Woltmann Water Meter LMLC

Woltmann Water Meter LMLC

The LMLC is a heavy-duty Woltmann water meter designed for high-volume flow with minimal pressure loss. Its removable measuring insert allows easy maintenance and calibration without removing the meter body.

  • Removable mechanism for easy servicing

  • Low pressure loss for high-flow applications

  • IP68 copper/glass register – durable and sealed

  • 350° rotatable head for convenient reading

  • Magnetic tamper protection

  • Optional pulse/encoder output for smart upgrades

  • ISO 4064 compliant for trusted accuracy

FEATURES

Measurement Requirements

  • Temperature Class: Cold water meter: T30    Hot water meter: T30/90

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

  • Pressure Loss Class: ΔP25

  • 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  40   40 63 100 160 250
R standard* Q3/Q1  R 80 80
 80
 80 80 80
Minimum flow rate* Q1 m³/h 0.5 0.5 0.8 1.3 2 3.1
Transition flow rate* Q2 m³/h 0.8 0.8 1.3 2 3.2 5
Maximum flow rate Q4 m³/h 50 50 78.8 125 200 312.5