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1. Doppler flowmeter
2. Which method is better for measuring small flow in lakes and rivers
For small flow measurement in lakes and rivers, AMT-LSX-1 Doppler ultrasonic flowmeter and AMT-LX-1C radar flow based hail meter are both optional solutions, but the former has more advantages in accuracy, applicable scenarios, and installation convenience. The specific analysis is as follows:
1. Measurement principle of AMT-LSX-1 Doppler ultrasonic flowmeter: Based on the sound wave Doppler effect, the flow velocity is obtained by measuring the frequency shift of scattered sound waves by moving particles in the fluid, and the flow rate is calculated by combining pressure type water level gauge and velocity area method. Applicable scenarios: open channels, waterways, fully/partially filled open channels, etc., especially suitable for environments where it is difficult to construct standard cross-sections. Core advantages: High precision and low flow velocity measurement: using frequency domain Doppler analysis algorithm, data is stable and reliable, with low initial velocity, suitable for small flow scenarios. No head loss: No need to construct standard weirs to avoid interference with water flow conditions. Multi functional integration: Simultaneously measure average flow velocity, water jet depth, water temperature, and compensate for the influence of water temperature on sound velocity. Easy installation: No need for auxiliary engineering facilities, reducing deployment costs. Strong real-time capability: capable of measuring instantaneous and cumulative flow, meeting the needs of dynamic monitoring. Image: The ultrasonic probe emits sound waves obliquely upwards, and calculates the flow velocity throug
2. Measurement principle of AMT-LLX-1C radar flowmeter: using Doppler radar to detect surface flow velocity of water flow, combined with built-in radar water level gauge to measure water depth, and calculating flow rate through velocity area method.
. Applicable scenarios: Flow monitoring of natural rivers, channels/culverts/pipelines, especially suitable for high flow environments during flood periods. Core advantage: Non contact measurement: CW planar microstrip radar is not affected by climate, sediment, and floating objects, and is easy to maintain. Strong anti-interference ability: The antenna transmission frequency is flexible and adjustable, avoiding interference from multiple devices. Remote monitoring: It can be connected to telemetry terminals to achieve remote viewing of cloud platform traffic information. Strong environmental adaptability: anti condensation, waterproof, lightning protection design, suitable for outdoor environments. Image: The radar flowmeter detects surface flow velocity through non-contact detection and calculates flow rate based on water level data.III. Scheme Comparison and Recommendation Accuracy and Flow Rate Range: Doppler ultrasonic flowmeter has higher accuracy in low flow rate scenarios, lower initial velocity, and is suitable for small flow measurement.
. Radar flow meters are more suitable for high flow velocity or flood season environments, and surface flow velocity measurements may be affected by water flow fluctuations. Installation and maintenance: Ultrasonic flow meters require the probe to come into contact with the fluid, but installation is simple and does not require a standard cross-section. The
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