Single Engine, Dual Capability: Universal Inductive Metering Solution for Smart Water and Gas Meters
As global utilities accelerate the transition toward Advanced Metering Infrastructure (AMI), hardware design engineers face a persistent challenge: How to deliver continuous, high-precision, non-contact flow measurement while keeping static power consumption under strict energy budgets for a 15+ year operational lifespan?
Furthermore, with municipal markets deploying varied IoT communication topologies—from Wireless M-Bus (EN13757) across Europe to NB-IoT and LoRaWAN in broader global deployments—meter OEMs require versatile hardware solutions that do not require completely redesigning mechanical meter bodies or molds.
To address these core industry challenges, Hangzhou Weifeng introduces the WF8002 Inductive Metering Chip and V23050 Sensing Module Series—a universal, non-contact metering engine engineered specifically for both smart water meters and diaphragm smart gas meters.
Watch the WF8002 Inductive Sensing Architecture in Action
Check out our 22-second 3D animation showing how the WF8002 chip & V23050 module seamlessly integrate into standard residential/commercial gas and water meter registers (such as Gallus, Itron, and Diehl style mechanical indexes):
1. Universal Dual-Application Sensing Engine (Water & Gas Meters)
Unlike optical or Hall-effect sensors that require distinct mechanical setups or suffer from ambient light and magnetic interference, the WF8002 operates on the principle of LC inductive eddy-current detection:
- Smart Water Meters: Detects the rotation of a half-metallic pointer or target disk inside wet, dry, or liquid-sealed water meter counters with zero mechanical friction.
- Smart Diaphragm Gas Meters: Reads the metallic target mounted on the index wheel or diaphragm drive, converting physical volume displacement into high-reliability digital pulse signals.
- Mold-Free Retrofit: Supports stable sensing distances up to ≤ 10mm, allowing meter manufacturers to upgrade existing mechanical index housing without costly tooling or mold redesigns.
2. Uncompromising Power Efficiency (≤ 5uA Static Current)
Battery longevity is non-negotiable in smart water and gas metering. The WF8002 architecture offers optimized power modes tailored for different flow rate requirements:
Official Performance Specification Benchmark
| Parameter / Feature | V23050 Residential Module | V23050 Commercial Module | High-Speed Version | WF8002 Bare IC (Chip Level) |
|---|---|---|---|---|
| Static Current (TTL / OC) | ≤ 5uA | ≤ 11uA | ≤ 42uA | 3.2uA (Slow Sampling @ 3.6V, 64ms) |
| Dynamic Operating Current (TTL) | ≤ 7uA | ≤ 21uA | ≤ 110uA | 5.3uA (Fast Sampling) |
| Dynamic Operating Current (OC) | ≤ 15uA | ≤ 45uA | ≤ 130uA | 170uA (Filter Mode) |
| Max Detection Speed | 2.2 turns/sec | 10 turns/sec | 64 turns/sec | Adjustable via registers |
| Operating Voltage (VCC) | 3.0V ~ 3.6V | 3.0V ~ 3.6V | 3.0V ~ 3.6V | 2.5V ~ 5.5V |
| Sensing Distance | ≤ 10mm | ≤ 10mm | — | Depends on target coil size |
*(All test conditions based on DC 3.0~3.6V, ambient room temperature)*
3. 100% Anti-Magnetic Fraud Protection & Anti-Tamper Security
Magnetic theft remains one of the largest non-technical losses (NTL) for utility providers using traditional reed switches or Hall sensors.
- Complete Magnetic Immunity: Because inductive sensing measures high-frequency eddy current losses on conductive metals, magnetic fields from strong external neodymium magnets have zero effect on counting accuracy.
- Intelligent Tamper Detection: Embedded with proprietary anti-interference algorithms, the WF8002 detects both metal plate insertion tampering and module detachment/disassembly attempts, immediately triggering security alerts back to the AMI network.
- Bi-directional Flow Sensing: Accurately tracks both forward and reverse rotation to prevent backflow tampering or water hammer pulse miscounts.
4. Multi-Protocol Wireless & Hardware Integration
The WF8002 and V23050 modules output clean TTL pulse or Open Collector (OC) signals, making them universally compatible with major IoT communication transceivers and microcontrollers:
- Wireless Standards: Seamless interface with LoRaWAN, NB-IoT, Sigfox, Wireless M-Bus (EN13757 / CJ/T 188), and BLE 5.0 transceivers.
- Open-CPU & Protocol Support: Capable of integrating M-Bus CJ/T 188 standard protocols and supporting dense flow data storage (interval and periodic storage).
- Industrial Reliability: Features up to 8kV HBM ESD protection and a wide operating temperature range of -40℃ to +85℃ for the bare IC.
- Cost-Effective Potting Solution: No need for expensive, heavy epoxy encapsulation—combining nano-coating with PU potting delivers complete IP68 moisture protection while substantially lowering manufacturing costs.
Request Free EVB Evaluation Kits & Datasheets
Whether you are upgrading an established mechanical gas meter line or engineering next-generation smart water meters, Hangzhou Weifeng provides complete technical support, reference designs, and evaluation boards (EVB).
- 📄 Download Complete Datasheet: WF8002 Specification PDF
- 🧪 Request Free EVB Kit: Contact our engineering team at https://hangzhouweifeng.cn or email us directly to evaluate the WF8002 in your lab today!
