NB Internet of Things ultrasonic large diameter water meter

The flow measurement of the ultrasonic water meter adopts the principle of ultrasonic time difference method

² Ultrasonic multi-channel design, DN50-200 for four channels, DN200 above six channels

² Higher measurement accuracy and wider measurement range

The requirements for the front and rear straight pipe sections are also reduced, which can better adapt to the installation environment requirements on site

² Wired (RS485/MBUS), wireless (NB-Iot/LoRa) remote data interface is optional

  ² Covering diameter DN (50 ~ 300) mm

Technical features:

² Professional integrated circuit design using self-designed time difference method and phase difference method, not only improves the integration of the circuit, but also improves the accuracy and stability of the measurement.

² Drip metering, small initial flow, wide range ratio (1:250); (range ratio ≤250 first-level table standard range ratio > 250 or more second-level table standard), the measurement has not been measured into the measurement, reducing the loss of the water supply company.

The ² program combines temperature correction of sound velocity with multi-stage correction to improve linear consistency of flow measurement.

² Optimize first wave detection with transducer characteristics to improve measurement stability and consistency.

² Professional pipeline flow field design to ensure the stability of the fluid remeasurement pipeline.

² Straight pipe section, minimal pressure loss, measuring sensor does not contain any mechanical moving parts, no wear, long product life, low cost of use.

² Real-time monitoring of water status, once water leakage and pipe explosion occurs, immediately alarm.

² Large capacity data storage, recording equipment operation information and 3 years 1095 days of daily frozen data, including the daily maximum instantaneous flow, minimum instantaneous flow and alarm information, can provide a basis for disputes arising in the use of water meters.

² Two-way metering, positive and negative water flow can be measured, reducing water supply metering disputes.

Performance parameters:

² Ambient temperature: 0 ~ 50℃

² Fluid water temperature: 0+℃ ~ 30℃ (T50/T70 optional)

² Working water pressure: ≤1.6M Pa (MAP25, MAP16, MAP10 optional)

² Installation environment: Class C

² Electromagnetic environment: E1

² Sensitivity level: U5,D3

² Electronic circuit: working voltage 3.6V, silent current ≤20μA(LCD open)

² Measurement frequency: 1 time/second

² Protection level: IP68

² Pressure module: Optional 1M Pa/1 level

² Implementation standard: GB/T 778-2018 "Drinking cold water meter and hot water meter";

² ISO 4064-1~3:2014 Water meters for cold potable water and hot water

Measurement parameters:

² Range ratio Optional: Q2/Q1=1.6 (250, 200, 160, 100)

² Precision level: Level 1