Product Overview
The HWM Series 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
- Stable and Reliable Communication: Based on carrier network infrastructure, the system provides stable, reliable, and secure data transmission with deep signal coverage, low power consumption, and dependable communication performance.
- Dynamic Self-Maintaining Network Technology: The system automatically performs periodic network self-maintenance, eliminating the need for manual adjustment or maintenance. It supports plug-and-play installation, rapid network deployment, and two-way communication with the software platform.
- Comprehensive Waterproof Design: The circuit board is fully encapsulated with imported soft epoxy resin, combined with waterproof batteries and an independent battery compartment design. This ensures excellent waterproof protection while maintaining convenient battery replacement. The complete unit meets the IP68 waterproof rating.
- 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 for magnetic tampering, low voltage conditions, and other abnormal events.
- Multiple Material Options: Available in cast iron, brass, or nylon materials to meet various application requirements.
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.
Metering Technical 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℃ |
Water temperature
> 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 | Q 3 /Q 1 | m 3 /h | m 3 | ||||
| 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 |
