1Multi channel ultrasonic open channel flowmeterapplication
Multi channel ultrasonic open channel flowmeterIt is an instrument used to measure the liquid flow rate of non-standard culverts, channels, and openings. It can be widely used for flow measurement in sewage treatment inflow and discharge channels, chemical liquids in industrial and mining enterprises, wastewater discharge channels, water conservancy engineering and agricultural irrigation channels, flood discharge gates and other occasions.
IIMulti channel ultrasonic open channel flowmetercharacteristic
There are no special requirements for the cross-sectional shape and size of the channel.
When the cross-section of the channel is large, multi-channel speed measurement is used to achieve high-precision measurement.
No flow obstruction, no head loss.
Can measure flow and velocity in both forward and reverse directions.
Can be used as a calibration device for open channel flow meters in the form of channel weirs or other methods.
The host and probe types are diverse and can be used in combination according to on-site needs.
The independent intelligent measurement module for each channel ensures fast, accurate, and stable measurement.
Supports input methods such as AC 220V, DC12-36V, and solar power supply.
Supports RS485 communication, making integration with remote data management systems more convenient.
IIIMain technical indicators and parameters

host	index	sensor	index
The data shows that:	19264 LCD screen display, keyboard input	Measurement principle:	Continuous measurement using time difference method
Power supply:	AC220V、DC12-36V	Measure the vocal tract:	Multi channel (optional)
Whole machine power consumption:	<20W	adaptability:	Measurable wastewater containing solid substances
Display content:	Flow rate, cumulative flow rate, flow velocity, liquid level, signal, etc	Measurement accuracy:	5%
Output signal:	RS485	Flow rate range:	0.01m/s---30m/s
Environmental temperature:	-20—70℃	Measure channel width:	Time difference method 0.5-15 meters
Working temperature:	-20—70℃	Environmental temperature:	-20—70℃
Relative humidity:	10—90%	Working temperature:	-20—70℃
Installation method:	Wall Mount	Medium temperature:	-20—80℃
Distance between host and sensor:	≤ 200 meters	Protection level:	IP68
Protection level:	IP65

4、 Working principle of multi-channel open channel ultrasonic flowmeter
Using the principle of time difference ultrasonic measurement (the velocity difference caused by the propagation of ultrasonic waves in the direction of liquid flow and the opposite direction), a two-layer velocity measurement layer is distributed on the flow measurement section. Ultrasonic water level gauges are installed on the channel to measure the water level, calculate the cross-sectional area of the water passage, and calculate the flow rate of the water passage section based on the hydraulic model.
The acoustic ultrasonic flowmeter measures the actual flow velocity of each layer in the channel through two sets of sensors (as shown in the figure below), simulates the distribution of actual operating flow velocity, and solves the accuracy of converting linear velocity V into surface velocity Ѷ to improve the overall measurement accuracy of the instrument

5、 Application site legend

6、 Data collection platform

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