Description Overview: The GAOTek Smart Ultrasonic Water Meter uses advanced ultrasonic transit-time technology for highly accurate flow measurement, capable of detecting flow as low as 0.01 m³/h, compliant with OIML R49/MID standards. It features micro-power technology with an 8 year battery life (ER26500, customizable to ER34615), compact size, strong anti-interference, and stable performance. It supports multi-angle installation without affecting accuracy or causing pressure loss. Ideal for residential use, it includes LoRa connectivity and can integrate with a wireless monitoring system via GSM or Ethernet for real-time data and abnormality alerts. Technical Specifications: DN15 DN20 DN25 DN32 DN40 Range & Capacity- R250 Q3 (Qmax/permanent) 2.500m3/h 4.000m3/h 6.300m3/h 10.00m3/h 16.00m3/h Q4 (Qoverload) 3.125m3/h 5.000m3/h 7.875m3/h 12.50m3/h 20.00m3/h Q2 (Qtransitional) 0.016m3/h 0.025m3/h 0.040m3/h 0.064m3/h 0.102m3/h Q1 (Qmin) 0.010m3/h 0.016m3/h 0.025m3/h 0.040m3/h 0.064m3/h Start Flow rate 0.002m3/h 0.002m3/h 0.003m3/h 0.005m3/h 0.005m3/h Dynamic Range R250 Range & Capacity- R400 Q3 (Qmax/permanent) 2.500m3/h 4.000m3/h 6.300m3/h 10.00m3/h 16.00m3/h Q4 (Qoverload) 3.125m3/h 5.000m3/h 7.875m3/h 12.50m3/h 20.00m3/h Q2 (Qtransitional) 0.010m3/h 0.016m3/h 0.025m3/h 0.040m3/h 0.064m3/h Q1 (Qmin) 0.006m3/h 0.010m3/h 0.016m3/h 0.025m3/h 0.040m3/h Start Flow rate 0.002m3/h 0.002m3/h 0.003m3/h 0.005m3/h 0.005m3/h Dynamic Range R400 Standard ISO4064: 2014 / OIML: R49-2013 Measured medium Water, homogeneous liquid, and filled with measured pipes. Battery 3.6V, Li-battery /ER34615 Battery Life ≥8 Years Consumption ＜0.2mW Pressure loss DN15-DN20: Δp40 DN25-DN40： Δp63 EMC E1 Environmental Classification Class B Protection Class IP68 Medium Temperature T30( Storage Temperature -25℃ to 55℃ MAP PN16 Accuracy ±5% in range Q1≤Q＜Q2 ±2% in range Q2≤Q≤Q4 Head Loss 0.4bar@Q3 Sensitivity of upstream flow field U10 Sensitivity of downstream flow field D5
