Ultrasonic STS prepaid plastic Water Meter
Daweda DDW-MF01 Ultrasonic STS prepaid plastic Water Meter works in both prepaid and postpaid mode, providing stable and reliable measurement function. Communication modules can beRS485, RF,GPRS NB-IoT or other wired/wireless modules. Widely used in suitable on-site environments such as residential areas, apartments, school dormitories, government agencies, public buildings, etc.
Description
Main technical parameters
| Accumulated volume resolution | 0.001m³ (when in use) 0.00001m³ (when calibrating) |
| Current flow resolution | 0.001m³/h (when in use) 0.001m³/h (when calibrating) |
| Static operating current | ≤6uA |
| Battery service life | > ( 6 + 1 ) years |
| LCD display digits | 8 digits |
| Temperature class | T30 |
| Pressure class | MAP16 |
| Pressure loss | △p25 |
| Environmental severity class | C |
| Protection level | IP68 |
| Accuracy level | 2 |
| Electromagnetic environment | E1 |
| Installation method | Horizontal or vertical |
| Upstream/downstream flow field Sensitivity level | U5/D3 |
| Customizable special functions | Identification and alarm for pipeline leakage, burst, and scaling |
| Caliber range | DN15～DN25 |
| Range ratio
Q₃/Q₁ |
125、160、200、250、400 |
| Q₃ | DN15:2.5m³/h DN20:4.0 m³/h DN25:6.3 m³/h |
Key Features
- 1. High range ratio (up to 400:1)
- 2. Self-diagnostic function: flow sensor fault alarm, temperature sensor fault alarm, measurement overrange alarm, battery undervoltage alarm
- 3. Intelligent data error correction technology, with high measurement accuracy and stability
- 4. The built-in lithium battery ensures a usage of (6+1) years or more
- 5. Equipped with a photoelectric interface, it supports on-site reading by handheld infrared meter reading tools
- 6. Optional wired communication interfaces (M-BUS, 485) or wireless communication interface (LoRa)
- 7. An optional built-in IoT communication module (GPRS or NB-IoT) can be equipped to form an IoT meter
- 8. Optional power supply modes:
- 1) Powered by built-in battery (default configuration)
- 2) External power supply (used in 485 configuration, voltage range: DC (7.5~24)V) (to be specified when ordering)
