External clamp flowmeter | Installation distance of external clamp ultrasonic flowmeter

『External clamp flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

How much do you know about the principle and installation requirements of the external clamp ultrasonic flowmeter?

The principle of external clamp type ultrasonic flowmeter: External clamp type ultrasonic flowmeter measures the flow velocity and flow rate of fluid by emitting ultrasonic pulses and receiving echoes.. Its working principle is mainly based on the Doppler effect and the principle of sound velocity propagation: Doppler effect: when an ultrasonic pulse passes through a fluid, if there are moving particles or bubbles in the fluid, the frequency of the ultrasonic wave will change, and this change is called Doppler frequency shift. By measuring the Doppler shift, the velocity and flow rate of the fluid can be calculated. The principle of sound velocity propagation: The transmitter sends ultrasonic pulses into the fluid inside the pipeline, and the receiver receives the ultrasonic pulses reflected back from the fluid. Based on the time difference and intensity of the reflected ultrasonic and acoustic pulses, the velocity and flow rate of the fluid can be determined by calling the pulse. The installation of external clamp ultrasonic flowmeter requires that the pipeline be prepared before installation, and the surface of the pipeline should be smooth, clean and tidy, without impurities or corrosive substances. Select appropriate fixtures and seals based on the material and size of the pipeline. The selection of installation pipe sections should avoid interference and eddy currents, which have a significant impact on measurement accuracy. Avoid installing in areas with strong magnetic fields and vibration interference such as water pumps, high-power radios, and frequency converters. The selection of

pipes should be uniform, dense, and easy to transmit ultrasonic waves. To have a sufficiently long straight pipe section, the upstream straight pipe section of the installation point must be greater than 10D (D is the pipe diameter), and the downstream must be greater than 5D. The upstream of the installation point should be 30D away from the water pump. The fluid should fill the pipeline. There should be sufficient space around the pipeline for on-site personnel to operate with ease. The installation methods for external clamp sensors (i.e. two probes) mainly include V-shaped installation and Z-shaped installation, depending on the diameter of the pipeline and the site conditions. During installation, it should be ensured that the contact between the sensor and the pipeline is tight to ensure that the sensor can accurately receive ultrasonic signals. The use of coupling agents during installation requires the use of specialized coupling agents (such as room temperature cured silicone rubber or high-temperature long-chain polymer grease) to ensure good coupling between the sensor and the pipeline. The coupling agent should fill the gap between the sensor working surface and the pipe wall, without any air or solid particles. After the signal debugging installation is completed, signal debugging is required to ensure the accuracy of the measurement results. During the debugging process, the signal strength and stability of the sensor should be checked and adjusted as needed. Before use, some parameters need to be set according to the actual situation, such as pipeline size, fluid type, temperature, etc. These parameters can be set through a display or data acquisition system. Calibration is necessary after initial use or r

External clamp flowmeter | Installation distance of external clamp ultrasonic flowmeter

How much do you know about the principle and installation requirements of the external clamp ultrasonic flowmeter?

『SILVER Official Website SERVICE』