Product Overview
The HWM Series Non-Magnetic IoT Smart Water Meter utilizes an advanced microprocessor to collect and record the volume of potable water flowing through water pipelines, while transmitting data to the water management platform via NB-IoT/4G for remote meter reading and billing management.
Product Features & Advantages
- Powerful Communication & Rapid Deployment::Based on carrier network infrastructure, the system provides stable, reliable, and secure data transmission. It features deep signal coverage, low power consumption, reliable communication performance, plug-and-play installation, fast network deployment, and two-way communication with the software platform.
- Proprietary Non-Magnetic Sensor Technology: Equipped with a self-developed non-contact electronic sensor utilizing non-magnetic signal detection technology to directly read impeller rotation signals. Flow calibration based on rotational speed significantly improves flow measurement accuracy and resolution.
- Strong Anti-Interference & Anti-Magnetic Capability: Advanced delayed sampling technology filters and analyzes sampled signals, effectively preventing errors caused by pipeline vibration and water hammer effects. The non-magnetic signal acquisition method resists interference from external magnetic materials and rust.
- Intelligent Reporting Mechanism: Supports periodic scheduled meter reading, active wake-up, and real-time water consumption reporting. Threshold-based reporting enables immediate alerts when preset limits are exceeded.
- Real-Time Monitoring & Alarm: Automatically generates alarms in the event of magnetic attacks, low voltage conditions, and other abnormalities.
- Ultra-Low Power Consumption Design: Utilizes high-density lithium-thionyl chloride (Li-SOCl₂) batteries combined with supercapacitor voltage stabilization technology, providing a battery life of more than 6 years.
- Waterproof & Durable Construction: Features IP68 protection with fully encapsulated imported soft epoxy sealing, ensuring stable operation even under wet or submerged conditions.
- Clear Display: High-resolution LCD screen clearly displays water consumption, battery status, signal strength, and other operating information.
- Flexible Recharge Methods: Equipped with IC card functionality, supporting both online recharge and IC card recharge methods, preventing recharge interruption caused by poor network connectivity or weak signals
Note:
- The technical specifications of this series comply with GB/T 778 and CJ/T 133 national standards.
- Hot water meter versions are available for this series.
Measurement specifications
| Nominal diameter (DN) |
Environmental rating |
Electromagnetic environment classification |
Accuracy class |
Temperature class (cold water meter) |
Maximum allowable pressure (MAP/PN) |
Pressure loss |
Maximum permissible error (MPE) |
Flow distortion sensitivity level |
Voltage |
||
| Low flow zone
(Q1≤Q<Q2) |
High flow zone (Q2≤Q≤Q4) | ||||||||||
| Water temperature
≤ 30℃ |
Nhiệt độ nước
> 30℃ |
||||||||||
| 15 | Class B | Class E1 | Class 2 | 0.1℃-30℃ | ≤1MPa | ≤0.063MPa | ±5% | ±2% | ±3% | U10/D5 | DC3.6V |
| 20 | Class B | Class E1 | Class 2 | 0.1℃-30℃ | ≤1MPa | ≤0.063MPa | ±5% | ±2% | ±3% | U10/D5 | DC3.6V |
| 25 | Class B | Class E1 | Class 2 | 0.1℃-30℃ | ≤1MPa | ≤0.063MPa | ±5% | ±2% | ±3% | U10/D5 | DC3.6V |
Flow rate specifications
| Nominal diameter (DN) | Range ratio (R) | Overload flow rate Q4 | Permanent flow rate Q3 | Transitional flow rate Q2 | Minimum flow rate Q1 | Minimum indication value | Maximum indication value |
| DN | Q3/Q1 | m3/h | m3 | ||||
| 15 | 80 | 3.1 | 2.5 | 0.050 | 0.031 | 0.0001 | 9,999.9999 |
| 15 | 100 | 3.1 | 2.5 | 0.040 | 0.025 | 0.0001 | 9,999.9999 |
| 20 | 80 | 5 | 4 | 0.080 | 0.050 | 0.0001 | 9,999.9999 |
| 20 | 100 | 5 | 4 | 0.064 | 0.040 | 0.0001 | 9,999.9999 |
| 25 | 80 | 7.9 | 6.3 | 0.126 | 0.079 | 0.0001 | 9,999.9999 |
| 25 | 100 | 7.9 | 6.3 | 0.101 | 0.063 | 0.0001 | 9,999.9999 |
