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TECHNICAL SPECIFICATION – DN50 WATER METER

ParameterSpecification
Nominal Diameter (DN)50 mm
Meter TypeUltrasonic
Measuring PrincipleTransit-time difference of ultrasonic signals
Accuracy ClassClass 2
Nominal Flow Rate (Q₃)10.0 m³/h
Overload Flow Rate (Q₄)12.5 m³/h
Transitional Flow Rate (Q₂)0.4 m³/h
Minimum Flow Rate (Q₁)0.25 m³/h
R Ratio (Q₃/Q₁)R40
Maximum Permissible Error (MPE)±2% (Q₂ ≤ Q ≤ Q₄), ±5% (Q₁ ≤ Q < Q₂)
Pressure ClassMAP16
Maximum Operating Pressure1.6 MPa (16 bar)
Pressure Loss ClassΔP63
Temperature ClassT50 (up to 50°C)
Maximum Permissible Temperature50°C
Nominal Pressure Loss at Q₃≤ 0.063 MPa (63 kPa)
Nominal Pipe ConnectionFlanged Ends – PN16
Mounting OrientationHorizontal (H)
Direction of FlowForward (arrow marked on body)
Flow Profile SensitivityU₀/D₀ = 0 / 0 (not affected by upstream/downstream disturbances)
Recommended Upstream Straight Length15D
Recommended Downstream Straight Length15D
Verification Scale Interval (VSI)0.01 Litre
Meter Body MaterialABS
Liner MaterialEpoxy or Composite Polymer
Transducer HousingEncapsulated Ultrasonic Sensor Pair
Display Unit PositionTop of Meter
Ingress ProtectionIP68
Ambient Temperature Range5°C to 55°C
Storage Temperature Range-25°C to +70°C
Reference StandardsISO 4064-1:2014, ISO 4064-2:2014
Typical ApplicationBulk water metering for commercial and industrial distribution systems