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Non full tube flowmeter
Non full tube flowmeter, also known as acoustic Doppler point current meter, is a velocity and flow detection instrument used in rivers, open channels
Product details
Non full tube flowmeter, also known as acoustic Doppler point current meter, is a velocity and flow detection instrument used in rivers, open channels, pipelines and other working conditions. It adopts ultrasonic detection technology, with high measurement accuracy, high stability, little influence from environmental factors, no rotating parts, low maintenance frequency, and high work reliability. It is the preferred product for online and portable measurement.
1.1 Principles and Characteristics
1.1.1 principle
Doppler effect, the frequency difference between transmission and reception is related to flow velocity, the time difference between ultrasonic transmission and reception is related to liquid level, static pressure liquid level is used for special working conditions, and environmental temperature measurement is used to correct the actual propagation speed of ultrasonic waves.
1.1.2 characteristic
Industrial stainless steel and industrial plastic materials, waterproof, anti-corrosion, sturdy and durable;
Non destructive consumables, low maintenance frequency, and low usage cost;
High resolution and measurement accuracy;
● Sensor lifespanlongextend5Over years old;
Not afraid of interference from chemical reagents, liquid viscosity, and other factors;
● Touch screen operation, Chinese menu;
● 4~20mAIsolation current output;
● IsolationModbus RS485reachRS232Communication interface;
● Upper and lower limit alarm and timing function relay output;
1.2 performance index
1.2.1 Header performance
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External dimensions |
231×185×119mm |
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weight |
1.3kg |
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storage temperature |
-40℃~60℃ |
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ambient temperature |
-20℃~ 60°CAvoid direct sunlight |
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relative humidity |
5%~85%(No condensation) |
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protection grade |
IP65 |
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power supply |
220VAC±10%，50Hz |
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Analog Output |
4~20mAOutput (dissolved oxygen value or saturation, adjustable)20mAcorrespondingmeasure）Maximum circuit load750Ohm; Optional temperature4~20mAOutput.(Optional) |
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Relay |
2A relay, capacity220 VAC/ 5A, output can be setFor alarm or timing functions（Optional) |
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local display |
Equipped with backlight5cunTouch Screen |
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Digital Interface |
RS232 reachRS485interface，Modbusagreement. |
1.2.2 Sensor performance
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External dimensions |
178×66×30mm |
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Flow velocity measurement indicators |
range0m/s～10m/s ; Resolution0.001m/sRepeatability≤0.002m/s |
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Accuracy of flow velocity measurement |
1%FS |
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Ultrasonic liquid level indicator |
range0~6.5m; Resolution1mm; Accuracy+-1mm |
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Pressure level indicator customizable
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range0~10m; Resolution1mmAccuracy ±0.25%FS
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temperature |
range-20℃～60℃； accuracy0.5℃ |
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response time |
less than30second |
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temperature sensor |
Scope of work:060°CResolution:0.01°C Accuracy:±0.5°CResponse time:less than30second |
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storage temperature |
-20℃~60°C |
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ambient temperature |
-20°C ~60°C |
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medium temperature |
0℃~50℃ |
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Maximum installation depth |
10rice |
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Chemical adaptability |
Methanol and ethanol are safe, avoid other organic solvents. |
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calibration |
It has been calibrated at the factory and generally does not need to be calibrated again. |
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Sensor casing |
plastics POMAnd stainless steel |
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weight |
<1kg |
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sensor cable |
standard configuration10Mi, |
Specifications and parameters are subject to change without prior notice.
1.4 application area
Natural river channels, open channels, pipelines, and other scenarios in the fields of sponge cities, river chief management, and inland river monitoring.
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