Mobile ultrasonic flowmeter1

Mobile ultrasonic flow meters are portable ultrasonic flow meters, also called handheld ultrasonic flow meters. Ultrasonic flowmeter features: a unique signal digital processing technology, which makes the measurement signal of the instrument more stable, strong anti-interference ability, and more accurate measurement. No mechanical transmission parts are not easy to be damaged, maintenance-free, and long life. The circuit is more optimized, the integration is high, the power consumption is low, and the reliability is high. Intelligent standard signal output, friendly man-machine interface, multiple secondary signal output for your choice. The pipe segment type small pipe diameter measurement is economical and convenient, and the measurement accuracy is high. Generally used in petrochemicals, large-scale projects, water conservancy plants, beverage companies, etc. Principle of mobile ultrasonic flowmeter: According to the principle of signal detection, ultrasonic flowmeter can be divided into propagation speed 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.　　Mobile ultrasonic flowmeter installation method: 　　The steps to install the sensor: 　　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, petroleum jelly, 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 and troubleshooting methods of mobile 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 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 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. It can also be used for some special occasions and media. It can ensure stability, which is very high for the rigorous control requirements of each section of the production.

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