| Model | FSD300 |
|---|---|
| Output | 4~20 mA、0~5V、RS485 |
| Power supply | DC：24V |
| Application | It is applied to the flow rate and flow measurement of rivers, lakes, reservoirs, channels, pipelines and other natural waters and artificial water systems. |
| Description | It is especially suitable for the measurement needs in harsh environments such as high content of suspended sediment, floating water plants and ice period. |
Ultrasonic Doppler flow meter is a flow rate and flow measurement instrument designed for natural waters, channels and pipelines. Adopting advanced ultrasonic Doppler technology, it can accurately detect the speed of water flow and measure the level and temperature at the same time, which is suitable for various complex environments, such as high content of suspended sediments, many floating water plants and harsh ice period occasions.
High-precision measurement: adopting the Doppler effect principle, it has high measurement precision, wide range, and can measure weak to strong currents.
Non-contact measurement: the measuring point is in front of the body, without destroying the flow field, sensitive sensing, high resolution.
Strong adaptability: no rotating parts, no fear of sediment clogging and entanglement of water plants, the probe is sturdy and durable.
Real-time response: fast response, can measure instantaneous flow rate, can also measure the average flow rate, to provide real-time data support.
Easy to install and maintain: IP68 protection level, suitable for a variety of harsh environments, easy to install, low maintenance costs.
Ultrasonic Doppler flow meter is based on the principle of Doppler effect, by transmitting ultrasonic waves and receiving the reflected sound waves back, using the frequency difference to calculate the fluid flow rate. When the solid particles or bubbles in the fluid and the ultrasonic transmitter produce relative motion, it will produce a Doppler shift, which is directly proportional to the fluid flow rate. By measuring the magnitude of the frequency shift, the flow rate can be accurately calculated, and thus the flow rate can be obtained.
| Measurement variables: | flow rate, liquid level, temperature |
| Measurement range: | Bidirectional flow but not recognize the flow direction: flow rate (010) m / s, liquid level (010) m Bidirectional flow and identify the flow direction: flow rate (-1010) m / s, liquid level (010) m |
| Temperature: | (-5～60)°C |
| Accuracy: | flow rate 1.0%±0.01m/s, liquid level 0.2%±0.01m, temperature±1℃ |
| Resolution: | flow rate 1mm/s, liquid level 1mm |
| Response time: | 10s～60s (Smoothing coefficient can be set through communication protocol) |
| Operating frequency: | 2MHz |
| Transmitting power: | 1W |
| Protection grade: | IP68 |
| Output: | 4-20 mA, 0-5 V |
| output accuracy | %0.5 F.S, output load 250Ω |
| Communication output: | RS485, communication specification MODBUS |
| Relay Output: | Dual SPDT / Dual SPDT+Dual SPST |
| Power supply: | AC: 220V, DC: 24V, power consumption ≤ 4W, over-voltage protection 36V |
| Electrical interface: | M20 * 1.5 cable plugs |
| Process conditions: | the type of waterway to be measured including pipelines, channels, natural streams, rivers; the measured medium acidity and alkalinity pH value between 6 and 8, non-corrosive to the sensor; medium temperature (0 ~ 60) ℃. |
| Environmental conditions: | ambient temperature (0 to 60)℃, storage temperature (-20 to 60)℃. |
Ultrasonic Doppler flowmeter application scene:
Ultrasonic Doppler flow meter is widely used in the flow rate and flow measurement of rivers, lakes, reservoirs, channels, pipelines and other natural waters and artificial water systems. It is especially suitable for the measurement needs in harsh environments such as high content of suspended sediment, floating water plants and ice period.
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