The application of ultrasonic Doppler flow meter in the cable channel flow measurement system realizes the full-automatic measurement of medium low and high flow velocity
Published on:
2019-01-28
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In the face of more than 90% of the domestic hydrological cableways, the current situation is generally low flow rate and there are many water plants. The rotor flow meter is used to test the original, but the problem can not be solved; At present, the reliable technology is to replace the current measuring probe with ultrasonic Doppler probe on the basis of the original cableway system, and add a controller. The controller can identify various control signals of the original system. After format conversion, the measurement signals can be recognized by the original system and transmitted to the machine room host through the transmission path of the original system. The functions of measurement control, signal reception, processing, display, etc. remain the same as the original.
The advantages of Doppler flow measurement are as follows:
1. High measurement accuracy, wide range, can measure weak current and strong current;
2. Sensitive sensing, high resolution, not limited by the starting flow rate;
3. Fast response speed, can measure instantaneous flow rate and average flow rate;
4. The measurement is linear and there are no K and C values of the calibration curve;
5. There are no mechanical rotating parts, and there are no problems such as sediment blockage or entanglement of water grass and sundries. It is most suitable for the measurement in the ice age where the content of suspended sediment is high, there are many floating objects such as water grass and extremely severe ice age.
Relevant solutions
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