One, Working Principle
Full pipe Doppler ultrasonic flowmeters take advantage of the Doppler effect in physics, the flow meter operates by transmitting an ultrasonic sound from its transmitting transducer, the sound will be reflected by useful sonic reflectors suspended within the liquid and recorded by the receiving transducer. If the sonic reflectors are moving within the sound transmission path, sound waves will be reflected at a frequency shifted (Doppler frequency) from the transmitted frequency. The shift in frequency will be directly related to the speed of the moving particle or bubble. This shift in frequency is interpreted by the instrument and converted to various user defined measuring units.
Two, Characteristics
1. Excellent low velocity or flow rate measurement ability, as low as 0.05m/s;
2. A wide flow measurement range, high flow rate can reach 12m/s;
3. Adaptive signal gain regulation;
4. No matter the external clamp-on type or insertion type and can be installed online;
5. Simple operation and only need to input the inner diameter to achieve flow measurement;
6. Instantaneous and cumulative flow pulse output and flow alarm output;
7. Suitable for large diameter pipe in sewage measurement.
Three, Advantages
1. It is designed for dirty liquids, it makes up for transit time ultrasonic flow meter’s shortcomings which can’t measure dirty water .
2. Simple operation, high intelligence and fast response speed;
3. Prevent non-operation personnel to mobilize the password lock protection function;
5. The machine is simple to operate and with English lanuguage interface.
Four, Applications
Doppler flowmeter is suitable for urban sewage treatment plant, environmental protection monitoring and mining, oil field, metallurgy, chemical industry, oil refining, paper making, food and other industries. Urban drainage, industrial wastewater, domestic sewage, mud, pulp, oil and water mixture flow measurement. Suitable for steel, hard plastic pipe and other hard pipe, can be a variety of pipe diameter and wall thickness and pipe containing suspended solid particles or bubbles of fluid measurement.
The typical applications as below .
1. Containing particles, suspended media
2. Sewage water treatment and raw sewage
3. Cool the circulating water and ground water
4. Activated sludge
5. Mud
6. Pulp and paper slurry
7. Mineral processing liquid
8. Water-bearing crude oil
Post time: Dec-29-2022