Clamp on doppler flow meter can measure the flow rate of liquids, slurries and other media containing certain solid impurities and bubbles in closed pipes. The sensor tube is installed outside and does not come into contact with the fluid. Therefore, it is not affected by pipeline dirt and blockage. There is no need to cut off the flow or break the pipe during installation and maintenance. Quick installation, easy calibration and maintenance. It is very suitable for flow measurement of waste water, sludge, mud and oil-water mixture.
Features of Clamp on Doppler Flow Meter
- Non-contact measurement, no need to break pipe or stop flow during installation.
- Measurement accuracy 0.5-2%FS.
- The pipe diameter has a wide applicable range, from DN25-DN4000
- Suitable for rigid pipes such as steel and rigid plastic pipes.
- Adaptive signal gain adjustment.
- Can resist interference from frequency converters.
- Easy to operate, just enter the inner diameter to achieve flow measurement.
- Instantaneous flow and accumulated flow pulse output and flow alarm output.
- 2-line 8-digit LCD can display instantaneous flow, accumulated flow, flow rate and other information.
Clamp on doppler flow meter technical parameters
Transmitter
| Measurement principle | Ultrasonic doppler |
| Measurable flow rate range | 0.05 – 12 m/s, bidirectional measurement |
| Repeatability | 0.20% |
| Accuracy | 0.5% – 2.0% F.S. |
| Response time | 2-60 seconds, optional |
| Measurement period | 500ms |
| Pipe diameter range | 25-4000 mm |
| Measurable fluid | Reflectors (particles or bubbles) with content exceeding 100ppm, and particle size >100 microns |
| Power supply | AC: 85-265V DC: 24V/500mA |
| Installation method | Wall-mounted |
| Protection level | IP66 |
| operating temperature | -20℃ to +60℃ |
| Housing material | fiberglass |
| Display | 2-line 8-digit LCD, 8-digit instantaneous flow, cumulative flow (resettable) |
| Units of measurement | Volume/mass/speed: liters, cubic meters, kilograms, meters, gallons, etc.; flow time unit: seconds, minutes, hours, days; cumulative flow rate: E-2 ~ E+6 |
| Communication output | 4~20mA, totalizer pulse output, instantaneous flow alarm, error alarm and power interruption alarm |
| Press button | 6 buttons |
| Dimensions | 244*196*144mm |
| Weight | 2.4kg |
Sensor
| Protection level | Standard IP65, IP67, IP68 optional |
| Measurable fluid temperature | Standard sensor: -35℃~80℃, the temperature can be measured up to 120℃ in a short time |
| High temperature sensor: -35℃~200℃, the temperature can be measured up to 250℃ in a short time | |
| Testable pipeline | S type (25-4000 mm) |
| Sensor size | 60(h)*34(w)*33(d)mm |
| Sensor material | Aluminum alloy (standard temperature sensor), high temperature sensor (Peek) |
| Cable length | Standard 10m, other lengths can be customized |
Applications:
Clamp on doppler flow meters are mainly used in urban sewage treatment plants and drainage pumping stations. Environmental testing and mining, oil fields, metallurgy, chemical industry, oil refining, papermaking, food and other industries. Flow measurement of urban drainage, industrial wastewater, domestic sewage, mud, pulp, oil-water mixture, etc.
Suitable for rigid pipes such as steel and rigid plastic pipes. Liquids containing suspended solid particles or bubbles in tubes of various diameters and wall thicknesses can be measured.
What is the difference between ultrasonic and Doppler flow meter?
Traditional Ultrasonic Flowmeter
Working principle:
Traditional ultrasonic flowmeters use the Time of Flight principle. It calculates flow velocity and flow rate by emitting ultrasonic waves in the fluid and measuring the time it takes for the ultrasonic waves to travel through the fluid.
Measurement methods:
Traditional ultrasonic flow meters are usually divided into two types: single channel and dual channel. Single-channel ultrasonic flow meters measure through an ultrasonic sensor and are suitable for smaller flow ranges. Dual-channel ultrasonic flowmeter uses multiple ultrasonic sensors to achieve a wider range of flow measurement.
Features:
Traditional ultrasonic flow meters are non-invasive, highly accurate, and require no maintenance.
However, in liquid flows, traditional ultrasonic flow meters are sensitive to the presence of air bubbles and particulate matter. May affect the accuracy of measurement results.
Ultrasonic Doppler Flow Meter
Working principle:
Doppler ultrasonic flowmeter uses the principle of Doppler effect to measure flow rate and flow rate. It calculates flow velocity and flow rate by measuring changes in the frequency of ultrasonic waves scattered in the liquid.
Measurement methods:
ultrasonic Doppler Flow meters usually require at least two ultrasonic sensors. One emits ultrasonic waves and the other receives scattered echoes. By comparing the sent frequency with the received frequency, the flow rate and volume can be calculated.
Features:
Doppler ultrasonic flow meters are relatively insensitive to bubbles and impurities in liquids. Suitable for measuring fluids containing gas or particulate matter. However, the accuracy of ultrasonic Doppler flow meters may be affected by the velocity distribution of the liquid and interference from scattered echoes.
More Flow Measurement Solutions
- Ultrasonic Flow Meter Technology
- Ultrasonic Clamp on Flow Meter for Quick & Easy Measurements
- Ultrasonic, Mass and Porous Orifice Flowmeter
- Volumetric Flow Meters: Comprehensive Guide and Product List
- Choosing the Right Inline Water Flow Meter
- Portable Ultrasonic Flowmeters | Best Price for Easiest Measurement
- Water Flow Measurement Solution-Ultrasonic Flowmeter
Clamp-on ultrasonic Doppler flow meters are non-contact flow meters that provide effective clamp-on pipe flow measurement from outside the pipe. Its Doppler technology makes it ideal for use as a water flow meter. It is particularly suitable for difficult-to-handle liquids or liquids containing suspended solids. Such as wastewater, mud, sludge, chemicals, viscous liquids and abrasives.
The Sino-Inst non-intrusive Doppler ultrasonic flow meter fits DN25 or larger pipes. And clamps to the outside of the pipe to obtain flow measurement readings without interrupting the process. If you need to purchase a Doppler flow meter or have related technical questions, please contact our engineers!
Clamp on Doppler Flow Meter - Fixed Meter | DN25-DN4000
Clamp on doppler flow meter can measure the flow rate of liquids, slurries and other media containing certain solid impurities and bubbles in closed pipes. The sensor tube is installed outside and does not come into contact with the fluid. Therefore, it is not affected by pipeline dirt and blockage. There is no need to cut off the flow or break the pipe during installation and maintenance. Quick installation, easy calibration and maintenance. It is very suitable for flow measurement of waste water, sludge, mud and oil-water mixture.
Product SKU: Clamp on Doppler Flow Meter – Fixed Meter | DN25-DN4000
Product Brand: Sino-Inst
Product Currency: USD
Product Price: 999
Price Valid Until: 2029-09-09
Product In-Stock: PreOrder
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