RS-485/M-bus Valve-controlled Wired Water Meter

Six-character wheel	Four-character wheel

 Functional Features

1. This series of remote-transmission water meters adopts a dry-type structure.
2. Easy reading, with clear display maintained for a long time.
3. Equipped with photoelectric encoding passive direct-reading technology.
4. Water usage can be controlled via the valve.

 Technical Parameters

• Product Model: LXS-15～25 FK
• Operating Voltage: DC 36V
• Operating Current:
  • Meter reading current: ≤9.0mA
  • Static current: ≤1.3mA
  • Bus current for valve opening/closing: ≤50mA
  • Motor valve input current for valve opening/closing: ≤30mA
• Operating Environment:
  • Water temperature: 0.1℃～+45℃
  • Humidity: 0～95% RH
• Storage Temperature: -25℃～+65℃
• Temperature Class: T50 (cold water), T90 (hot water)
• Maximum Allowable Water Pressure: 1 MPa
• Maximum Pressure Loss: 0.063 MPa
• Valve Type: Motor valve
• Communication with Host Computer: M-bus field bus
• Communication Baud Rate: 2400 baud
• Communication Protocol: DL/T645, CJ/T 188, internal protocol (or user-specified protocol)
• Maximum Communication Distance: 300m (using communication cable AVVR2×0.75)
• Single Meter Valve Opening/Closing Time: 8 seconds
• ESD Protection for Bus Pins: Over 10kV
• Protection Functions: Short-circuit current protection; protection against bus faults (open circuit, short circuit, idle state, etc.)

Flow Parameters

• Maximum Allowable Error:
  • Low flow range (including minimum flow Q1, excluding transitional flow Q2): ±5%
  • High flow range (including transitional flow Q2, including maximum flow Q4): ±2%

Dimension