Basic Parameters
Communication Method | M-bus | 485 | NB-IOT | LoRa |
Transmission Distance | 1000m(normal) | 200m(normal) | Within the base station coverage area |
Battery Life | ≥7 y | ≥7 y | ≥7 y | ≥7 y |
IP Rating | IP68 | IP68 | IP68 | IP68 |
Pressure Rating | MAP16 | MAP16 | MAP16 | MAP16 |
Pressure Loss Rating | △p25、△p40、△p63 | △p25、△p40、△p63 | △p25、△p40、△p63 | △p25、△p40、△p63 |
Temperature Class | T30、T50 | T30、T50 | T30、T50 | T30、T50 |
Flow Profile Sensitivity Class | U0/D0、U5/D3、U10/D5 | U0/D0、U5/D3、U10/D5 | U0/D0、U5/D3、U10/D5 | U0/D0、U5/D3、U10/D5 |
Environmental Safety Class | O | O | O | O |
EMC Class | E2 | E2 | E2 | E2 |
Accuracy Class | 2 | 2 | 2 | 2 |
Range ratio R | 400、315、250（default）、200、160 |
Pipe Material | copper, stainless steel, plastic |
Display Content | Cumulative flow (m³), water temperature (℃) displayed in rotation |
Display Resolution | Cumulative Flow (0.001m³), Verification Cumulative (0.001L), Temperature (0.01℃), Pressure (1kPa) |
Data Storage | Using ferroelectric technology, it stores accumulated traffic monthly, automatically stores the most recent 12 months of data, and maintains cumulative data for nearly 5 years. |
Power Supply & Consumption | Battery powered (DC 3.6V), replaceable, non-rechargeable, 0.25mW |
Pressure Sensor | Optional, Measuring Range: 0~1.6MPa， ±1%FS |
Flow Parameters
Nominal Diameter （DN） | Permanent Flow Rate Q3 | Range Ratio Q3/Q1 | Overload Flow Rate Q4 | Permanent Flow Rate Q3 | Transitional Flow Rate Q2 | Minimum Flow Rate Q1 | Minimum Reading Min |
（mm） | (m3/h) |
| (m3/h) | (L/h) | m3 |
15 | 250 | 3.125 | 2.500 | 16.000 | 10.000 | 0.001 (default) 0.00001 (Optional) | 999999.999 (default) 99999.99999 (Optional) |
20 | 5.000 | 4.000 | 25.600 | 16.000 |
25 | 7.875 | 6.300 | 40.320 | 25.200 | 0.001 (default) | 99999999.999 (default) |
32 | 12.500 | 10.000 | 64.000 | 40.000 |
40 | 20.000 | 16.000 | 102.400 | 64.000 |
Note: The actual material is subject to the silk-screen marking.
Maximum Permissible Errors:
a) Within the working temperature range of 0.1℃≤Tw≤50℃, the maximum permissible error is ±5% in the lower zone (from the minimum flow rate Q1 inclusive to the transitional flow rate Q2 exclusive).
b) Within the working temperature range of 0.1℃≤Tw≤30℃, the maximum permissible error is ±2% in the higher zone (from the transitional flow rate Q2 inclusive to the overload flow rate Q4 inclusive).
c) Within the working temperature range of 30℃≤Tw≤50℃, the maximum permissible error is ±3% in the higher zone (from Q2 inclusive to Q4 inclusive).
