Wuxi, Jiangsu, China+86 181 1537 2079

Online Doppler flowmeter

Online Doppler flowmeter

  • Industrial stainless steel and industrial plastic materials, waterproof, anti-corrosion, strong and durable;
  • No loss parts, less maintenance, low cost of use;
  • High resolution, high measurement accuracy;
  • The sensor has a service life of more than 5 years;
  • Not afraid of interference from chemical reagents, liquid viscosity and other factors;
  • Touch screen operation, English menu;
  • 4~20mA isolated current output;
  • Isolated Modbus RS485 and RS232 communication interface;
  • Upper and lower limit alarm and timing function relay output;

Product Overview:

Acoustic Doppler ultrasonic flowmeter is a flow velocity and flow detector used in rivers, open channels and pipelines. It uses ultrasonic detection technology, has high measurement accuracy, high stability, is less affected by environmental factors, has no rotating parts, low maintenance frequency, and high working reliability. It is the preferred product for online measurement and portable measurement.

Principle: Doppler effect, the frequency difference between transmission and reception is related to the flow velocity, the time difference between ultrasonic transmission and reception is related to the liquid level, the static pressure liquid level is used for special working conditions, and the ambient temperature measurement is used to correct the actual propagation speed of the ultrasonic wave.

Application:

River and open channel monitoring: Online Doppler flowmeter can be used to monitor water flow velocity and flow in natural rivers and open channels, helping water conservancy departments know the water resource conditions and conduct water resource management.

Urban drainage network: Doppler flowmeters are often installed in urban drainage networks, such as under sewage manhole covers, and fixed to drainage pipes through brackets. Real-time monitoring of drainage pipe flow ensures the normal operation of the drainage system.

Chemical production: In the chemical production process, the flow of various liquids or gases needs to be accurately measured and controlled. The high accuracy and fast response characteristics of Doppler flowmeters make them an ideal choice for chemical production.

Product Parameter:

Transmitter:

Dimension231×185×119mm
Weight1.3kg
Storage temperature-40℃~60℃
Ambient temperature-20℃~ 60 °C Avoid direct sunlight
Relative humidity5%~85%(No condensation)
Protection levelIP65
Power supply220VAC±10%,50Hz
Analog output4~20mA output (dissolved oxygen value or saturation, 20mA can be set to measure), loop load up to 750Ω; optional temperature 4~20mA output
Relay output2 relays, capacity 220 VAC / 5 A, outputs can be set as alarm or timing functions
On-site display5-inch touch screen with backlight

 

On-site displayRS232 and RS485 interfaces, Modbus protocol

 

Sensor:

Dimension

 

164×50×29.5mm
Flow velocity indexRange -10m/s~10m/s; Resolution 0.001m/s; Repeatability ≤0.002m/s
Flow velocity accuracy1% FS
Ultrasonic level indexRange 0~6.5m; Resolution 1mm; Accuracy +-1mm
Pressure level index

 

Range 0~10m; Resolution 1mm; Accuracy ±0.25% FS

 

TemperatureRange -20℃~60℃; Accuracy 0.5℃
Response timeLess than 30 seconds
Temperature sensorWorking range: 0~60°C; Resolution: 0.01°C

Accuracy: ±0.5°C; Response time: less than 30 seconds

Storage temperature-20℃~60°C
Ambient temperature-20°C ~60°C
Medium temperature0℃~50℃
Maximum installation depth10 m
Chemical compatibilityMethanol and ethanol are safe, avoid other organic solvents
CalibrationIt has been calibrated at the factory and generally does not need to be calibrated again.
Sensor housingPlastic and stainless steel
Weight<1kg
Sensor cableStandard 10 meters