Compound Water Meter LMLF

Compound Water Meter LMLF

Designed for residential and commercial networks with variable water demand, the LMLF offers accurate metering across both high and low flow rates. This compound water meter integrates a main meter and a bypass meter, ensuring precise measurement even during low consumption periods. Ideal for installations requiring consistent performance across diverse flow conditions.

  • Dual-chamber design – combines high-flow and low-flow measurement

  • Modular register – easy maintenance and AMR/AMI upgrade-ready

  • Low pressure loss – optimized for large-scale networks

  • Fully compliant with ISO 4064 metrology standards

  • Durable brass body – corrosion-resistant and built to last

FEATURES

Measurement Requirements

  • Temperature Class: T30

  • Pressure Rating (MAP): MAP16 (up to 16 bar)

  • Pressure Loss Class: ΔP63

  • Flow Sensitivity (Upstream): U10

  • Flow Sensitivity (Downstream): D5

Maximum Permissible Error

  • Low Flow Region (Q₁ ≤ Q < Q₂): ±5%

  • High Flow Region (Q₂ ≤ Q ≤ Q₄):

    • ±2% when water temperature ≤ 30°C

    • ±3% when water temperature > 30°C

METROLOGICAL DATA

Nominal diameter DN      mm      50      65      80     100     125     150     
Length* L mm 200 200  225 250 250 300
Nominal flow rate Q3 m³/h  25   40 63 100 160 250
R standard* Q3/Q1  R 800 800
 1250
 1250 1250 1250
Minimum flow rate* Q1 m³/h 0.03 0.5 0.05 0.08 0.125 0.2
Transition flow rate* Q2 m³/h 0.05 0.8 0.08 0.13 0.2 0.32
Maximum flow rate Q4 m³/h 31.3 50 78.8 125 200 312.5