Electromagnetic Water Meter

Electromagnetic water meter designed for high-accuracy flow measurement in municipal, industrial and infrastructure water systems. Based on Faraday’s Law of Electromagnetic Induction, it measures flow by detecting the voltage generated as conductive fluid passes through a magnetic field.

The induced electromotive force is proportional to the flow velocity, enabling precise and stable measurement independent of pressure, temperature or fluid density variations.

Through an integrated electronic control system, the signal is converted into flow rate and totalized consumption data, supporting accurate monitoring in demanding operating environments.

Designed for long-term reliability, the solution is suitable for applications requiring high precision, low maintenance and stable performance in large-scale water supply and distribution systems.

Product Features

Accurate Measurement: Adopts electromagnetic induction principle for measurement, with small error and low starting flow. It is not affected by water quality and has strong anti-interference ability.

Network Adaptation: When the signal at the water meter installation site is poor, the electromagnetic water meter can automatically hop frequencies and select other frequency points with strong signals for connection attempts, improving communication success rate.

High Turndown Ratio: This product offers multiple turndown ratio options, with the highest reaching 630—far exceeding that of mechanical water meters.

Super Waterproof: The circuit part adopts multiple waterproof treatments to ensure excellent waterproof performance.

4G IoT: The water meter has a built-in 4G module and SIM card, and uses IoT wireless communication with UDP point-to-point communication mode. Data transmission is completed through the interaction of telecom operator base stations, without the need for additional intermediate collection equipment. Water consumption and water meter status are reported regularly or in real-time, with a one-time automatic meter reading success rate of over 99%.

Periodic Self-Reporting: The meter terminal reports data regularly. The factory default is to report data to the smart water system actively once every 24 hours (1~120 hours can be set).

Automatic Reissue: If the data upload of the water meter is interrupted unexpectedly, the water meter will automatically reissue the data, and the reissue strategy can be set.

Performance Parameters

Electromagnetic Environment GradeE2Environment GradeClass 0
Water Temperature RangeT50Pressure Grade1.6MPa
Accuracy GradeClass 2Waterproof Protection GradeIP68
Flow Field Sensitivity GradeU0D0Installation MethodAny Angle

Flow Parameters

To ensure the accuracy of flow measurement, the flow performance technical indicators adopted by the water meter all comply with the requirements of GB/T 7781.1~5-2018.

Nominal Diameter DN (mm)R ValueOverload Flow Q₄ (m³/h)Common Flow Q₃ (m³/h)Transitional Flow Q₂ (m³/h)Minimum Flow Q₁ (m³/h)Minimum Reading Min(m³)Maximum ReadingMax(m³)
40630,500,400,315,250,200,16031.25251.6Q₁Q₃/R0.0001999999.9999Or99999999.99
5050401.6Q₁Q₃/R0.0001
8078.75631.6Q₁Q₃/R0.0001
1001251001.6Q₁Q₃/R0.0001
150312.52501.6Q₁Q₃/R0.0001
2005004001.6Q₁Q₃/R0.0001
250787.56301.6Q₁Q₃/R0.0001
300125010001.6Q₁Q₃/R0.0001

Main Technical Parameters

Accuracy ClassClass 2Communication ModeNB-IoT/4G Cat.1
Temperature ClassT50Reverse FlowMeasurable
Maximum Allowable Pressure1.6MPaEnvironmental ClassClass O
Pressure Loss Class△p10Electromagnetic Environmental ClassE2
Installation MethodH/V↑Power Supply3.6V Lithium Thionyl Chloride Battery, Operating Range: 3.0V~3.6V
Upstream Flow Sensitivity ClassU0LinerNatural Rubber
Downstream Flow Sensitivity ClassD0HousingStainless Steel
Protection ClassIP68