Watch the video above to see how the WF8002 metering chip is engineered for reliable performance in harsh European environments.
In the European smart metering market, devices must withstand extreme temperatures, high humidity, condensation, and electromagnetic interference. The WF8002 metering chip is specifically designed to meet these challenges while maintaining EN13757 and wM-Bus compliance.
To meet these stringent requirements, Hangzhou Weifeng developed the WF8002 Metering Chip, an ultra-low-power sensing solution based on an Inductive Bridge Architecture. By combining contactless sensing technology with precision manufacturing processes, WF8002 significantly reduces mechanical wear, environmental interference, and long-term maintenance risks for both water and gas metering applications.
Traditional remote meter reading solutions typically rely on either magnetic pulse sensors or optical sensing modules. While widely used, both technologies have limitations under demanding field conditions.
Optical sensing systems may experience signal degradation caused by condensation inside water meter compartments. In gas metering applications, dust accumulation and environmental contaminants can also reduce optical transparency over time, increasing the risk of missed pulses.
Conventional magnetic sensing depends on a stable external magnetic field. Strong external magnets can disturb the magnetic field distribution, making these systems more vulnerable to magnetic tampering—an important concern for revenue protection in utility networks.
The WF8002 adopts a contactless Inductive Bridge Architecture, providing highly stable differential inductive sensing for both smart water meters and diaphragm gas meters.
Its operating principle includes:
Unlike magnetic sensing, the WF8002 detects high-frequency inductance variations rather than static magnetic fields, providing excellent immunity against common magnetic interference.
Meanwhile, the chip maintains ultra-low static current consumption of less than 6 μA, making it ideal for long-life battery-powered smart metering systems.
Key Benefits
Beyond accurate metering, the WF8002 provides advanced tamper detection capabilities.
During initialization, the sensing module establishes an electromagnetic baseline profile based on:
If any abnormal condition alters this electromagnetic signature, the WF8002 immediately detects the change.
Typical tampering scenarios include:
These events change the inductance characteristics beyond the predefined threshold.
Once detected, the WF8002 generates an immediate hardware interrupt. Connected communication modules—including NB-IoT, LoRaWAN, or Wireless M-Bus (EN13757)—can prioritize transmission of tamper alarm messages during the next reporting cycle.
This enables utilities to rapidly identify unauthorized access attempts and helps reduce non-revenue water (NRW) and gas theft.
European water meters are frequently installed in underground meter pits where long-term condensation and temporary flooding are common.
Gas meters, although typically installed outdoors or within wall-mounted cabinets, must also withstand high humidity and repeated thermal cycling.
Achieving IP68 protection is therefore essential for long-term operational reliability.
To ensure consistent sealing quality, Hangzhou Weifeng utilizes a fully automated dual-component precision dispensing system throughout production.
Compared with manual potting, automated dispensing ensures consistent mixing and degassing of epoxy or silicone compounds, minimizing internal voids and eliminating moisture penetration paths.
Selected encapsulation materials are carefully matched to PCB assemblies and ABS/PC housings.
Following extensive thermal cycling tests from −20°C to +60°C, the encapsulation maintains structural integrity without cracking or delamination, ensuring long-term waterproof performance.
Hangzhou Weifeng provides highly reliable chip-level and module-level metering solutions for global smart utility manufacturers.
Our manufacturing processes comply with:
With over 40 million successful deployments worldwide, our solutions help smart meter manufacturers, system integrators, and utility companies build highly reliable next-generation smart water and gas metering systems.
As European smart utility infrastructure continues to evolve, metering solutions must deliver far more than measurement accuracy—they must provide long-term reliability, environmental resilience, and strong protection against tampering.
The WF8002 Metering Chip combines advanced inductive sensing, ultra-low power consumption, intelligent tamper detection, and precision manufacturing to help manufacturers develop smart water and gas meters that meet the demanding requirements of European utility projects.
Whether you are designing next-generation smart water meters, smart gas meters, or Wireless M-Bus metering solutions, the WF8002 offers a reliable and future-ready platform.
Hangzhou Weifeng Intelligent Technology Co., Ltd.
Contact: Jing Yapeng (Export Manager)
Tel / WhatsApp / WeChat: +86 136 1650 5123
Email: Jing@hangzhouweifeng.cn
Website: www.hangzhouweifeng.cn
Product line: Inductive metering sensors — WF8002-based, non-magnetic, anti-magnetic/RF interference, RoHS 2.0, samples and datasheets available.
