the meter to the central system, and the remote control of devices, such as remotely adjusting meter settings or even disconnecting or reconnecting services. This functionality enhances the efficiency of utility management and operations. 3. Ideal for a Wide Range of IoT Applications LoRaWAN’s versatility is another reason it is a preferred choice for smart meters. It is not only suited for energy meters but also for a variety of other IoT applications such as water and gas meters, environmental monitoring systems, and building automation. For energy metering, LoRaWAN allows utilities to gather valuable data on energy consumption patterns, which can be used for billing, energy management, and even predictive maintenance. In addition, the same network infrastructure can be used to collect data from other IoT devices in the smart grid, such as temperature sensors, voltage monitoring systems, and grid management tools. The ability to integrate multiple IoT devices into one unified communication platform further enhances the cost-effectiveness and efficiency of smart grid systems. Utilities can streamline their operations by using a single, standardized protocol (LoRaWAN) across different types of devices, reducing the complexity of managing various networks and ensuring more seamless In conclusion, LoRaWAN provides a range of advantages that make it an ideal choice for smart metering applications. With its long-range communication, low power consumption, scalability, and versatility, LoRaWAN offers a reliable, cost-effective, and efficient solution for connecting a large number of smart meters and other IoT devices. As the demand for smart grid technology continues to grow, the role of LoRaWAN in enabling intelligent, sustainable, and well-connected infrastructure will only become more significant. Please contact us: audrey@szcalinmeter.com Wechat /WhatsApp: +8615828477260

Subtitle: When the national grid coexists with community self-generation, how do you ensure that every kWh is recorded fairly?     As urbanization accelerates and residents' demand for energy management grows, the traditional single-source power supply model is no longer able to meet the diverse needs of modern communities. Especially in residential areas with self-generation capabilities (e.g. solar, wind, or small generators), there is a higher demand for technologies that can accurately differentiate and count the consumption of power from different sources. In this context, "dual-source smart metering" was born, which solves this problem and brings users a more transparent and efficient electricity consumption experience.   Application Case Sharing Taking a large residential area as an example, the introduction of dual source smart meters, not only realizes the fine management of electricity consumption for public area lighting, lifts, and other facilities but also provides a reliable smart metering tool for those families who have installed their photovoltaic power plants. What's more, in several unexpected power outages, thanks to the support of dual-source smart meters, the property owner was able to quickly activate the self-supplied power supply and reasonably charge the affected owners according to the actual usage situation, which not only ensured that the basic order of life would not be affected but also reflected fair and reasonable charging standards.   In conclusion, with the development of technology and social progress, innovative products like dual source smart meters are gradually becoming an integral part of building smart cities. They not only improve the quality of people's daily lives but also contribute to the promotion of sustainable development. In the future, we have reason to believe that more similar technologies and services will emerge, together creating a more convenient and environmentally friendly living environment.

The electricity smart meter, a key device for measuring electricity consumption, plays an integral role in modern society. It records the electricity used through a circuit, measured in kilowatt-hours (kWh), to help users understand and manage their electricity costs. While traditional mechanical smart meters rely on the speed of rotation of a dial to measure electricity consumption, modern smart smart meters integrate electronics and communications to promote energy efficiency by enabling automatic smart meter reading, remote monitoring, and support for advanced services such as time-of-day tariffs. In terms of installation location, the smart meter is usually located in an easily accessible yet safe place, such as inside a switchboard box. It is important to regularly check the operational status of electricity smart meters to ensure their accuracy and safety. For residents, understanding their smart meter readings can help cultivate the habit of saving electricity; for enterprises, it is an effective means to optimize energy management and reduce operating costs. With the development of science and technology, electricity smart meters continue to innovate, and a more environmentally friendly and efficient way of measuring electricity is gradually coming into our lives.

Some customers came to us and said they wanted prepaid water smart meters with SIM cards. However, after in-depth communication, we found that they mistakenly thought that prepaid water smart meters came with SIM cards. But the fact is that the basic technology used in prepaid water smart meters is STS (the Standard Transfer Specification), it is a secure message system for carrying information between a point-of-sale and a smart meter, and this information carrying process does not require the use of the Internet, instead, the water sales point encrypts the water sales information to generate a 20-digit key (TOKEN) and hands it to the user. The user then input the TOKEN via the keypad on the water smart meter to complete recharging the water smart meter. A SIM card is only needed when the water smart meter needs to use the remote smart meter reading function or remote management function.

In today’s fast-paced world, the demand for high-quality, reliable electric smart meters is ever-growing. Behind every well-functioning electric smart meter lies a detailed production process, involving precision, advanced equipment, and strict quality control. In this article, we take you inside an electric smart meter factory, revealing the steps and technologies that ensure each smart meter meets standards. · Material Storage: Protecting Core Components Our production begins with the careful storage of essential components. The most critical of these are the chips, which serve as the heart of the electric smart meter. These chips are stored in a temperature-controlled warehouse, shielded from any potential environmental damage. Maintaining the right temperature and humidity levels is crucial to ensure that these components function optimally throughout the production process. ·SMT (Surface Mount Technology) – Precision in Every Component Next, we move to the SMT (Surface Mount Technology) production area, a highly controlled environment designed to protect the delicate components from dust and contamination. Before entering the production line, workers pass through a dust removal room to maintain the cleanliness of the workspace. The factory operates two SMT production lines, which are composed of six key stages: Solder Paste Printer: Applies the solder paste to the PCB. Feeder: Supplies components to the mounting machines. High-Speed Mounting Machines: These machines automatically place components on the PCB with incredible precision. Multi-functional Mounting Machines: Capable of placing a wide variety of components. Reflow Oven: Melts the solder to securely attach the components to the PCB. AOI (Automatic Optical Inspection): After reflow soldering, the AOI machine inspects the board by comparing it with a reference PCB image, ensuring that all components are placed correctly and that no defects are present. The Panasonic lead-free machines used in these lines allow us to produce up to 5,000 single-phase smart meters or 3,000 three-phase smart meters per day, all with a quality pass rate of 100%.     ·DIP (Double In-line Package) – Insertion and Soldering The next step in the process is the DIP (Double In-line Package) operation, where components that cannot be mounted using the SMT process are inserted manually or using automated machines. We operate four insertion lines: Manual Component Insertion: For components that require hand placement. Wave Soldering: For components that can be soldered using the wave soldering method. This phase ensures that all the necessary components are securely attached to the PCB. ·Post-Soldering – Manual Soldering of Large Components Certain components, such as relays and LEDs, are too large to be handled by automated systems and require manual soldering. Our factory has four post-soldering lines.After the soldering is complete, each component undergoes a thorough inspection to ensure proper functionality. This ensures that every unit meets the required specifications before moving forward.

Diaphragm Gas Meters: Consist of an outer casing, movement (measuring chambers, distribution valves, diaphragms), and a counter. Diaphragm acts as a flexible partition, dividing the measuring chamber into two spaces. Gas entry causes diaphragm to swing, driving a linkage mechanism that alternates gas flow between chambers. Each diaphragm swing corresponds to a fixed volume of gas, measured by a counter. Smart Gas Meters: Enhanced diaphragm gas meters with electronic measurement, data processing, and communication modules. Sensors detect diaphragm movement and convert it into electrical signals for precise volume measurement. Memory chips store consumption data, transmittable to gas company systems for remote reading and monitoring. Conclusion: Both diaphragm and smart gas meters utilize the principle of diaphragm movement to measure gas volume, but smart meters offer advanced electronic measurement and data communication capabilities for improved accuracy and convenience.

With the advancement of smart smart metering technology, the energy sector has seen the rise of various prepaid smart meter systems. Among them, STS (Standard Transfer Specification) keypad prepaid smart meters and traditional IC card prepaid smart meters are two popular options. Although both offer prepaid electricity management, they differ significantly in terms of operation, maintenance, security, and user experience. 1. Operation Traditional IC card prepaid smart meters rely on physical IC cards for recharging and managing the smart meter. Users must insert the IC card into the smart meter to update their balance. Recharging usually requires going to a designated vendor to load credit onto the card. However, this method comes with inconveniences such as the risk of card loss, damage, or malfunctioning card readers at both the smart meter and vending points. In contrast, STS keypad prepaid smart meters eliminate the need for physical cards. Users can recharge their smart meters online via mobile money or other platforms, receiving a 20-digit code after payment. This code is then entered into the smart meter using a keypad. This system is more convenient and eliminates issues with lost or damaged cards. 2. Maintenance Costs Traditional IC card smart meters incur higher maintenance costs due to the need to replace lost or damaged cards and repair malfunctioning card readers. This can be a burden for both users and utilities. STS keypad prepaid smart meters, however, reduce these maintenance costs. Since there are no physical cards or card readers involved, there is less risk of damage or malfunction. Additionally, STS smart meters integrate easily with local mobile payment systems, enabling users to recharge via their phones, simplifying the process and reducing the need for physical infrastructure. 3. Security Security is a key concern for prepaid smart meters. Traditional IC card systems often use proprietary encryption methods, which may have security vulnerabilities, leaving them open to fraud and data breaches. STS prepaid smart meters, on the other hand, use globally recognized encryption standards (STS), providing higher security. This standard is widely accepted and ensures that data is securely transmitted, making STS smart meters a more secure choice for both utilities and users. 4. User Experience In terms of user experience, STS keypad prepaid smart meters are easier to use. Users can recharge their smart meters quickly via mobile money or USSD platforms, with no need for physical cards or visits to vending points. This results in a more streamlined, user-friendly experience. Traditional IC card smart meters, though functional, often involve more steps and inconveniences, such as card management and dealing with faulty card readers. Conclusion In summary, STS keypad prepaid smart meters offer significant advantages over traditional IC card smart meters in terms of convenience, maintenance, security, and user experience. With the growing adoption of smart smart metering, STS smart meters provide a secure, efficient, and user-friendly solution for managing prepaid electricity, making them a popular choice for both utilities and consumers.

·Pre-Assembly – Precision in Every Step The production flow of the electric smart meters is divided into multiple sections, each with tasks that are timed to the second. Workers are meticulously trained to perform each step with precision and efficiency. This level of organization ensures that the assembly line runs smoothly and that every smart meter is assembled to the highest standard. · Calibration and Adjustment – Ensuring Accuracy Once the smart meter components are assembled, they enter the calibration and adjustment phase. This step is vital to ensure that every smart meter meets international standards for accuracy and functionality. The calibration process is performed using automatic testing benches that simulate real-world conditions. Each smart meter undergoes a series of tests to verify that it operates correctly and that any minor adjustments are made to ensure the highest level of precision. ·Post-Assembly: Packaging and Final Inspection After passing through the calibration process, the smart meters are ready for their final stages of production. The products are first fully inspected by the Quality Control Manager. Once they meet all requirements, they are moved to the packaging stage, where they are carefully packed and engraved with their nameplates. To maintain consistent quality, random sampling is performed on every batch of 100 to 150 units. Six units from each batch are selected for additional testing. All processes adhere to both IEC (International Electrotechnical Commission) standards and local regulations, ensuring that the smart meters meet global quality benchmarks. · Final Storage Once the smart meters pass all quality checks, they are safely stored in the warehouse, ready for shipment. Proper storage is essential to prevent any damage before the product reaches the customer.   From the precise handling of sensitive chips to the meticulous assembly and rigorous testing processes, the production of electric smart meters requires careful attention to detail and the use of advanced equipment. By adhering to strict standards and maintaining high levels of quality control, our factory ensures that every smart meter that leaves the production line is reliable, accurate, and ready to perform for years to come.

Mode: Collaborative Manufacturing Approach Calinmeter specializes in designing meters based on utility specifications. Clients are responsible for assembling and producing the final meter. Workflow: Development and Design Phase: Calinmeter leads the development of the meter. Provides case and mold design services. Offers CKD (Completely Knocked Down) & SKD (Semi-Knocked Down) supply services. Quotation and Pricing: Calinmeter provides a quote for PCBA (Printed Circuit Board Assembly) and components. Prototype and Approval: Calinmeter constructs and tests prototypes. Client approval is obtained for the prototypes. Training and Production Support: Calinmeter offers training and guidance in testing, assembly, and production processes to ensure seamless integration and quality output. This model allows for a strategic division of labor, leveraging Calinmeter's expertise in design and development while enabling clients to focus on their strengths in assembly and production. The workflow is structured to ensure quality control, cost-effectiveness, and flexibility in meeting specific market demands.