The box type open channel measurement system uses the measurement principle of velocity area method as the basic measurement method, and is composed of box type electromagnetic velocity sensor, liquid level sensor and intelligent converter. Its working principle is to calculate the section area through the real-time water level measured by the box type electromagnetic velocity sensor, and the channel flow can be obtained by multiplying the average section velocity by the section area.Liquid level gauges with different principles and forms can be used to measure the water level of the section. Liquid level gauges generally include ultrasonic liquid level gauge, pressure liquid level gauge, etc.

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Functional features:

(1) The measurement system can measure real-time water level, average velocity and cumulative flow

(2) With reasonable mathematical model and advanced process technology, multi pair electrode automatic tracking measurement can accurately measure the average flow velocity of different sections

(3) Wide measurement range (0.01-10m / s)

(4) Bidirectional flow measurement

(5) The measurement is not affected by floating objects, sediment content, water level change and temperature in the water

(6) The flow rate sensor is easy to install and has no resistance to water flow.The standard section can be installed directly without modification, which has little difficulty and low cost

(7) Instrument display function: it can display water level, section average velocity, section instantaneous flow, cumulative flow, etc. at the same time

(8) It has the function of permanent data saving, which can save the set parameters and flow values in the case of long-term power failure

(9) The instrument has 485 interface of standard MODBUS (RTU) output and dual analog input interface


converter	Accuracy	Water level ± 2mm;Flow rate ± 1.0%;System ≤± 2.5%
	measuring range	Flow rate: 0.01-10m/s
	Power supply	12 / 24 / 220V / solar power supply (multiple power supply modes are optional)
	Communication mode	RS485 MODBUS (RTU) protocol
	Degree of protection	IP68
	Cumulative flow display Maximum	9999999999
	Instantaneous flow display Maximum	10000
	Flow rate display maximum	19.999
	Maximum value of liquid level display	19.999
	power waste	<5W
	Velocity sensor	Principle of Faraday's law of electromagnetic induction (see model and specification for dimensions, which can be customized)
	Liquid level sensor	Pressure, ultrasonic, radar, magnetostriction (other optional)
	Signal cable	Standard 10m (customizable)
	Degree of protection	IP68
Options	Options	Solar power supply system, support, support embedded parts, stainless steel instrument box, battery buried box, communication module