Portable ultrasonic flowmeter

The installation process of the portable ultrasonic flowmeter is extremely simple and easier to operate. Especially suitable for flow balance testing and flow monitoring: drinking water, river water, sea water, cooling water, hot water, industrial sewage, lubricating oil, diesel, fuel oil, chemical liquids, etc.　　 Portable ultrasonic flowmeter is an instrument that measures the flow of liquid by inspecting the effect of the ultrasonic beam on the flow of liquid. It is a contact type instrument that can measure the flow of large pipe diameters and can also be used to measure media that are not easy to contact and observe. And its measurement accuracy is very high, almost free from the interference of various parameters of the measured medium. Principle of portable ultrasonic flowmeter: According to the principle of signal detection, ultrasonic flowmeter can be divided into propagation velocity difference method (direct time difference method, time difference method, phase difference method and frequency difference method), beam shift method, Doppler method , Cross-correlation method, spatial filtering method and noise method, etc.　　 Time difference method: Measure the time difference caused by the different propagation speeds during forward and backward propagation to calculate the measured fluid velocity.　　Phase difference method: Measure the calculation speed of the phase difference caused by the time difference when propagating forward and backward.　　Frequency difference method: measure the sound loop frequency difference when propagating forward and backward.　　The steps to install the sensor of the portable ultrasonic flowmeter: 　　Choose a position with enough straight pipe length, preferably a new pipe, no rust, and easy to operate.　　Remove debris and rust on the pipeline, it is best to use an angle grinder to remove the rust.　　 Apply enough couplant (such as butter, petrolatum, etc.) on the emitting surface of the sensor. The purpose of applying the couplant is to remove the air between the emitting surface of the sensor and the outer surface of the pipe.　　Special reminder: Avoid sand and debris from entering the middle.　　 There may be some air bubbles remaining on the upper part of the inner wall of the pipe in the horizontal direction. When installing on such a pipe, it should be installed on a surface that is perpendicular to the side of the pipe.　　 Common causes of failures and troubleshooting methods of portable ultrasonic flowmeters: 　　 1. No signal: the connection between the transducer and the host is disconnected and reconnected.　　 2. Insufficient signal strength: power pollution occurs, the position of the transducer moves, and the position of the transducer is re-adjusted.　　 3. The instantaneous and accumulated flow are inconsistent: the host fails, replace the host.　　4. The instantaneous flow rate is stable, 0 but larger than the actual value: the acoustic wedge of the transducer is faulty, replace the transducer. Kaidi is one of the earliest manufacturers of portable ultrasonic flowmeters. The core technology comes from the first-class product quality. The advantages of Kaidi ultrasonic flowmeters are long service life, high accuracy, and 1% conventional accuracy. Some special occasions and media are used. Stability can also be ensured, which is very high for the strict control requirements of each section of the production.
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