LoRa Valve-Controlled Water Meter

LoRa Valve-Controlled Water Meter

Overview

The electronic remote-transmission valve-controlled water meter is a mechatronic high-tech product. It adopts advanced wireless transmission technology and uses a microelectronic control circuit to convert and store the metering information of traditional mechanical water meters into electrical signals. Metering data can be automatically collected via a wireless remote network, or collected by a wireless meter reading device and then transmitted to the backend system.

Product Features

  • Easy Deployment: No wiring required; simple installation and commissioning.
  • Low Implementation Cost: No wiring cost; uses license-free frequency bands with stable signals and convenient meter reading.
  • Long Reading Distance: Adopts multi-node spread spectrum technology and multi-level relay routing, enabling a large meter reading radius.
  • Battery Service Life: Low-power design with real-time standby; battery service life ≥ 8 years.
  • Remote Transmission & Control: Built-in valve, supporting remote data transmission and remote valve control.

 Main Technical Parameters

 Flow Range

Meter Code Nominal Diameter DN (mm) Metering Characteristic Overload Flow Q4 (m³/h) Rated Flow Q3 (m³/h) Transitional Flow Q2 (m³/h) Minimum Flow Q1 (m³/h)
15 R80 3.125 2.5 0.05 0.031
20 R80 5.0 4.0 0.08 0.05
25 R80 7.875 6.3 0.126 0.079

 Wireless Technical Indicators

Parameter Specification
Power Supply 2.1V-3.6V
Operating Frequency 488-510MHz
Transmission Power 50mW
Receiver Sensitivity -132dBm
Sleep Current 2.5μA
Average Current 18μA
Transmission Distance 1500m (5Kbps, open-area line-of-sight distance)
Routing Levels 8 levels
Operating Temperature -20℃-70℃

Relative Error

  • 1 For the low flow range (from minimum flow Q1, inclusive, to transitional flow Q2, exclusive), the maximum allowable error is ±5%.
  • 2 For the high flow range (from transitional flow Q2, inclusive, to overload flow Q4, inclusive):
    • Maximum allowable error is ±2% when water temperature ≤ 30℃;
    • Maximum allowable error is ±3% when water temperature > 30℃.

Other Parameters

  • Operating Temperature:
    • Cold water meter: (0.1~30)℃
    • Hot water meter: (0.1~90)℃
  • Working Pressure: ≤1.0MPa
  • Pressure Loss: ≤0.063MPa
  • Installation Environment: Class B – Fixed IC card water meter installed indoors
  • Electromagnetic Environment: E1 – Residential, commercial, and light industrial areas
  • Operating Current: Static current < 19μA
  • Flow Profile Sensitivity Class: U10, D5

 Dimensional Drawing

Diameter (mm) Length L (mm) Length L1 (mm) Width B (mm) Height H1 (mm) Height H2 (mm) Height H3 (mm) Connecting Thread d Connecting Thread D
15 258 165 90 120 200 165 R1/2 G3/4
20 299 195 90 120 200 165 R3/4 G1
25 345 225 90 120 200 165 R1 G1 1/4