Ultrasonic Doppler Flow Meter for Open Channel Monitoring

Key Features

Real Time Multi Parameter Monitoring: Measures real time flow velocity, instantaneous flow rate, cumulative flow, water level and water temperature.
Bidirectional Flow Velocity Measurement: Supports velocity measurement in both flow directions, suitable for drainage networks, pipes and channels with variable flow conditions.
Wide Velocity Range: Measures flow velocity from 0.02 m/s to 5 m/s, supporting both low flow and high flow applications.
High Resolution Velocity Output: Provides 0.001 m/s velocity resolution for precise flow trend monitoring.
Water Level Measurement up to 10 m: Integrated level measurement range of 0–10 m, suitable for open channels, wells, pipes and sewer networks.
IP68 Waterproof Protection: The fully sealed sensor body is suitable for submerged installation and long term operation in wet environments.
RS485 Modbus Communication: Standard RS485 output with Modbus protocol enables easy connection to data loggers, RTUs, PLC systems and IoT monitoring platforms.
Low Power DC12V Operation: Operates on DC12V with average power consumption of about 75 mA, suitable for remote monitoring stations.
Durable ABS Housing: ABS enclosure provides good mechanical strength, corrosion resistance and stability for municipal, industrial and hydrological applications.
Remote Parameter Adjustment: Supports remote configuration and data reading when connected with a compatible host unit or monitoring platform.

Product Description

1. Description

JW-DL(LC52) Doppler Flow Meter is a compact IP68 flow monitoring sensor designed for real time velocity, water level, water temperature and flow rate measurement in sewers, drainage pipes, open channels, rivers, irrigation canals and municipal wastewater systems. With RS485 Modbus output, bidirectional velocity measurement and a rugged ABS housing, it supports long term water flow monitoring in harsh hydraulic environments.

2. Product Overview

JW-DL(LC52) Doppler Flow Meter is developed for continuous water flow measurement in complex hydraulic environments. It is based on ultrasonic Doppler measurement technology and can directly output flow velocity, water level, water temperature, instantaneous flow and cumulative flow data after installation in water.

The sensor is compact and easy to install in rivers, channels, drainage outlets, sewer pipelines, industrial discharge points and municipal wastewater systems. Its IP68 waterproof design allows the sensor to be installed in submerged or wet conditions, while RS485 Modbus communication makes it suitable for integration with smart water platforms, telemetry terminals and monitoring host units.

Parameter	Specification
Measurement Data	Real time velocity, instantaneous flow, water temperature, instantaneous flow rate, cumulative flow
Supply Voltage	DC12V
Power Consumption	Average 75 mA
Velocity Range	0.02–5 m/s bidirectional
Velocity Resolution	0.001 m/s
Velocity Accuracy	±1.0% ±1 cm/s
Water Level Range	0–10 m
Water Level Resolution	0.001 m
Water Level Accuracy	±0.1% FS
Temperature Range	-20°C to 65°C
Temperature Resolution	0.1°C
Temperature Accuracy	±0.5°C
Working Temperature	-20°C to 65°C
Storage Temperature	-40°C to 80°C
Protection Rating	IP68
Product Weight	280 g excluding cable
Product Size	180 × 50 × 29 mm
Output	RS485
Sampling Frequency	1 s
Communication Protocol	Modbus
Baud Rate	Default 9600 adjustable
Default Communication Address	0x01
Housing Material	ABS
Cable Length	10 m

3. System Topology

4. Application Scenarios

Sewer and Drainage Network Monitoring: The sensor can be installed in underground pipe networks, inspection wells and sewer pipelines to monitor water flow changes in real time. It is suitable for urban drainage management, rainwater runoff monitoring and wastewater discharge supervision.
Open Channel Flow Monitoring: For open channels, irrigation canals and concrete flumes, the Doppler flow meter can be installed on the bottom or side wall of the channel to monitor velocity, water level and flow rate.
River and Hydrology Monitoring: The product can be used in small rivers, natural channels and hydrological monitoring stations to support flow monitoring, flood warning and water resource management.
Municipal Wastewater Discharge: The device is suitable for municipal sewage outlets, industrial drainage channels and environmental discharge monitoring projects where continuous flow data is required.
Pump Station and Factory Flow Measurement: It can be connected to a host unit or monitoring platform for flow data acquisition in pumping stations, treatment facilities and factory drainage systems.

5. Installation Methods

FAQ

Q

1. What is a Doppler Flow Meter used for?

A

A Doppler Flow Meter is used to measure water velocity, water level, water temperature, instantaneous flow and cumulative flow in sewers, drainage pipes, rivers, open channels and wastewater systems.
Q

2. Can this flow meter be installed underwater?

A

Yes. The sensor has an IP68 waterproof rating, making it suitable for submerged installation in pipes, wells, channels and drainage systems.
Q

3. What communication output does the sensor support?

A

The sensor supports RS485 output with Modbus protocol, which allows integration with RTUs, data loggers, host units, PLC systems and IoT platforms.
Q

4. Can JW-IoT integrate this Doppler flow meter into a cloud monitoring platform?

A

Yes. JW-IoT can integrate the RS485 Modbus Doppler flow meter with gateways, telemetry units and cloud dashboards for smart water and drainage monitoring projects.
Q

5. What is the velocity measurement range?

A

The velocity measurement range is 0.02–5 m/s, and it supports bidirectional flow measurement.
Q

6. Does the sensor measure water level?

A

Yes. The sensor provides a water level measurement range of 0–10 m with 0.001 m resolution.
Q

7. Is this product suitable for sewer pipeline monitoring?

A

Yes. It is suitable for sewer pipelines, drainage networks, inspection wells and underground water flow monitoring applications.
Q

8. Can JW-IoT provide a complete drainage monitoring solution with this sensor?

A

Yes. JW-IoT can provide a complete solution including Doppler flow meters, data acquisition units, solar power, wireless transmission and cloud monitoring software.
Q

9. What power supply does the sensor require?

A

The sensor uses DC12V power supply and has an average power consumption of about 75 mA.
Q

10. Can the sensor work in muddy water or wastewater?

A

Yes. It is designed for complex water conditions such as muddy water, chemical wastewater, floating debris and drainage environments.
Q

12. Why choose JW-IoT for Doppler flow monitoring projects?

A

JW-IoT can support project level integration, including sensor selection, installation design, communication configuration, data platform connection and long term smart water monitoring deployment.