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1. Installation and use instructions for portable Doppler ultrasonic flowmeter
The installation and use of portable Doppler ultrasonic flowmeter need to be combined with equipment principles, technical characteristics, and operating specifications. The specific process is as follows:
1. Equipment principles and core functions. Portable Doppler ultrasonic flowmeter works based on Doppler effect and velocity area method: Doppler effect: by measuring the frequency shift of scattered sound waves by moving particles in the fluid, the fluid flow velocity is calculated.
. Velocity area method: combining flow velocity with cross-sectional area (water level) to calculate flow rate, suitable for full and non full pipe environments, and can freely set the water level cross-sectional relationship coefficient. Technical parameters: Flow rate range: 0.02-5m/s, resolution 1mm/s. Response time: Real time refresh of measurement results. Storage space: 16MB, capable of storing over 100000 pieces of data. Battery life: Equipped with a built-in lithium battery, it can work continuously for over 12 hours. Display: The LCD screen displays real-time flow rate, flow rate, water level, and water temperature.2. Installation steps and precautions 1 Probe installation fixed probe: Fix the probe to the bracket, hold the stainless steel measuring rod, and insert the probe into the water body. Direction and position: The probe is facing the direction of water flow, ensuring that the water flow in the measurement area is uniform and stable. There are no obstacles (such as stones, sediments, garbage, etc.) in front of the probe to avoid interference. Water depth requirement: The integrated pressure water level sensor can dire
III. Operation Process and Parameter Setting 1 Enter the main menu and click the "Return" button to enter the main menu interface.
2. Select the "Flow Meter Collection Settings" option for flow meter collection settings. Flow preset mode 1 setting: Weir type: Select according to the on-site environment (such as rectangular weir, triangular weir, etc.). Width and Height: Enter the cross-sectional dimensions of the measured watershed in meters. Water level relationship: freely set the water level section coefficient to adapt to irregular sections
3. After the measurement and data recording settings are completed, the equipment automatically starts measuring and displays real-time data such as flow rate, flow rate, water level, etc. The data is automatically stored in the internal storage space and can be exported and analyzed through data receiving software.
4. Application scenarios and advantages Applicable places: natural river channels, open channels, irrigation area channels, urban sewage pipe networks, river sewage outlets, etc. In situations where handheld water flow measurement or bridge flow measurement is required. Advantages: Alternative to conventional equipment: Compared to rotary propeller flow rate combustion limb excavators, it has a lower s